{"title":"Adcom","description":"\u003cp data-start=\"243\" data-end=\"552\"\u003eDiscover premium Adcom audio equipment in Toronto, Canada at Vinyl Sound. As Toronto’s authorized dealer for Adcom, Vinyl Sound offers a trusted selection of authentic Adcom amplifiers, preamps, and high-fidelity audio components designed for audiophiles who demand powerful, clean, and precise sound.\u003c\/p\u003e\n\u003cp data-start=\"554\" data-end=\"910\"\u003eAdcom has built a strong reputation in the hi-fi industry for delivering high-performance audio gear that combines exceptional sound quality, durability, and value. Whether you are upgrading your home stereo system or building a dedicated listening setup, Adcom components provide the clarity, depth, and power needed for an immersive audio experience.\u003c\/p\u003e\n\u003cp data-start=\"912\" data-end=\"1208\"\u003eAt Vinyl Sound Toronto, we specialize in high-end audio systems, hi-fi amplifiers, stereo equipment, and audiophile-grade components. Our curated Adcom collection is carefully selected to meet the needs of both experienced audiophiles and those starting their journey into high-quality sound.\u003c\/p\u003e\n\u003cp data-start=\"1210\" data-end=\"1461\"\u003eShop Adcom in Canada with confidence through Vinyl Sound, your reliable source for authentic Adcom audio equipment, expert advice, and premium customer support. Visit our Toronto showroom or order online for fast and secure delivery across Canada.\u003c\/p\u003e\n\u003cp data-start=\"1463\" data-end=\"1573\"\u003eUpgrade your sound system today with Adcom — where performance, precision, and audio excellence come together.\u003c\/p\u003e","products":[{"product_id":"adcom-gfa-6002-stereo-power-amplifier","title":"Adcom GFA-6002 Stereo Power Amplifier","description":"\u003ch2 bis_size='{\"x\":12,\"y\":9,\"w\":560,\"h\":58,\"abs_x\":12,\"abs_y\":9}'\u003eAdcom GFA-6002 Stereo Power Amplifier at Vinyl Sound Toronto Canada\u003c\/h2\u003e\n\u003cp bis_size='{\"x\":12,\"y\":78,\"w\":560,\"h\":117,\"abs_x\":12,\"abs_y\":78}'\u003eThe Adcom GFA-6002 is a high-current two-channel power amplifier engineered for clean, dynamic power delivery and stable speaker control across a wide range of loads. Delivering 70 watts per channel into 8 ohms and 100 watts per channel into 4 ohms, with a damping factor greater than 400 and an ultra-wide power bandwidth of 5Hz to 130kHz, it offers the grip and precision that reveals the full potential of any loudspeaker system. Available at Vinyl Sound in Toronto, Canada.\u003c\/p\u003e\n\u003cp bis_size='{\"x\":12,\"y\":212,\"w\":560,\"h\":228,\"abs_x\":12,\"abs_y\":212}'\u003e\u003cimg alt=\"Adcom GFA-6002 Stereo Power Amplifier — Vinyl Sound Toronto Canada\" src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfp-6002-slide11.jpg\" bis_size='{\"x\":12,\"y\":212,\"w\":560,\"h\":224,\"abs_x\":12,\"abs_y\":212}'\u003e\u003c\/p\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":457,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":457}'\u003eToroidal Transformer Design and Precision Engineering\u003c\/h2\u003e\n\u003cp bis_size='{\"x\":12,\"y\":497,\"w\":560,\"h\":137,\"abs_x\":12,\"abs_y\":497}'\u003eThe GFA-6002 is part of Adcom's GFA-600x series, built around a toroidal transformer design chosen for exceptional efficiency, minimal excess noise, and low leakage inductance compared to conventional EI-core transformer designs. Dual pairs of output transistors per channel, FR4 fiberglass circuit boards, and ultra-efficient heat sinks complete an engineering package that prioritizes reliability and consistent performance under sustained high-current demand. Lower total harmonic distortion across the operating range ensures a clean, pure signal path with a supremely quiet noise floor.\u003c\/p\u003e\n\u003cp bis_size='{\"x\":12,\"y\":650,\"w\":560,\"h\":228,\"abs_x\":12,\"abs_y\":650}'\u003e\u003cimg alt=\"Adcom GFA-6002 toroidal transformer and internal design — Vinyl Sound Toronto Canada\" src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfp-6002-slide4.jpg\" bis_size='{\"x\":12,\"y\":650,\"w\":560,\"h\":224,\"abs_x\":12,\"abs_y\":650}'\u003e\u003c\/p\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":894,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":894}'\u003ePerformance and Speaker Control\u003c\/h2\u003e\n\u003cp bis_size='{\"x\":12,\"y\":934,\"w\":560,\"h\":117,\"abs_x\":12,\"abs_y\":934}'\u003eThe GFA-6002 is capable of driving a wide variety of loudspeakers with confidence and control. Its high-current output stage maintains composure and detail during demanding passages, with bass that is tight and controlled, a midrange that remains open and natural, and high frequencies that extend smoothly without losing definition. The damping factor of greater than 400 ensures precise woofer cone control for accurate, well-defined bass across all speaker types.\u003c\/p\u003e\n\u003cp bis_size='{\"x\":12,\"y\":1068,\"w\":560,\"h\":457,\"abs_x\":12,\"abs_y\":1068}'\u003e\u003cimg alt=\"Adcom GFA-6002 front panel — Vinyl Sound Toronto Canada\" src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfp-6002-slide1.jpg\" bis_size='{\"x\":12,\"y\":1068,\"w\":560,\"h\":224,\"abs_x\":12,\"abs_y\":1068}'\u003e \u003cimg alt=\"Adcom GFA-6002 power amplifier detail — Vinyl Sound Toronto Canada\" src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfp-6002-slide6.jpg\" bis_size='{\"x\":12,\"y\":1296,\"w\":560,\"h\":224,\"abs_x\":12,\"abs_y\":1296}'\u003e\u003c\/p\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":1541,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":1541}'\u003eKey Features\u003c\/h2\u003e\n\u003cul bis_size='{\"x\":12,\"y\":1584,\"w\":560,\"h\":254,\"abs_x\":12,\"abs_y\":1584}'\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1584,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1584}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1584,\"w\":407,\"h\":19,\"abs_x\":52,\"abs_y\":1584}'\u003e70W per channel into 8 ohms \/ 100W per channel into 4 ohms\u003c\/strong\u003e for confident, dynamic power delivery\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1624,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1624}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1624,\"w\":255,\"h\":19,\"abs_x\":52,\"abs_y\":1624}'\u003eBridgeable to 175W mono into 8 ohms\u003c\/strong\u003e for single-channel or subwoofer applications\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1663,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1663}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1663,\"w\":183,\"h\":19,\"abs_x\":52,\"abs_y\":1663}'\u003eToroidal transformer design\u003c\/strong\u003e for exceptional efficiency, low noise, and minimal leakage inductance\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1702,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1702}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1702,\"w\":286,\"h\":19,\"abs_x\":52,\"abs_y\":1702}'\u003eDual pairs of output transistors per channel\u003c\/strong\u003e on FR4 fiberglass circuit boards with ultra-efficient heat sinks\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1741,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1741}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1741,\"w\":216,\"h\":19,\"abs_x\":52,\"abs_y\":1741}'\u003eDamping factor greater than 400\u003c\/strong\u003e (20Hz to 20kHz) for tight, controlled bass reproduction\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1780,\"w\":520,\"h\":19,\"abs_x\":52,\"abs_y\":1780}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1780,\"w\":189,\"h\":19,\"abs_x\":52,\"abs_y\":1780}'\u003eUltra-wide power bandwidth\u003c\/strong\u003e from 5Hz to 130kHz (-3dB)\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1800,\"w\":520,\"h\":19,\"abs_x\":52,\"abs_y\":1800}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1800,\"w\":203,\"h\":19,\"abs_x\":52,\"abs_y\":1800}'\u003eLow THD for clean, pure sound\u003c\/strong\u003e and a supremely quiet noise floor\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1819,\"w\":520,\"h\":19,\"abs_x\":52,\"abs_y\":1819}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1819,\"w\":161,\"h\":19,\"abs_x\":52,\"abs_y\":1819}'\u003eDual voltage compatible\u003c\/strong\u003e at 120VAC and 230VAC \/ 50-60Hz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":1853,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":1853}'\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable bis_size='{\"x\":12,\"y\":1893,\"w\":560,\"h\":336,\"abs_x\":12,\"abs_y\":1893}'\u003e\n\u003cthead bis_size='{\"x\":15,\"y\":1896,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":1896}'\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":1896,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":1896}'\u003e\n\u003cth bis_size='{\"x\":15,\"y\":1896,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":1896}'\u003eSpecification\u003c\/th\u003e\n\u003cth bis_size='{\"x\":257,\"y\":1896,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":1896}'\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody bis_size='{\"x\":15,\"y\":1922,\"w\":554,\"h\":305,\"abs_x\":15,\"abs_y\":1922}'\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":1922,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":1922}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":1922,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":1922}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":1924,\"w\":219,\"h\":19,\"abs_x\":17,\"abs_y\":1924}'\u003eOutput Power — 8 Ohms (Stereo)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":1922,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":1922}'\u003e70W per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":1947,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":1947}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":1947,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":1947}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":1949,\"w\":219,\"h\":19,\"abs_x\":17,\"abs_y\":1949}'\u003eOutput Power — 4 Ohms (Stereo)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":1947,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":1947}'\u003e100W per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":1973,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":1973}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":1973,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":1973}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":1975,\"w\":211,\"h\":19,\"abs_x\":17,\"abs_y\":1975}'\u003eBridged Mono Power — 8 Ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":1973,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":1973}'\u003e175W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":1998,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":1998}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":1998,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":1998}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2000,\"w\":133,\"h\":19,\"abs_x\":17,\"abs_y\":2000}'\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":1998,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":1998}'\u003e+0 \/ -0.25dB, 10Hz to 20kHz (1W into 8 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2024,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2024}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2024,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":2024}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2026,\"w\":161,\"h\":19,\"abs_x\":17,\"abs_y\":2026}'\u003ePower Bandwidth (-3dB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2024,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":2024}'\u003e5Hz to 130kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2050,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2050}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2050,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":2050}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2052,\"w\":111,\"h\":19,\"abs_x\":17,\"abs_y\":2052}'\u003eInput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2050,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":2050}'\u003e17,000 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2075,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2075}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2075,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":2075}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2077,\"w\":107,\"h\":19,\"abs_x\":17,\"abs_y\":2077}'\u003eInput Sensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2075,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":2075}'\u003eVariable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2101,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2101}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2101,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":2101}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2103,\"w\":104,\"h\":19,\"abs_x\":17,\"abs_y\":2103}'\u003eDamping Factor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2101,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":2101}'\u003eGreater than 400 (20Hz to 20kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2126,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2126}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2126,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":2126}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2128,\"w\":90,\"h\":19,\"abs_x\":17,\"abs_y\":2128}'\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2126,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":2126}'\u003e120VAC and 230VAC \/ 50-60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2152,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2152}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2152,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":2152}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2154,\"w\":156,\"h\":19,\"abs_x\":17,\"abs_y\":2154}'\u003eDimensions (W x H x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2152,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":2152}'\u003e17\" x 5.25\" x 15.5\" (432 x 133.4 x 393.7 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2178,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2178}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2178,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":2178}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2180,\"w\":47,\"h\":19,\"abs_x\":17,\"abs_y\":2180}'\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2178,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":2178}'\u003e18 lbs. (8.2 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2203,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2203}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2203,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":2203}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2205,\"w\":110,\"h\":19,\"abs_x\":17,\"abs_y\":2205}'\u003eShipping Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2203,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":2203}'\u003e21 lbs. (9.5 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":2230,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":2230}'\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":2270,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":2270}'\u003eWhat is the Adcom GFA-6002?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":2303,\"w\":560,\"h\":117,\"abs_x\":12,\"abs_y\":2303}'\u003eThe Adcom GFA-6002 is a two-channel stereo power amplifier rated at 70 watts per channel into 8 ohms and 100 watts per channel into 4 ohms, bridgeable to 175 watts mono into 8 ohms. It uses a toroidal transformer, dual pairs of output transistors per channel, and FR4 fiberglass circuit boards, and achieves a damping factor greater than 400 with an ultra-wide power bandwidth of 5Hz to 130kHz. It is available at Vinyl Sound in Toronto, Canada.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":2437,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":2437}'\u003eWhat is the power output of the GFA-6002?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":2470,\"w\":560,\"h\":78,\"abs_x\":12,\"abs_y\":2470}'\u003eThe GFA-6002 delivers 70 watts per channel into 8 ohms and 100 watts per channel into 4 ohms in stereo mode. In bridged mono mode it delivers 175 watts into 8 ohms, providing additional headroom for single-channel applications such as a passive subwoofer or a dedicated center channel in a high-performance home theater system.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":2565,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":2565}'\u003eCan the GFA-6002 be bridged to mono?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":2598,\"w\":560,\"h\":78,\"abs_x\":12,\"abs_y\":2598}'\u003eYes. The GFA-6002 can be bridged to deliver 175 watts mono into 8 ohms. This is useful when driving a single high-power loudspeaker, a passive subwoofer, or any application where the full output of both channels is required in a single output. A minimum speaker impedance of 8 ohms is recommended when operating in bridged mono mode.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":2692,\"w\":560,\"h\":45,\"abs_x\":12,\"abs_y\":2692}'\u003eWhat is the toroidal transformer and why does Adcom use it in the GFA-6002?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":2749,\"w\":560,\"h\":97,\"abs_x\":12,\"abs_y\":2749}'\u003eThe toroidal transformer in the GFA-6002 is a ring-shaped transformer geometry chosen for its high efficiency, minimal electromagnetic leakage inductance, and low radiated noise compared to conventional EI-core transformer designs. These characteristics reduce interference with the sensitive audio signal circuits in the amplifier, resulting in a quieter noise floor and more stable voltage regulation under varying power demands.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":2863,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":2863}'\u003eWhat speaker loads can the GFA-6002 drive?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":2896,\"w\":560,\"h\":117,\"abs_x\":12,\"abs_y\":2896}'\u003eThe GFA-6002 is designed to drive a wide variety of loudspeakers in stereo mode, including 4-ohm designs, with its rated output of 100 watts per channel. Its damping factor greater than 400 ensures precise control of loudspeaker cone movement, particularly important for accurate bass reproduction with ported and bass-reflex speaker enclosures. The variable input sensitivity allows the GFA-6002 to be matched to a wide range of preamplifiers and source components.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3030,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":3030}'\u003eHow does the GFA-6002 fit into the Adcom amplifier lineup?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3063,\"w\":560,\"h\":137,\"abs_x\":12,\"abs_y\":3063}'\u003eThe GFA-6002 is Adcom's entry-level two-channel power amplifier in the GFA-600x series, positioned below the higher-powered GFA-565se, GFA-575se, and GFA-585se models. It shares the same core design philosophy of high-current output, low distortion, and reliable build quality, while offering a more compact footprint and lower power output suited to smaller rooms and moderately sensitive loudspeakers. For systems requiring more output power or the ability to drive very low impedance loads, the GFA-565se and above offer higher specifications.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3216,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":3216}'\u003eWhere can I buy the Adcom GFA-6002 in Canada?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3250,\"w\":560,\"h\":58,\"abs_x\":12,\"abs_y\":3250}'\u003eThe Adcom GFA-6002 is available at Vinyl Sound, an authorized Adcom dealer in Toronto, Canada. Browse the full \u003ca href=\"\/collections\/power-amplifier\" bis_size='{\"x\":160,\"y\":3269,\"w\":160,\"h\":19,\"abs_x\":160,\"abs_y\":3269}'\u003epower amplifier collection\u003c\/a\u003e at Vinyl Sound or contact our team for system matching advice and in-store demonstrations.\u003c\/p\u003e","brand":"Adcom","offers":[{"title":"Default Title","offer_id":48918894969084,"sku":"GFA-6002","price":999.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0116\/1773\/0617\/files\/AdcomGFA-6002StereoPowerAmplifier.png?v=1775233717"},{"product_id":"adcom-gia-275-integrated-amplifier","title":"Adcom GIA-275 Integrated Amplifier","description":"\u003ch2 bis_size='{\"x\":12,\"y\":9,\"w\":560,\"h\":58,\"abs_x\":12,\"abs_y\":9}'\u003eAdcom GIA-275 Integrated Amplifier at Vinyl Sound Toronto Canada\u003c\/h2\u003e\n\u003cp bis_size='{\"x\":12,\"y\":78,\"w\":560,\"h\":117,\"abs_x\":12,\"abs_y\":78}'\u003eThe Adcom GIA-275 is a compact integrated amplifier designed for modern systems, combining power amplification, preamplification, a built-in Wolfson WM8740 DAC, Bluetooth aptX, and USB audio in a single, understated unit. Delivering 80 watts per channel into 8 ohms and 120 watts into 4 ohms, it connects seamlessly to analog sources, digital sources, flat-screen TVs, and Bluetooth-enabled devices. Available at Vinyl Sound in Toronto, Canada.\u003c\/p\u003e\n\u003cp bis_size='{\"x\":12,\"y\":212,\"w\":560,\"h\":228,\"abs_x\":12,\"abs_y\":212}'\u003e\u003cimg alt=\"Adcom GIA-275 Integrated Amplifier — Vinyl Sound Toronto Canada\" src=\"https:\/\/adcom.com\/wp-content\/uploads\/gia-275-slide4.jpg\" bis_size='{\"x\":12,\"y\":212,\"w\":560,\"h\":224,\"abs_x\":12,\"abs_y\":212}'\u003e\u003c\/p\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":457,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":457}'\u003eWolfson DAC and High-Resolution Digital Audio\u003c\/h2\u003e\n\u003cp bis_size='{\"x\":12,\"y\":497,\"w\":560,\"h\":137,\"abs_x\":12,\"abs_y\":497}'\u003eAt the core of the GIA-275's digital performance is a Wolfson WM8740 DAC, capable of converting digital recordings at up to 24-bit \/ 192kHz resolution. USB Audio 2.0 support enables direct connection to Windows (XP, Vista, 7, 8) and Apple Mac computers, with driver software provided for Windows 32-bit and 64-bit systems. The firmware is field-upgradeable via mini USB, ensuring the GIA-275 can be updated as audio standards evolve. Two digital coaxial and two digital optical inputs allow connection to CD transports, flat-screen TVs, and other digital sources with no signal compromise.\u003c\/p\u003e\n\u003cp bis_size='{\"x\":12,\"y\":650,\"w\":560,\"h\":228,\"abs_x\":12,\"abs_y\":650}'\u003e\u003cimg alt=\"Adcom GIA-275 DAC and digital inputs — Vinyl Sound Toronto Canada\" src=\"https:\/\/adcom.com\/wp-content\/uploads\/gia-275-slide5.jpg\" bis_size='{\"x\":12,\"y\":650,\"w\":560,\"h\":224,\"abs_x\":12,\"abs_y\":650}'\u003e\u003c\/p\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":894,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":894}'\u003eBluetooth and Analog Connectivity\u003c\/h2\u003e\n\u003cp bis_size='{\"x\":12,\"y\":934,\"w\":560,\"h\":137,\"abs_x\":12,\"abs_y\":934}'\u003eBluetooth v4.0 with aptX and an external antenna enables CD-quality wireless streaming from smartphones, tablets, and laptops with minimal setup. For traditional analog sources, two AUX inputs accommodate CD players, turntables with external phono stages, and other line-level components. Digital coaxial and optical outputs allow the GIA-275 to serve as a digital hub, passing signals to external DACs or recording devices. The result is a single component capable of replacing a preamplifier, DAC, Bluetooth receiver, and power amplifier in a compact, straightforward package.\u003c\/p\u003e\n\u003cp bis_size='{\"x\":12,\"y\":1087,\"w\":560,\"h\":457,\"abs_x\":12,\"abs_y\":1087}'\u003e\u003cimg alt=\"Adcom GIA-275 rear panel connectivity — Vinyl Sound Toronto Canada\" src=\"https:\/\/adcom.com\/wp-content\/uploads\/gia-275-slide1.jpg\" bis_size='{\"x\":12,\"y\":1087,\"w\":560,\"h\":224,\"abs_x\":12,\"abs_y\":1087}'\u003e \u003cimg alt=\"Adcom GIA-275 integrated amplifier detail — Vinyl Sound Toronto Canada\" src=\"https:\/\/adcom.com\/wp-content\/uploads\/gia-275-slide11.jpg\" bis_size='{\"x\":12,\"y\":1316,\"w\":560,\"h\":224,\"abs_x\":12,\"abs_y\":1316}'\u003e\u003c\/p\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":1561,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":1561}'\u003eKey Features\u003c\/h2\u003e\n\u003cul bis_size='{\"x\":12,\"y\":1604,\"w\":560,\"h\":293,\"abs_x\":12,\"abs_y\":1604}'\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1604,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1604}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1604,\"w\":407,\"h\":19,\"abs_x\":52,\"abs_y\":1604}'\u003e80W per channel into 8 ohms \/ 120W per channel into 4 ohms\u003c\/strong\u003e for confident control and dynamic headroom\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1643,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1643}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1643,\"w\":202,\"h\":19,\"abs_x\":52,\"abs_y\":1643}'\u003eBuilt-in Wolfson WM8740 DAC\u003c\/strong\u003e for high-quality digital-to-analog conversion up to 24-bit \/ 192kHz\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1682,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1682}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1682,\"w\":164,\"h\":19,\"abs_x\":52,\"abs_y\":1682}'\u003eBluetooth v4.0 with aptX\u003c\/strong\u003e for CD-quality wireless streaming, with external antenna for robust connection\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1722,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1722}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1722,\"w\":94,\"h\":19,\"abs_x\":52,\"abs_y\":1722}'\u003eUSB Audio 2.0\u003c\/strong\u003e compatible with Windows XP\/Vista\/7\/8 and Apple Mac; firmware upgradeable via mini USB\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1761,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1761}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1761,\"w\":390,\"h\":19,\"abs_x\":52,\"abs_y\":1761}'\u003e2x Digital Coaxial and 2x Digital Optical inputs and outputs\u003c\/strong\u003e for flexible digital system integration\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1800,\"w\":520,\"h\":19,\"abs_x\":52,\"abs_y\":1800}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1800,\"w\":123,\"h\":19,\"abs_x\":52,\"abs_y\":1800}'\u003eDual analog inputs\u003c\/strong\u003e (AUX 1 and AUX 2) for CD players and other line-level sources\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1819,\"w\":520,\"h\":19,\"abs_x\":52,\"abs_y\":1819}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1819,\"w\":205,\"h\":19,\"abs_x\":52,\"abs_y\":1819}'\u003eStandby power under 0.5 watts\u003c\/strong\u003e for energy efficiency\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1839,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1839}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1839,\"w\":122,\"h\":19,\"abs_x\":52,\"abs_y\":1839}'\u003eCompact footprint\u003c\/strong\u003e suited to smaller spaces, secondary systems, and minimalist setups\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1878,\"w\":520,\"h\":19,\"abs_x\":52,\"abs_y\":1878}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1878,\"w\":161,\"h\":19,\"abs_x\":52,\"abs_y\":1878}'\u003eDual voltage compatible\u003c\/strong\u003e at 120VAC and 230VAC \/ 50-60Hz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":1912,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":1912}'\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable bis_size='{\"x\":12,\"y\":1952,\"w\":560,\"h\":523,\"abs_x\":12,\"abs_y\":1952}'\u003e\n\u003cthead bis_size='{\"x\":15,\"y\":1955,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":1955}'\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":1955,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":1955}'\u003e\n\u003cth bis_size='{\"x\":15,\"y\":1955,\"w\":196,\"h\":23,\"abs_x\":15,\"abs_y\":1955}'\u003eSpecification\u003c\/th\u003e\n\u003cth bis_size='{\"x\":213,\"y\":1955,\"w\":355,\"h\":23,\"abs_x\":213,\"abs_y\":1955}'\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody bis_size='{\"x\":15,\"y\":1980,\"w\":554,\"h\":491,\"abs_x\":15,\"abs_y\":1980}'\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":1980,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":1980}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":1980,\"w\":196,\"h\":23,\"abs_x\":15,\"abs_y\":1980}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":1982,\"w\":163,\"h\":19,\"abs_x\":17,\"abs_y\":1982}'\u003eOutput Power — 8 Ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":213,\"y\":1980,\"w\":355,\"h\":23,\"abs_x\":213,\"abs_y\":1980}'\u003e80W per channel, 20Hz–20kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2006,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2006}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2006,\"w\":196,\"h\":23,\"abs_x\":15,\"abs_y\":2006}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2008,\"w\":163,\"h\":19,\"abs_x\":17,\"abs_y\":2008}'\u003eOutput Power — 4 Ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":213,\"y\":2006,\"w\":355,\"h\":23,\"abs_x\":213,\"abs_y\":2006}'\u003e120W per channel, 20Hz–20kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2032,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2032}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2032,\"w\":196,\"h\":43,\"abs_x\":15,\"abs_y\":2032}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2034,\"w\":165,\"h\":38,\"abs_x\":17,\"abs_y\":2034}'\u003eTHD + Noise (80W into 8 ohms)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":213,\"y\":2032,\"w\":355,\"h\":43,\"abs_x\":213,\"abs_y\":2032}'\u003eLess than 0.7%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2077,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2077}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2077,\"w\":196,\"h\":43,\"abs_x\":15,\"abs_y\":2077}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2079,\"w\":173,\"h\":38,\"abs_x\":17,\"abs_y\":2079}'\u003eTHD + Noise (120W into 4 ohms)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":213,\"y\":2077,\"w\":355,\"h\":43,\"abs_x\":213,\"abs_y\":2077}'\u003eLess than 0.7%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2122,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2122}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2122,\"w\":196,\"h\":23,\"abs_x\":15,\"abs_y\":2122}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2124,\"w\":133,\"h\":19,\"abs_x\":17,\"abs_y\":2124}'\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":213,\"y\":2122,\"w\":355,\"h\":23,\"abs_x\":213,\"abs_y\":2122}'\u003e+0 \/ -0.55dB, 10Hz to 20kHz (1W into 8 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2148,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2148}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2148,\"w\":196,\"h\":23,\"abs_x\":15,\"abs_y\":2148}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2150,\"w\":62,\"h\":19,\"abs_x\":17,\"abs_y\":2150}'\u003eDAC Chip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":213,\"y\":2148,\"w\":355,\"h\":23,\"abs_x\":213,\"abs_y\":2148}'\u003eWolfson WM8740\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2173,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2173}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2173,\"w\":196,\"h\":23,\"abs_x\":15,\"abs_y\":2173}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2175,\"w\":102,\"h\":19,\"abs_x\":17,\"abs_y\":2175}'\u003eDAC Resolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":213,\"y\":2173,\"w\":355,\"h\":23,\"abs_x\":213,\"abs_y\":2173}'\u003e24-bit \/ 192kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2199,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2199}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2199,\"w\":196,\"h\":23,\"abs_x\":15,\"abs_y\":2199}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2201,\"w\":65,\"h\":19,\"abs_x\":17,\"abs_y\":2201}'\u003eBluetooth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":213,\"y\":2199,\"w\":355,\"h\":23,\"abs_x\":213,\"abs_y\":2199}'\u003ev4.0 with aptX (CD quality), external antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2224,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2224}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2224,\"w\":196,\"h\":43,\"abs_x\":15,\"abs_y\":2224}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2236,\"w\":26,\"h\":19,\"abs_x\":17,\"abs_y\":2236}'\u003eUSB\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":213,\"y\":2224,\"w\":355,\"h\":43,\"abs_x\":213,\"abs_y\":2224}'\u003eUSB Audio 2.0 — Windows XP\/Vista\/7\/8 and Apple Mac compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2270,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2270}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2270,\"w\":196,\"h\":23,\"abs_x\":15,\"abs_y\":2270}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2272,\"w\":92,\"h\":19,\"abs_x\":17,\"abs_y\":2272}'\u003eAnalog Inputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":213,\"y\":2270,\"w\":355,\"h\":23,\"abs_x\":213,\"abs_y\":2270}'\u003eAUX 1, AUX 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2295,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2295}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2295,\"w\":196,\"h\":23,\"abs_x\":15,\"abs_y\":2295}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2297,\"w\":89,\"h\":19,\"abs_x\":17,\"abs_y\":2297}'\u003eDigital Inputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":213,\"y\":2295,\"w\":355,\"h\":23,\"abs_x\":213,\"abs_y\":2295}'\u003e2x Coaxial, 2x Optical, 1x USB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2321,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2321}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2321,\"w\":196,\"h\":23,\"abs_x\":15,\"abs_y\":2321}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2323,\"w\":101,\"h\":19,\"abs_x\":17,\"abs_y\":2323}'\u003eDigital Outputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":213,\"y\":2321,\"w\":355,\"h\":23,\"abs_x\":213,\"abs_y\":2321}'\u003e2x Coaxial, 2x Optical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2346,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2346}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2346,\"w\":196,\"h\":23,\"abs_x\":15,\"abs_y\":2346}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2348,\"w\":98,\"h\":19,\"abs_x\":17,\"abs_y\":2348}'\u003eStandby Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":213,\"y\":2346,\"w\":355,\"h\":23,\"abs_x\":213,\"abs_y\":2346}'\u003eLess than 0.5 watts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2372,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2372}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2372,\"w\":196,\"h\":23,\"abs_x\":15,\"abs_y\":2372}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2374,\"w\":90,\"h\":19,\"abs_x\":17,\"abs_y\":2374}'\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":213,\"y\":2372,\"w\":355,\"h\":23,\"abs_x\":213,\"abs_y\":2372}'\u003e120VAC and 230VAC \/ 50-60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2397,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2397}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2397,\"w\":196,\"h\":23,\"abs_x\":15,\"abs_y\":2397}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2399,\"w\":156,\"h\":19,\"abs_x\":17,\"abs_y\":2399}'\u003eDimensions (W x D x H)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":213,\"y\":2397,\"w\":355,\"h\":23,\"abs_x\":213,\"abs_y\":2397}'\u003e11.8\" x 13.7\" x 7.8\" (30 x 35 x 20 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2423,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2423}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2423,\"w\":196,\"h\":23,\"abs_x\":15,\"abs_y\":2423}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2425,\"w\":47,\"h\":19,\"abs_x\":17,\"abs_y\":2425}'\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":213,\"y\":2423,\"w\":355,\"h\":23,\"abs_x\":213,\"abs_y\":2423}'\u003e6 lbs. (2.7 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2449,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2449}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2449,\"w\":196,\"h\":23,\"abs_x\":15,\"abs_y\":2449}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2451,\"w\":110,\"h\":19,\"abs_x\":17,\"abs_y\":2451}'\u003eShipping Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":213,\"y\":2449,\"w\":355,\"h\":23,\"abs_x\":213,\"abs_y\":2449}'\u003e8 lbs. (3.6 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":2475,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":2475}'\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":2515,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":2515}'\u003eWhat is the Adcom GIA-275?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":2549,\"w\":560,\"h\":97,\"abs_x\":12,\"abs_y\":2549}'\u003eThe Adcom GIA-275 is a compact integrated amplifier combining an 80-watt-per-channel stereo power amplifier, preamplifier, Wolfson WM8740 DAC, Bluetooth v4.0 with aptX, and USB Audio 2.0 in a single unit. It accepts analog, digital coaxial, digital optical, USB, and Bluetooth inputs, making it a complete audio system hub for both traditional and modern sources. It is available at Vinyl Sound in Toronto, Canada.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":2663,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":2663}'\u003eWhat is the power output of the Adcom GIA-275?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":2696,\"w\":560,\"h\":78,\"abs_x\":12,\"abs_y\":2696}'\u003eThe GIA-275 delivers 80 watts per channel into 8 ohms and 120 watts per channel into 4 ohms, both measured across the full 20Hz to 20kHz audio band. This output level provides confident dynamic headroom for a wide range of loudspeakers in small to medium-sized rooms, with sufficient reserve for transient peaks in complex musical passages.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":2790,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":2790}'\u003eWhat DAC does the GIA-275 use and what resolution does it support?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":2824,\"w\":560,\"h\":97,\"abs_x\":12,\"abs_y\":2824}'\u003eThe GIA-275 uses a Wolfson WM8740 DAC, capable of processing digital audio at up to 24-bit \/ 192kHz resolution via USB from a connected Mac or Windows computer. This allows the GIA-275 to serve as a high-resolution USB DAC for computer-based audio playback without requiring an external converter, and to accept up to 192kHz content from compatible digital sources connected via coaxial or optical inputs.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":2938,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":2938}'\u003eHow does Bluetooth work on the GIA-275?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":2971,\"w\":560,\"h\":117,\"abs_x\":12,\"abs_y\":2971}'\u003eThe GIA-275 uses Bluetooth v4.0 with aptX codec support and an external antenna. aptX delivers audio quality equivalent to CD over a wireless connection, reducing the compression artifacts associated with standard Bluetooth SBC. The external antenna improves reception range and connection stability compared to internal antenna designs. Pairing is straightforward from any Bluetooth-enabled smartphone, tablet, laptop, or other A2DP-compatible device.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3105,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":3105}'\u003eWhat digital inputs does the GIA-275 accept?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3138,\"w\":560,\"h\":97,\"abs_x\":12,\"abs_y\":3138}'\u003eThe GIA-275 accepts digital audio via two coaxial (S\/PDIF) inputs, two optical (TOSLINK) inputs, and one USB input, in addition to Bluetooth. It also provides two coaxial and two optical digital outputs, allowing the GIA-275 to route digital signals to an external DAC or recording device. All digital inputs are processed through the onboard Wolfson WM8740 DAC at up to 24-bit \/ 192kHz resolution.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3252,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":3252}'\u003eIs the GIA-275 suitable for a small or secondary system?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3286,\"w\":560,\"h\":117,\"abs_x\":12,\"abs_y\":3286}'\u003eYes. The GIA-275's compact footprint and all-in-one design make it particularly well suited to smaller rooms, desktop setups, bedroom systems, and secondary listening spaces where minimizing component count and cabling is a priority. Its 80-watt-per-channel output provides sufficient power for most bookshelf and floor-standing loudspeakers in rooms up to medium size, and its full connectivity — analog, digital, USB, and Bluetooth — eliminates the need for additional components in most modern system configurations.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3419,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":3419}'\u003eWhere can I buy the Adcom GIA-275 in Canada?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3453,\"w\":560,\"h\":58,\"abs_x\":12,\"abs_y\":3453}'\u003eThe Adcom GIA-275 is available at Vinyl Sound, an authorized Adcom dealer in Toronto, Canada. Browse the full \u003ca href=\"\/collections\/integrated-amplifier\" bis_size='{\"x\":160,\"y\":3472,\"w\":185,\"h\":19,\"abs_x\":160,\"abs_y\":3472}'\u003eintegrated amplifier collection\u003c\/a\u003e at Vinyl Sound or contact our team for system advice and in-store demonstrations.\u003c\/p\u003e","brand":"Adcom","offers":[{"title":"Default Title","offer_id":48918895657212,"sku":"GIA-275","price":1299.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0116\/1773\/0617\/files\/AdcomGIA-275IntegratedAmplifier_1.png?v=1775233720"},{"product_id":"adcom-gfp-915se-stereo-preamplifier","title":"Adcom GFP-915SE Stereo Preamplifier","description":"\u003ch2 bis_size='{\"x\":12,\"y\":9,\"w\":560,\"h\":58,\"abs_x\":12,\"abs_y\":9}'\u003eAdcom GFP-915SE Stereo Preamplifier at Vinyl Sound Toronto Canada\u003c\/h2\u003e\n\u003cp bis_size='{\"x\":12,\"y\":78,\"w\":560,\"h\":97,\"abs_x\":12,\"abs_y\":78}'\u003eThe Adcom GFP-915SE is the next evolution of Adcom's renowned preamplifier line. Building on the legacy of the original GFP-915, the SE version introduces triple amplifier output support, Bluetooth 5.4 wireless streaming, and high-resolution digital inputs — without compromising the low-noise signal purity that defines the GFP-915 lineage. Available at Vinyl Sound in Toronto, Canada.\u003c\/p\u003e\n\u003cp bis_size='{\"x\":12,\"y\":192,\"w\":560,\"h\":284,\"abs_x\":12,\"abs_y\":192}'\u003e\u003cimg alt=\"Adcom GFP-915SE Stereo Preamplifier — Vinyl Sound Toronto Canada\" src=\"https:\/\/adcom.com\/wp-content\/uploads\/GFP-915-ADCOM-01.jpg\" bis_size='{\"x\":12,\"y\":192,\"w\":560,\"h\":280,\"abs_x\":12,\"abs_y\":192}'\u003e\u003c\/p\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":493,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":493}'\u003eTriple Amplifier Output Support\u003c\/h2\u003e\n\u003cp bis_size='{\"x\":12,\"y\":533,\"w\":560,\"h\":117,\"abs_x\":12,\"abs_y\":533}'\u003eThe GFP-915SE is designed for complex, high-performance audio setups requiring simultaneous connection to multiple amplifiers. Three independent output paths — unbalanced Main 1, unbalanced Main 2, and balanced XLR — allow for multi-zone configurations, dedicated subwoofer integration, or bi-amping arrangements without additional splitters or converters. The upgraded software platform provides smooth input switching and stable operation across all analog and digital signal paths.\u003c\/p\u003e\n\u003cp bis_size='{\"x\":12,\"y\":666,\"w\":560,\"h\":284,\"abs_x\":12,\"abs_y\":666}'\u003e\u003cimg alt=\"Adcom GFP-915SE rear panel outputs — Vinyl Sound Toronto Canada\" src=\"https:\/\/adcom.com\/wp-content\/uploads\/GFP-915-ADCOM-02.jpg\" bis_size='{\"x\":12,\"y\":666,\"w\":560,\"h\":280,\"abs_x\":12,\"abs_y\":666}'\u003e\u003c\/p\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":967,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":967}'\u003eBluetooth 5.4 and High-Resolution Digital Inputs\u003c\/h2\u003e\n\u003cp bis_size='{\"x\":12,\"y\":1007,\"w\":560,\"h\":97,\"abs_x\":12,\"abs_y\":1007}'\u003eQualcomm Bluetooth 5.4 enables high-resolution wireless streaming with low latency and robust connection stability, bringing modern convenience to a high-fidelity signal chain. USB and Optical inputs support playback up to 192kHz \/ 24-bit, ensuring the GFP-915SE is fully compatible with the highest-quality digital sources available. All digital paths are managed through low-noise circuitry to preserve signal integrity from source to output.\u003c\/p\u003e\n\u003cp bis_size='{\"x\":12,\"y\":1121,\"w\":560,\"h\":284,\"abs_x\":12,\"abs_y\":1121}'\u003e\u003cimg alt=\"Adcom GFP-915SE digital inputs and Bluetooth — Vinyl Sound Toronto Canada\" src=\"https:\/\/adcom.com\/wp-content\/uploads\/GFP-915-ADCOM-03.jpg\" bis_size='{\"x\":12,\"y\":1121,\"w\":560,\"h\":280,\"abs_x\":12,\"abs_y\":1121}'\u003e\u003c\/p\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":1422,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":1422}'\u003ePhono Stage and Analog Source Integration\u003c\/h2\u003e\n\u003cp bis_size='{\"x\":12,\"y\":1462,\"w\":560,\"h\":117,\"abs_x\":12,\"abs_y\":1462}'\u003eThe GFP-915SE integrates a full MM\/MC phono stage with RIAA accuracy of ±0.25dB from 20Hz to 20kHz, making it a complete solution for vinyl playback within a high-performance system. Seven analog inputs provide comprehensive source management for CD players, streamers, tuners, and other line-level components. Every analog connection is routed through precision signal paths and shielded circuitry to minimize noise and preserve the natural character of each source.\u003c\/p\u003e\n\u003cp bis_size='{\"x\":12,\"y\":1595,\"w\":560,\"h\":284,\"abs_x\":12,\"abs_y\":1595}'\u003e\u003cimg alt=\"Adcom GFP-915SE phono stage and analog inputs — Vinyl Sound Toronto Canada\" src=\"https:\/\/adcom.com\/wp-content\/uploads\/GFP-915-ADCOM-04.jpg\" bis_size='{\"x\":12,\"y\":1595,\"w\":560,\"h\":280,\"abs_x\":12,\"abs_y\":1595}'\u003e\u003c\/p\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":1896,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":1896}'\u003eKey Features\u003c\/h2\u003e\n\u003cul bis_size='{\"x\":12,\"y\":1939,\"w\":560,\"h\":274,\"abs_x\":12,\"abs_y\":1939}'\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1939,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1939}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1939,\"w\":473,\"h\":38,\"abs_x\":52,\"abs_y\":1939}'\u003eTriple amplifier outputs: Main 1 (unbalanced), Main 2 (unbalanced), and Balanced XLR\u003c\/strong\u003e for multi-amp, bi-amp, or multi-zone configurations\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1978,\"w\":520,\"h\":19,\"abs_x\":52,\"abs_y\":1978}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1978,\"w\":140,\"h\":19,\"abs_x\":52,\"abs_y\":1978}'\u003eMM\/MC phono stage\u003c\/strong\u003e with RIAA accuracy of ±0.25dB from 20Hz to 20kHz\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1998,\"w\":520,\"h\":19,\"abs_x\":52,\"abs_y\":1998}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1998,\"w\":164,\"h\":19,\"abs_x\":52,\"abs_y\":1998}'\u003eQualcomm Bluetooth 5.4\u003c\/strong\u003e for high-resolution wireless streaming with low latency\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":2017,\"w\":520,\"h\":19,\"abs_x\":52,\"abs_y\":2017}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":2017,\"w\":197,\"h\":19,\"abs_x\":52,\"abs_y\":2017}'\u003eUSB and Optical digital inputs\u003c\/strong\u003e supporting up to 192kHz \/ 24-bit playback\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":2037,\"w\":520,\"h\":19,\"abs_x\":52,\"abs_y\":2037}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":2037,\"w\":132,\"h\":19,\"abs_x\":52,\"abs_y\":2037}'\u003eSeven analog inputs\u003c\/strong\u003e for comprehensive source management\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":2057,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":2057}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":2057,\"w\":338,\"h\":19,\"abs_x\":52,\"abs_y\":2057}'\u003eRecord output, RS232 control port, and 12V trigger\u003c\/strong\u003e for system automation and recording integration\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":2096,\"w\":520,\"h\":19,\"abs_x\":52,\"abs_y\":2096}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":2096,\"w\":92,\"h\":19,\"abs_x\":52,\"abs_y\":2096}'\u003eTone controls:\u003c\/strong\u003e ±11.5dB Bass (20Hz) and ±8.5dB Treble (20kHz)\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":2115,\"w\":520,\"h\":19,\"abs_x\":52,\"abs_y\":2115}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":2115,\"w\":153,\"h\":19,\"abs_x\":52,\"abs_y\":2115}'\u003eTHD + Noise of 0.005%\u003c\/strong\u003e at rated output (high level) for exceptionally low distortion\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":2135,\"w\":520,\"h\":19,\"abs_x\":52,\"abs_y\":2135}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":2135,\"w\":268,\"h\":19,\"abs_x\":52,\"abs_y\":2135}'\u003eSignal-to-noise ratio of 100dB or greater\u003c\/strong\u003e (high level, A-weighted)\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":2155,\"w\":520,\"h\":19,\"abs_x\":52,\"abs_y\":2155}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":2155,\"w\":232,\"h\":19,\"abs_x\":52,\"abs_y\":2155}'\u003eMaximum output level of 10.0Vrms\u003c\/strong\u003e on bypass and main outputs\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":2174,\"w\":520,\"h\":19,\"abs_x\":52,\"abs_y\":2174}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":2174,\"w\":173,\"h\":19,\"abs_x\":52,\"abs_y\":2174}'\u003eBrushed aluminum chassis\u003c\/strong\u003e with intuitive front-panel controls\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":2194,\"w\":520,\"h\":19,\"abs_x\":52,\"abs_y\":2194}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":2194,\"w\":161,\"h\":19,\"abs_x\":52,\"abs_y\":2194}'\u003eDual voltage compatible\u003c\/strong\u003e at 120VAC and 230VAC \/ 50-60Hz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":2227,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":2227}'\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable bis_size='{\"x\":12,\"y\":2267,\"w\":560,\"h\":659,\"abs_x\":12,\"abs_y\":2267}'\u003e\n\u003cthead bis_size='{\"x\":15,\"y\":2270,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2270}'\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2270,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2270}'\u003e\n\u003cth bis_size='{\"x\":15,\"y\":2270,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":2270}'\u003eSpecification\u003c\/th\u003e\n\u003cth bis_size='{\"x\":257,\"y\":2270,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":2270}'\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody bis_size='{\"x\":15,\"y\":2296,\"w\":554,\"h\":627,\"abs_x\":15,\"abs_y\":2296}'\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2296,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2296}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2296,\"w\":240,\"h\":43,\"abs_x\":15,\"abs_y\":2296}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2298,\"w\":221,\"h\":38,\"abs_x\":17,\"abs_y\":2298}'\u003eFrequency Response (±0.5dB, line volume at max)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2296,\"w\":311,\"h\":43,\"abs_x\":257,\"abs_y\":2296}'\u003e5Hz to 100kHz; High Level: 50Hz to 50kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2341,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2341}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2341,\"w\":240,\"h\":43,\"abs_x\":15,\"abs_y\":2341}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2343,\"w\":217,\"h\":38,\"abs_x\":17,\"abs_y\":2343}'\u003eTHD + Noise (20Hz–20kHz, rated output)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2341,\"w\":311,\"h\":43,\"abs_x\":257,\"abs_y\":2341}'\u003e0.005% high level \/ 0.15% MM \/ 0.03% MC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2386,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2386}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2386,\"w\":240,\"h\":43,\"abs_x\":15,\"abs_y\":2386}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2398,\"w\":232,\"h\":19,\"abs_x\":17,\"abs_y\":2398}'\u003eSignal-to-Noise Ratio (A-weighted)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2386,\"w\":311,\"h\":43,\"abs_x\":257,\"abs_y\":2386}'\u003e100dB or greater (high level); 95dB or greater (MM and MC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2431,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2431}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2431,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":2431}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2433,\"w\":107,\"h\":19,\"abs_x\":17,\"abs_y\":2433}'\u003eInput Sensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2431,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":2431}'\u003e500mV high level \/ 3.5mV MM \/ 25mV MC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2457,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2457}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2457,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":2457}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2459,\"w\":111,\"h\":19,\"abs_x\":17,\"abs_y\":2459}'\u003eInput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2457,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":2457}'\u003e11 ohms (high level, MM, and MC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2483,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2483}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2483,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":2483}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2485,\"w\":96,\"h\":19,\"abs_x\":17,\"abs_y\":2485}'\u003eRIAA Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2483,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":2483}'\u003e±0.25dB, 20Hz to 20kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2508,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2508}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2508,\"w\":240,\"h\":43,\"abs_x\":15,\"abs_y\":2508}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2520,\"w\":123,\"h\":19,\"abs_x\":17,\"abs_y\":2520}'\u003eOutput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2508,\"w\":311,\"h\":43,\"abs_x\":257,\"abs_y\":2508}'\u003e100 ohms (bypass and main outputs); 475 ohms (tape output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2553,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2553}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2553,\"w\":240,\"h\":43,\"abs_x\":15,\"abs_y\":2553}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2565,\"w\":84,\"h\":19,\"abs_x\":17,\"abs_y\":2565}'\u003eOutput Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2553,\"w\":311,\"h\":43,\"abs_x\":257,\"abs_y\":2553}'\u003e2.0Vrms (bypass and main); 1.0Vrms (record output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2599,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2599}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2599,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":2599}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2601,\"w\":155,\"h\":19,\"abs_x\":17,\"abs_y\":2601}'\u003eMaximum Output Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2599,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":2599}'\u003e10.0Vrms (bypass and main outputs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2624,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2624}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2624,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":2624}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2626,\"w\":90,\"h\":19,\"abs_x\":17,\"abs_y\":2626}'\u003eTone Controls\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2624,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":2624}'\u003e±11.5dB Bass (20Hz); ±8.5dB Treble (20kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2650,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2650}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2650,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":2650}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2652,\"w\":66,\"h\":19,\"abs_x\":17,\"abs_y\":2652}'\u003eUSB Input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2650,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":2650}'\u003eUp to 192kHz \/ 24-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2675,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2675}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2675,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":2675}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2677,\"w\":86,\"h\":19,\"abs_x\":17,\"abs_y\":2677}'\u003eOptical Input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2675,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":2675}'\u003eUp to 192kHz \/ 24-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2701,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2701}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2701,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":2701}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2703,\"w\":65,\"h\":19,\"abs_x\":17,\"abs_y\":2703}'\u003eBluetooth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2701,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":2701}'\u003eQualcomm 5.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2727,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2727}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2727,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":2727}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2729,\"w\":92,\"h\":19,\"abs_x\":17,\"abs_y\":2729}'\u003eAnalog Inputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2727,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":2727}'\u003e7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2752,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2752}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2752,\"w\":240,\"h\":43,\"abs_x\":15,\"abs_y\":2752}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2764,\"w\":53,\"h\":19,\"abs_x\":17,\"abs_y\":2764}'\u003eOutputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2752,\"w\":311,\"h\":43,\"abs_x\":257,\"abs_y\":2752}'\u003eMain 1 (unbalanced), Main 2 (unbalanced), Balanced XLR, Record output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2797,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2797}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2797,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":2797}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2799,\"w\":49,\"h\":19,\"abs_x\":17,\"abs_y\":2799}'\u003eControl\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2797,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":2797}'\u003eRS232 port, 12V trigger\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2823,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2823}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2823,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":2823}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2825,\"w\":90,\"h\":19,\"abs_x\":17,\"abs_y\":2825}'\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2823,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":2823}'\u003e120VAC to 230VAC \/ 50-60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2849,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2849}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2849,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":2849}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2851,\"w\":156,\"h\":19,\"abs_x\":17,\"abs_y\":2851}'\u003eDimensions (W x H x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2849,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":2849}'\u003e16.9\" x 4.13\" x 14.3\" (430 x 105 x 335 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2874,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2874}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2874,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":2874}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2876,\"w\":47,\"h\":19,\"abs_x\":17,\"abs_y\":2876}'\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2874,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":2874}'\u003e15.7 lbs. (7.1 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2900,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2900}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2900,\"w\":240,\"h\":23,\"abs_x\":15,\"abs_y\":2900}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2902,\"w\":110,\"h\":19,\"abs_x\":17,\"abs_y\":2902}'\u003eShipping Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":257,\"y\":2900,\"w\":311,\"h\":23,\"abs_x\":257,\"abs_y\":2900}'\u003e20 lbs. (9.05 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":2926,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":2926}'\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":2966,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":2966}'\u003eWhat is the Adcom GFP-915SE?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3000,\"w\":560,\"h\":97,\"abs_x\":12,\"abs_y\":3000}'\u003eThe Adcom GFP-915SE is a high-performance stereo preamplifier featuring triple simultaneous amplifier output support (Main 1 unbalanced, Main 2 unbalanced, and balanced XLR), an MM\/MC phono stage, Qualcomm Bluetooth 5.4, USB and Optical digital inputs up to 192kHz\/24-bit, and seven analog inputs. It is the upgraded SE version of the original GFP-915 and is available at Vinyl Sound in Toronto, Canada.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3114,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":3114}'\u003eWhat does triple amplifier output support mean on the GFP-915SE?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3147,\"w\":560,\"h\":97,\"abs_x\":12,\"abs_y\":3147}'\u003eThe GFP-915SE provides three independent output paths that can operate simultaneously: an unbalanced Main 1 output, an unbalanced Main 2 output, and a balanced XLR output. This allows the preamplifier to drive three separate power amplifiers at once — useful for bi-amping a pair of loudspeakers, adding a dedicated subwoofer amplifier, or distributing audio to multiple zones without requiring additional splitters or signal converters.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3261,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":3261}'\u003eWhat phono cartridge types does the GFP-915SE support?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3295,\"w\":560,\"h\":97,\"abs_x\":12,\"abs_y\":3295}'\u003eThe GFP-915SE includes a built-in phono stage that supports both Moving Magnet (MM) and Moving Coil (MC) cartridges. Input sensitivity is 3.5mV for MM cartridges and 25mV for MC cartridges, with RIAA equalization accuracy of ±0.25dB from 20Hz to 20kHz. Signal-to-noise ratio on the phono stage is 95dB or greater for both MM and MC, making it suitable for high-performance vinyl playback without an external phono preamplifier.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3409,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":3409}'\u003eWhat digital sources can connect to the GFP-915SE?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3442,\"w\":560,\"h\":78,\"abs_x\":12,\"abs_y\":3442}'\u003eThe GFP-915SE accepts digital audio via USB and Optical inputs, both supporting playback up to 192kHz \/ 24-bit resolution. In addition, Qualcomm Bluetooth 5.4 enables high-resolution wireless streaming from smartphones, tablets, computers, and other Bluetooth-enabled devices with low latency and stable connection quality.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3536,\"w\":560,\"h\":45,\"abs_x\":12,\"abs_y\":3536}'\u003eWhat is the difference between the GFP-915SE and the original GFP-915?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3593,\"w\":560,\"h\":117,\"abs_x\":12,\"abs_y\":3593}'\u003eThe SE version adds triple amplifier output support (Main 1, Main 2, and balanced XLR simultaneously), Qualcomm Bluetooth 5.4, high-resolution USB and Optical digital inputs, and an upgraded software platform for smoother input switching and more stable operation. These additions expand the GFP-915SE's connectivity and flexibility considerably while maintaining the low-noise analog signal path and RIAA phono accuracy of the original design.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3726,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":3726}'\u003eCan the GFP-915SE be used for bi-amping?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3760,\"w\":560,\"h\":117,\"abs_x\":12,\"abs_y\":3760}'\u003eYes. The GFP-915SE's three simultaneous output paths make it well suited for bi-amping configurations where separate power amplifiers drive the high-frequency and low-frequency sections of a compatible loudspeaker. Main 1 and Main 2 unbalanced outputs and the balanced XLR output can each be routed to a dedicated power amplifier, allowing the preamplifier to serve as the control center for a multi-amplifier system without any additional signal splitting hardware.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3893,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":3893}'\u003eWhere can I buy the Adcom GFP-915SE in Canada?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3927,\"w\":560,\"h\":58,\"abs_x\":12,\"abs_y\":3927}'\u003eThe Adcom GFP-915SE is available at Vinyl Sound, an authorized Adcom dealer in Toronto, Canada. Browse the full \u003ca href=\"\/collections\/preamplifier\" bis_size='{\"x\":160,\"y\":3946,\"w\":137,\"h\":19,\"abs_x\":160,\"abs_y\":3946}'\u003epreamplifier collection\u003c\/a\u003e at Vinyl Sound or contact our team for system configuration advice and in-store demonstrations.\u003c\/p\u003e","brand":"Adcom","offers":[{"title":"Default Title","offer_id":48918897459452,"sku":"GFP-915","price":1699.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0116\/1773\/0617\/files\/AdcomGFP-915SEStereoPreamplifier_1.png?v=1775233723"},{"product_id":"adcom-gfa-555ms-stereo-power-amplifier","title":"Adcom GFA-555ms Stereo Power Amplifier","description":"\u003ch2 bis_size='{\"x\":12,\"y\":9,\"w\":560,\"h\":58,\"abs_x\":12,\"abs_y\":9}'\u003eAdcom GFA-555ms Stereo Power Amplifier at Vinyl Sound Toronto Canada\u003c\/h2\u003e\n\u003cp bis_size='{\"x\":12,\"y\":78,\"w\":560,\"h\":117,\"abs_x\":12,\"abs_y\":78}'\u003eThe Adcom GFA-555ms is a high-current stereo power amplifier built on one of audio's most respected amplifier legacies, redesigned for greater control, lower noise, and a more transparent presentation. Designed for those who demand both authority and composure in a two-channel system, the GFA-555ms drives a broad range of loudspeakers, including those with very low impedances and highly reactive loads, at sustained high-power levels without compression or loss of detail. Available at Vinyl Sound in Toronto, Canada.\u003c\/p\u003e\n\u003cp bis_size='{\"x\":12,\"y\":212,\"w\":560,\"h\":228,\"abs_x\":12,\"abs_y\":212}'\u003e\u003cimg alt=\"Adcom GFA-555ms Stereo Power Amplifier — Vinyl Sound Toronto Canada\" src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-555ms-slide1.jpg\" bis_size='{\"x\":12,\"y\":212,\"w\":560,\"h\":224,\"abs_x\":12,\"abs_y\":212}'\u003e\u003c\/p\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":457,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":457}'\u003ePower Output and High-Current Design\u003c\/h2\u003e\n\u003cp bis_size='{\"x\":12,\"y\":497,\"w\":560,\"h\":137,\"abs_x\":12,\"abs_y\":497}'\u003eThe GFA-555ms delivers 125 watts per channel into 8 ohms and 200 watts per channel into 4 ohms, with bridged mono operation providing 400 watts into 8 ohms for high-power single-zone or subwoofer applications. Its high-current circuit topology allows the amplifier to maintain consistent output voltage and current delivery even as speaker impedance drops or the phase angle between voltage and current becomes highly reactive, a requirement for driving electrostatic, planar magnetic, and low-efficiency dynamic loudspeakers to their full potential.\u003c\/p\u003e\n\u003cp bis_size='{\"x\":12,\"y\":650,\"w\":560,\"h\":228,\"abs_x\":12,\"abs_y\":650}'\u003e\u003cimg alt=\"Adcom GFA-555ms Power Amplifier rear panel connections — Vinyl Sound Toronto Canada\" src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-555ms-slide2.jpg\" bis_size='{\"x\":12,\"y\":650,\"w\":560,\"h\":224,\"abs_x\":12,\"abs_y\":650}'\u003e\u003c\/p\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":894,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":894}'\u003eLow Distortion and Circuit Design\u003c\/h2\u003e\n\u003cp bis_size='{\"x\":12,\"y\":934,\"w\":560,\"h\":156,\"abs_x\":12,\"abs_y\":934}'\u003eSpecial attention was paid during the GFA-555ms's development to ensuring that distortion remains extremely low under all load conditions, particularly when driving reactive loads in which the phase angles of voltage and current diverge substantially. The result is a wide dynamic range with excellent grip and headroom at all listening levels, with bass that is powerful yet controlled, a midrange that is open and dimensional, and high frequencies that extend cleanly without harshness. Both unbalanced RCA and balanced XLR inputs are provided, and dual voltage compatibility at 120VAC and 230VAC allows worldwide use.\u003c\/p\u003e\n\u003cp bis_size='{\"x\":12,\"y\":1107,\"w\":560,\"h\":228,\"abs_x\":12,\"abs_y\":1107}'\u003e\u003cimg alt=\"Adcom GFA-555ms Power Amplifier internal circuit design — Vinyl Sound Toronto Canada\" src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-555ms-slide7.jpg\" bis_size='{\"x\":12,\"y\":1107,\"w\":560,\"h\":224,\"abs_x\":12,\"abs_y\":1107}'\u003e\u003c\/p\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":1352,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":1352}'\u003eKey Features\u003c\/h2\u003e\n\u003cul bis_size='{\"x\":12,\"y\":1395,\"w\":560,\"h\":235,\"abs_x\":12,\"abs_y\":1395}'\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1395,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1395}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1395,\"w\":415,\"h\":19,\"abs_x\":52,\"abs_y\":1395}'\u003e125W per channel into 8 ohms \/ 200W per channel into 4 ohms\u003c\/strong\u003e — high-current output for any speaker load\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1434,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1434}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1434,\"w\":255,\"h\":19,\"abs_x\":52,\"abs_y\":1434}'\u003eBridgeable to 400W mono into 8 ohms\u003c\/strong\u003e — for high-power single-zone or subwoofer applications\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1473,\"w\":520,\"h\":19,\"abs_x\":52,\"abs_y\":1473}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1473,\"w\":132,\"h\":19,\"abs_x\":52,\"abs_y\":1473}'\u003eHigh-current design\u003c\/strong\u003e for demanding, low-impedance, and reactive speaker loads\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1493,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1493}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1493,\"w\":189,\"h\":19,\"abs_x\":52,\"abs_y\":1493}'\u003eUltra-low distortion circuitry\u003c\/strong\u003e for greater transparency, resolution, and detail retrieval\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1532,\"w\":520,\"h\":19,\"abs_x\":52,\"abs_y\":1532}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1532,\"w\":273,\"h\":19,\"abs_x\":52,\"abs_y\":1532}'\u003eBalanced XLR and unbalanced RCA inputs\u003c\/strong\u003e for compatibility with any preamplifier\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1552,\"w\":520,\"h\":19,\"abs_x\":52,\"abs_y\":1552}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1552,\"w\":135,\"h\":19,\"abs_x\":52,\"abs_y\":1552}'\u003eWide dynamic range\u003c\/strong\u003e with excellent grip and headroom at all listening levels\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1571,\"w\":520,\"h\":19,\"abs_x\":52,\"abs_y\":1571}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1571,\"w\":161,\"h\":19,\"abs_x\":52,\"abs_y\":1571}'\u003eDual voltage compatible\u003c\/strong\u003e — 120VAC and 230VAC \/ 50-60Hz for worldwide use\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1591,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1591}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1591,\"w\":216,\"h\":19,\"abs_x\":52,\"abs_y\":1591}'\u003eDamping factor greater than 400\u003c\/strong\u003e across 20Hz to 20kHz for precise loudspeaker control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp bis_size='{\"x\":12,\"y\":1644,\"w\":560,\"h\":228,\"abs_x\":12,\"abs_y\":1644}'\u003e\u003cimg alt=\"Adcom GFA-555ms Power Amplifier front view — Vinyl Sound Toronto Canada\" src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-555ms-slide8.jpg\" bis_size='{\"x\":12,\"y\":1644,\"w\":560,\"h\":224,\"abs_x\":12,\"abs_y\":1644}'\u003e\u003c\/p\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":1889,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":1889}'\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable bis_size='{\"x\":12,\"y\":1929,\"w\":560,\"h\":543,\"abs_x\":12,\"abs_y\":1929}'\u003e\n\u003cthead bis_size='{\"x\":15,\"y\":1932,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":1932}'\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":1932,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":1932}'\u003e\n\u003cth bis_size='{\"x\":15,\"y\":1932,\"w\":237,\"h\":23,\"abs_x\":15,\"abs_y\":1932}'\u003eSpecification\u003c\/th\u003e\n\u003cth bis_size='{\"x\":254,\"y\":1932,\"w\":314,\"h\":23,\"abs_x\":254,\"abs_y\":1932}'\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody bis_size='{\"x\":15,\"y\":1957,\"w\":554,\"h\":511,\"abs_x\":15,\"abs_y\":1957}'\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":1957,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":1957}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":1957,\"w\":237,\"h\":23,\"abs_x\":15,\"abs_y\":1957}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":1959,\"w\":219,\"h\":19,\"abs_x\":17,\"abs_y\":1959}'\u003eOutput Power — 8 Ohms (Stereo)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":254,\"y\":1957,\"w\":314,\"h\":23,\"abs_x\":254,\"abs_y\":1957}'\u003e125W per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":1983,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":1983}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":1983,\"w\":237,\"h\":23,\"abs_x\":15,\"abs_y\":1983}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":1985,\"w\":219,\"h\":19,\"abs_x\":17,\"abs_y\":1985}'\u003eOutput Power — 4 Ohms (Stereo)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":254,\"y\":1983,\"w\":314,\"h\":23,\"abs_x\":254,\"abs_y\":1983}'\u003e200W per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2008,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2008}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2008,\"w\":237,\"h\":23,\"abs_x\":15,\"abs_y\":2008}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2010,\"w\":211,\"h\":19,\"abs_x\":17,\"abs_y\":2010}'\u003eBridged Mono Power — 8 Ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":254,\"y\":2008,\"w\":314,\"h\":23,\"abs_x\":254,\"abs_y\":2008}'\u003e400W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2034,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2034}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2034,\"w\":237,\"h\":23,\"abs_x\":15,\"abs_y\":2034}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2036,\"w\":133,\"h\":19,\"abs_x\":17,\"abs_y\":2036}'\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":254,\"y\":2034,\"w\":314,\"h\":23,\"abs_x\":254,\"abs_y\":2034}'\u003e10Hz to 20kHz, +0 \/ -0.25dB (1W into 8 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2060,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2060}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2060,\"w\":237,\"h\":23,\"abs_x\":15,\"abs_y\":2060}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2062,\"w\":161,\"h\":19,\"abs_x\":17,\"abs_y\":2062}'\u003ePower Bandwidth (-3dB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":254,\"y\":2060,\"w\":314,\"h\":23,\"abs_x\":254,\"abs_y\":2060}'\u003e10Hz to 100kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2085,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2085}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2085,\"w\":237,\"h\":23,\"abs_x\":15,\"abs_y\":2085}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2087,\"w\":111,\"h\":19,\"abs_x\":17,\"abs_y\":2087}'\u003eInput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":254,\"y\":2085,\"w\":314,\"h\":23,\"abs_x\":254,\"abs_y\":2085}'\u003e100,000 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2111,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2111}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2111,\"w\":237,\"h\":43,\"abs_x\":15,\"abs_y\":2111}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2123,\"w\":107,\"h\":19,\"abs_x\":17,\"abs_y\":2123}'\u003eInput Sensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":254,\"y\":2111,\"w\":314,\"h\":43,\"abs_x\":254,\"abs_y\":2111}'\u003e1.38V rms (125W into 8 ohms) \/ 123mV rms (1W into 8 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2156,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2156}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2156,\"w\":237,\"h\":23,\"abs_x\":15,\"abs_y\":2156}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2158,\"w\":104,\"h\":19,\"abs_x\":17,\"abs_y\":2158}'\u003eDamping Factor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":254,\"y\":2156,\"w\":314,\"h\":23,\"abs_x\":254,\"abs_y\":2156}'\u003eGreater than 400 (20Hz to 20kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2182,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2182}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2182,\"w\":237,\"h\":23,\"abs_x\":15,\"abs_y\":2182}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2184,\"w\":41,\"h\":19,\"abs_x\":17,\"abs_y\":2184}'\u003eInputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":254,\"y\":2182,\"w\":314,\"h\":23,\"abs_x\":254,\"abs_y\":2182}'\u003eBalanced XLR; Unbalanced RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2207,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2207}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2207,\"w\":237,\"h\":23,\"abs_x\":15,\"abs_y\":2207}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2209,\"w\":90,\"h\":19,\"abs_x\":17,\"abs_y\":2209}'\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":254,\"y\":2207,\"w\":314,\"h\":23,\"abs_x\":254,\"abs_y\":2207}'\u003e120VAC and 230VAC \/ 50-60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2233,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2233}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2233,\"w\":237,\"h\":23,\"abs_x\":15,\"abs_y\":2233}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2235,\"w\":219,\"h\":19,\"abs_x\":17,\"abs_y\":2235}'\u003ePower Consumption — Quiescent\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":254,\"y\":2233,\"w\":314,\"h\":23,\"abs_x\":254,\"abs_y\":2233}'\u003e48VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2258,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2258}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2258,\"w\":237,\"h\":43,\"abs_x\":15,\"abs_y\":2258}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2260,\"w\":223,\"h\":38,\"abs_x\":17,\"abs_y\":2260}'\u003ePower Consumption — 125W into 8 ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":254,\"y\":2258,\"w\":314,\"h\":43,\"abs_x\":254,\"abs_y\":2258}'\u003e420VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2304,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2304}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2304,\"w\":237,\"h\":43,\"abs_x\":15,\"abs_y\":2304}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2306,\"w\":223,\"h\":38,\"abs_x\":17,\"abs_y\":2306}'\u003ePower Consumption — 200W into 4 ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":254,\"y\":2304,\"w\":314,\"h\":43,\"abs_x\":254,\"abs_y\":2304}'\u003e730VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2349,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2349}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2349,\"w\":237,\"h\":43,\"abs_x\":15,\"abs_y\":2349}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2351,\"w\":193,\"h\":38,\"abs_x\":17,\"abs_y\":2351}'\u003ePower Consumption — 400W bridged\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":254,\"y\":2349,\"w\":314,\"h\":43,\"abs_x\":254,\"abs_y\":2349}'\u003e800VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2394,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2394}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2394,\"w\":237,\"h\":23,\"abs_x\":15,\"abs_y\":2394}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2396,\"w\":227,\"h\":19,\"abs_x\":17,\"abs_y\":2396}'\u003eMaximum Dimensions (H x W x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":254,\"y\":2394,\"w\":314,\"h\":23,\"abs_x\":254,\"abs_y\":2394}'\u003e6\" x 17\" x 12.5\" (152 x 432 x 318 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2419,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2419}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2419,\"w\":237,\"h\":23,\"abs_x\":15,\"abs_y\":2419}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2421,\"w\":47,\"h\":19,\"abs_x\":17,\"abs_y\":2421}'\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":254,\"y\":2419,\"w\":314,\"h\":23,\"abs_x\":254,\"abs_y\":2419}'\u003e28.6 lbs. (13 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2445,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2445}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2445,\"w\":237,\"h\":23,\"abs_x\":15,\"abs_y\":2445}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2447,\"w\":110,\"h\":19,\"abs_x\":17,\"abs_y\":2447}'\u003eShipping Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":254,\"y\":2445,\"w\":314,\"h\":23,\"abs_x\":254,\"abs_y\":2445}'\u003e33 lbs. (15 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp bis_size='{\"x\":12,\"y\":2472,\"w\":560,\"h\":228,\"abs_x\":12,\"abs_y\":2472}'\u003e\u003cimg alt=\"Adcom GFA-555ms Power Amplifier detail — Vinyl Sound Toronto Canada\" src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-555ms-slide12.jpg\" bis_size='{\"x\":12,\"y\":2472,\"w\":560,\"h\":224,\"abs_x\":12,\"abs_y\":2472}'\u003e\u003c\/p\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":2716,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":2716}'\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":2756,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":2756}'\u003eWhat is the Adcom GFA-555ms?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":2790,\"w\":560,\"h\":97,\"abs_x\":12,\"abs_y\":2790}'\u003eThe Adcom GFA-555ms is a stereo power amplifier rated at 125 watts per channel into 8 ohms and 200 watts per channel into 4 ohms, with bridged mono operation providing 400 watts into 8 ohms. It accepts both balanced XLR and unbalanced RCA inputs and is designed to drive a broad range of loudspeakers, including those with very low impedances and highly reactive loads. It is available at Vinyl Sound in Toronto, Canada.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":2904,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":2904}'\u003eWhat is the correct power output of the Adcom GFA-555ms?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":2937,\"w\":560,\"h\":97,\"abs_x\":12,\"abs_y\":2937}'\u003eThe Adcom GFA-555ms is rated at 125 watts per channel into 8 ohms and 200 watts per channel into 4 ohms in stereo operation. In bridged mono mode, the amplifier delivers 400 watts into 8 ohms. These figures are confirmed by Adcom's official technical documentation and power consumption data: the amplifier draws 420VA at 125W into 8 ohms, 730VA at 200W into 4 ohms, and 800VA in bridged 400W mode.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3051,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":3051}'\u003eCan the Adcom GFA-555ms be bridged to mono?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3085,\"w\":560,\"h\":97,\"abs_x\":12,\"abs_y\":3085}'\u003eYes. The GFA-555ms is bridgeable to mono operation, delivering 400 watts into 8 ohms in this configuration. Bridged mono operation is useful for driving a single high-power loudspeaker, powering a subwoofer, or building a biamplified system using two GFA-555ms units. Refer to the user manual for correct bridging connection procedure and input level matching.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3199,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":3199}'\u003eDoes the Adcom GFA-555ms accept balanced inputs?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3232,\"w\":560,\"h\":78,\"abs_x\":12,\"abs_y\":3232}'\u003eYes. The GFA-555ms accepts both balanced XLR and unbalanced RCA inputs, making it compatible with any preamplifier regardless of output configuration. Balanced connection is recommended in installations where cable runs are long or where the preamplifier provides lower noise through its balanced output stage.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3326,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":3326}'\u003eCan the Adcom GFA-555ms drive low-impedance or reactive speakers?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3360,\"w\":560,\"h\":117,\"abs_x\":12,\"abs_y\":3360}'\u003eYes. The GFA-555ms was specifically designed to drive loudspeakers with very low impedances and highly reactive loads, where the phase angle between voltage and current is substantially different. Its high-current output stage maintains consistent output voltage and control even as impedance drops toward 4 ohms, making it suitable for electrostatic, planar magnetic, and other demanding speaker designs that require both high current and low distortion at reactive loads.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3493,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":3493}'\u003eCan I turn the Adcom GFA-555ms off daily?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3527,\"w\":560,\"h\":97,\"abs_x\":12,\"abs_y\":3527}'\u003eYes. The GFA-555ms can be powered off and on at any frequency without harm to the amplifier. There is no mandatory warm-up period required before use, and daily power cycling is fully supported. For long-term listening sessions, allowing the amplifier to reach operating temperature before critical listening is recommended, as with most high-current amplifiers.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3641,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":3641}'\u003eWhere can I buy the Adcom GFA-555ms in Canada?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3674,\"w\":560,\"h\":58,\"abs_x\":12,\"abs_y\":3674}'\u003eThe Adcom GFA-555ms is available at Vinyl Sound, an authorized Adcom dealer in Toronto, Canada. Browse the full \u003ca href=\"\/collections\/power-amplifier\" bis_size='{\"x\":215,\"y\":3694,\"w\":160,\"h\":19,\"abs_x\":215,\"abs_y\":3694}'\u003epower amplifier collection\u003c\/a\u003e at Vinyl Sound or contact our team for system matching guidance and in-store listening appointments.\u003c\/p\u003e","brand":"Adcom","offers":[{"title":"Default Title","offer_id":48918898704636,"sku":"GFA-555ms","price":2399.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0116\/1773\/0617\/files\/AdcomGFA-555msStereoPowerAmplifier.png?v=1775233725"},{"product_id":"adcom-gfa-555se-stereo-power-amplifier","title":"Adcom GFA-555se Stereo Power Amplifier","description":"\u003ch2 bis_size='{\"x\":12,\"y\":9,\"w\":560,\"h\":58,\"abs_x\":12,\"abs_y\":9}'\u003eAdcom GFA-555se Stereo Power Amplifier at Vinyl Sound Toronto Canada\u003c\/h2\u003e\n\u003cp bis_size='{\"x\":12,\"y\":78,\"w\":560,\"h\":97,\"abs_x\":12,\"abs_y\":78}'\u003eThe Adcom GFA-555se carries forward the legacy of one of the most iconic amplifiers in hi-fi history, reengineered for greater transparency, control, and musical refinement. Producing 200 watts per channel into 8 ohms and 300 watts per channel into 4 ohms, it offers substantial headroom and the ability to drive even the most demanding speakers with confidence. Available at Vinyl Sound in Toronto, Canada.\u003c\/p\u003e\n\u003cp bis_size='{\"x\":12,\"y\":192,\"w\":560,\"h\":228,\"abs_x\":12,\"abs_y\":192}'\u003e\u003cimg alt=\"Adcom GFA-555se Stereo Power Amplifier — Vinyl Sound Toronto Canada\" src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-555se-slide1.jpg\" bis_size='{\"x\":12,\"y\":192,\"w\":560,\"h\":224,\"abs_x\":12,\"abs_y\":192}'\u003e\u003c\/p\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":437,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":437}'\u003eA Nelson Pass Legacy\u003c\/h2\u003e\n\u003cp bis_size='{\"x\":12,\"y\":477,\"w\":560,\"h\":117,\"abs_x\":12,\"abs_y\":477}'\u003eThe GFA-555se represents the pinnacle of Adcom's audio engineering heritage. The original GFA-555 was a Nelson Pass design that broke new ground when it was introduced in the 1980s, earning rave reviews and a reputation for tank-like reliability at an accessible price. The enduring demand for these amplifiers decades later is a strong testament to their fundamental engineering quality and musical capability. The GFA-555se honors that legacy while elevating every aspect of its performance for a new generation of listeners.\u003c\/p\u003e\n\u003cp bis_size='{\"x\":12,\"y\":610,\"w\":560,\"h\":228,\"abs_x\":12,\"abs_y\":610}'\u003e\u003cimg alt=\"Adcom GFA-555se amplifier heritage — Vinyl Sound Toronto Canada\" src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-555se-slide7.jpg\" bis_size='{\"x\":12,\"y\":610,\"w\":560,\"h\":224,\"abs_x\":12,\"abs_y\":610}'\u003e\u003c\/p\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":855,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":855}'\u003eUpgraded Internals and Better Sound Delivery\u003c\/h2\u003e\n\u003cp bis_size='{\"x\":12,\"y\":895,\"w\":560,\"h\":137,\"abs_x\":12,\"abs_y\":895}'\u003eAdcom worked to ensure the GFA-555se improves upon its original version in every key area. Externally, the chassis footprint and front panel design remain true to the original. Internally, all circuitry has been upgraded to meet ETL\/ETLc, FCC, LVD, and CE\/EMC requirements using UL-approved FR-4 printed circuit boards. High-performance component selections include ultra-low ESR electrolytic capacitors throughout. The result is lower distortion, better dynamic range, an improved damping factor of 900 or greater, and greater stability and separation of individual instruments across the soundstage.\u003c\/p\u003e\n\u003cp bis_size='{\"x\":12,\"y\":1048,\"w\":560,\"h\":457,\"abs_x\":12,\"abs_y\":1048}'\u003e\u003cimg alt=\"Adcom GFA-555se internal circuitry and upgrades — Vinyl Sound Toronto Canada\" src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-555se-slide8.jpg\" bis_size='{\"x\":12,\"y\":1048,\"w\":560,\"h\":224,\"abs_x\":12,\"abs_y\":1048}'\u003e \u003cimg alt=\"Adcom GFA-555se power amplifier detail — Vinyl Sound Toronto Canada\" src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-555se-slide12.jpg\" bis_size='{\"x\":12,\"y\":1277,\"w\":560,\"h\":224,\"abs_x\":12,\"abs_y\":1277}'\u003e\u003c\/p\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":1521,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":1521}'\u003eKey Features\u003c\/h2\u003e\n\u003cul bis_size='{\"x\":12,\"y\":1565,\"w\":560,\"h\":352,\"abs_x\":12,\"abs_y\":1565}'\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1565,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1565}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1565,\"w\":415,\"h\":19,\"abs_x\":52,\"abs_y\":1565}'\u003e200W per channel into 8 ohms \/ 300W per channel into 4 ohms\u003c\/strong\u003e for authoritative headroom with any speaker\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1604,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1604}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1604,\"w\":255,\"h\":19,\"abs_x\":52,\"abs_y\":1604}'\u003eBridgeable to 600W mono into 8 ohms\u003c\/strong\u003e for maximum power in single-channel or subwoofer applications\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1643,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1643}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1643,\"w\":218,\"h\":19,\"abs_x\":52,\"abs_y\":1643}'\u003eDamping factor of 900 or greater\u003c\/strong\u003e (20Hz to 20kHz) for exceptional speaker control and bass precision\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1682,\"w\":520,\"h\":19,\"abs_x\":52,\"abs_y\":1682}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1682,\"w\":189,\"h\":19,\"abs_x\":52,\"abs_y\":1682}'\u003eUltra-wide power bandwidth\u003c\/strong\u003e from 1.7Hz to 100kHz (-3dB)\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1702,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1702}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1702,\"w\":273,\"h\":19,\"abs_x\":52,\"abs_y\":1702}'\u003eBalanced XLR and unbalanced RCA inputs\u003c\/strong\u003e for flexible integration with any preamplifier\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1741,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1741}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1741,\"w\":382,\"h\":19,\"abs_x\":52,\"abs_y\":1741}'\u003eInput impedance of 100k ohms (RCA) and 10k ohms (XLR)\u003c\/strong\u003e for compatibility with any source component\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1780,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1780}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1780,\"w\":426,\"h\":19,\"abs_x\":52,\"abs_y\":1780}'\u003eUltra-low ESR electrolytic capacitors and UL-approved FR-4 PCBs\u003c\/strong\u003e for reduced distortion and improved dynamic range\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1819,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1819}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1819,\"w\":267,\"h\":19,\"abs_x\":52,\"abs_y\":1819}'\u003eETL\/ETLc, FCC, LVD and CE\/EMC certified\u003c\/strong\u003e to international safety and compliance standards\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1859,\"w\":520,\"h\":19,\"abs_x\":52,\"abs_y\":1859}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1859,\"w\":161,\"h\":19,\"abs_x\":52,\"abs_y\":1859}'\u003eDual voltage compatible\u003c\/strong\u003e at 120VAC and 230VAC \/ 50-60Hz for worldwide use\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1878,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1878}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1878,\"w\":190,\"h\":19,\"abs_x\":52,\"abs_y\":1878}'\u003eClassic Adcom chassis design\u003c\/strong\u003e faithful to the original GFA-555, built for decades of reliable service\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":1931,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":1931}'\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable bis_size='{\"x\":12,\"y\":1971,\"w\":560,\"h\":440,\"abs_x\":12,\"abs_y\":1971}'\u003e\n\u003cthead bis_size='{\"x\":15,\"y\":1974,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":1974}'\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":1974,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":1974}'\u003e\n\u003cth bis_size='{\"x\":15,\"y\":1974,\"w\":228,\"h\":23,\"abs_x\":15,\"abs_y\":1974}'\u003eSpecification\u003c\/th\u003e\n\u003cth bis_size='{\"x\":245,\"y\":1974,\"w\":323,\"h\":23,\"abs_x\":245,\"abs_y\":1974}'\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody bis_size='{\"x\":15,\"y\":2000,\"w\":554,\"h\":409,\"abs_x\":15,\"abs_y\":2000}'\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2000,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2000}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2000,\"w\":228,\"h\":23,\"abs_x\":15,\"abs_y\":2000}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2002,\"w\":219,\"h\":19,\"abs_x\":17,\"abs_y\":2002}'\u003eOutput Power — 8 Ohms (Stereo)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":245,\"y\":2000,\"w\":323,\"h\":23,\"abs_x\":245,\"abs_y\":2000}'\u003e200W per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2026,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2026}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2026,\"w\":228,\"h\":23,\"abs_x\":15,\"abs_y\":2026}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2028,\"w\":219,\"h\":19,\"abs_x\":17,\"abs_y\":2028}'\u003eOutput Power — 4 Ohms (Stereo)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":245,\"y\":2026,\"w\":323,\"h\":23,\"abs_x\":245,\"abs_y\":2026}'\u003e300W per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2051,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2051}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2051,\"w\":228,\"h\":23,\"abs_x\":15,\"abs_y\":2051}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2053,\"w\":211,\"h\":19,\"abs_x\":17,\"abs_y\":2053}'\u003eBridged Mono Power — 8 Ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":245,\"y\":2051,\"w\":323,\"h\":23,\"abs_x\":245,\"abs_y\":2051}'\u003e600W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2077,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2077}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2077,\"w\":228,\"h\":23,\"abs_x\":15,\"abs_y\":2077}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2079,\"w\":133,\"h\":19,\"abs_x\":17,\"abs_y\":2079}'\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":245,\"y\":2077,\"w\":323,\"h\":23,\"abs_x\":245,\"abs_y\":2077}'\u003e10Hz to 20kHz, +0 \/ -0.25dB (1W into 8 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2102,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2102}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2102,\"w\":228,\"h\":23,\"abs_x\":15,\"abs_y\":2102}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2104,\"w\":161,\"h\":19,\"abs_x\":17,\"abs_y\":2104}'\u003ePower Bandwidth (-3dB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":245,\"y\":2102,\"w\":323,\"h\":23,\"abs_x\":245,\"abs_y\":2102}'\u003e1.7Hz to 100kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2128,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2128}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2128,\"w\":228,\"h\":43,\"abs_x\":15,\"abs_y\":2128}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2130,\"w\":211,\"h\":38,\"abs_x\":17,\"abs_y\":2130}'\u003eInput Impedance — Unbalanced (RCA)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":245,\"y\":2128,\"w\":323,\"h\":43,\"abs_x\":245,\"abs_y\":2128}'\u003e100,000 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2173,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2173}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2173,\"w\":228,\"h\":43,\"abs_x\":15,\"abs_y\":2173}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2175,\"w\":193,\"h\":38,\"abs_x\":17,\"abs_y\":2175}'\u003eInput Impedance — Balanced (XLR)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":245,\"y\":2173,\"w\":323,\"h\":43,\"abs_x\":245,\"abs_y\":2173}'\u003e10,000 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2218,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2218}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2218,\"w\":228,\"h\":43,\"abs_x\":15,\"abs_y\":2218}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2230,\"w\":107,\"h\":19,\"abs_x\":17,\"abs_y\":2230}'\u003eInput Sensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":245,\"y\":2218,\"w\":323,\"h\":43,\"abs_x\":245,\"abs_y\":2218}'\u003e1.75V rms (200W into 8 ohms); 130mV rms (1W into 8 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2264,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2264}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2264,\"w\":228,\"h\":23,\"abs_x\":15,\"abs_y\":2264}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2266,\"w\":104,\"h\":19,\"abs_x\":17,\"abs_y\":2266}'\u003eDamping Factor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":245,\"y\":2264,\"w\":323,\"h\":23,\"abs_x\":245,\"abs_y\":2264}'\u003e900 or greater (20Hz to 20kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2289,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2289}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2289,\"w\":228,\"h\":23,\"abs_x\":15,\"abs_y\":2289}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2291,\"w\":90,\"h\":19,\"abs_x\":17,\"abs_y\":2291}'\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":245,\"y\":2289,\"w\":323,\"h\":23,\"abs_x\":245,\"abs_y\":2289}'\u003e120VAC and 230VAC \/ 50-60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2315,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2315}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2315,\"w\":228,\"h\":43,\"abs_x\":15,\"abs_y\":2315}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2317,\"w\":208,\"h\":38,\"abs_x\":17,\"abs_y\":2317}'\u003eMaximum Dimensions (H x W x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":245,\"y\":2315,\"w\":323,\"h\":43,\"abs_x\":245,\"abs_y\":2315}'\u003e7-1\/2\" x 12-1\/2\" x 17\" (191 x 318 x 432 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2360,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2360}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2360,\"w\":228,\"h\":23,\"abs_x\":15,\"abs_y\":2360}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2362,\"w\":47,\"h\":19,\"abs_x\":17,\"abs_y\":2362}'\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":245,\"y\":2360,\"w\":323,\"h\":23,\"abs_x\":245,\"abs_y\":2360}'\u003e36 lbs. (16.3 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2385,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2385}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2385,\"w\":228,\"h\":23,\"abs_x\":15,\"abs_y\":2385}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2387,\"w\":110,\"h\":19,\"abs_x\":17,\"abs_y\":2387}'\u003eShipping Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":245,\"y\":2385,\"w\":323,\"h\":23,\"abs_x\":245,\"abs_y\":2385}'\u003e39 lbs. (18 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":2412,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":2412}'\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":2452,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":2452}'\u003eWhat is the Adcom GFA-555se?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":2485,\"w\":560,\"h\":97,\"abs_x\":12,\"abs_y\":2485}'\u003eThe Adcom GFA-555se is a stereo power amplifier rated at 200 watts per channel into 8 ohms and 300 watts per channel into 4 ohms, bridgeable to 600 watts mono into 8 ohms. It is a modernized version of the original GFA-555, designed by Nelson Pass, featuring upgraded internal circuitry, ultra-low ESR electrolytic capacitors, balanced XLR inputs, and a damping factor of 900 or greater. It is available at Vinyl Sound in Toronto, Canada.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":2599,\"w\":560,\"h\":45,\"abs_x\":12,\"abs_y\":2599}'\u003eWhat is the connection between the GFA-555se and the original GFA-555?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":2656,\"w\":560,\"h\":137,\"abs_x\":12,\"abs_y\":2656}'\u003eThe original Adcom GFA-555 was designed by Nelson Pass and introduced in the 1980s, where it earned widespread critical acclaim and a reputation for exceptional value, high-current performance, and long-term reliability. The GFA-555se is a direct evolution of that design, retaining the same chassis footprint and front panel proportions while upgrading all internal circuitry to current standards. The result is a lower-distortion, higher-dynamic-range amplifier that preserves the sonic character of the original while improving upon it in every measurable area.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":2809,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":2809}'\u003eWhat improvements does the \"se\" designation represent?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":2842,\"w\":560,\"h\":137,\"abs_x\":12,\"abs_y\":2842}'\u003eThe \"se\" designation marks a comprehensive internal upgrade to the original GFA-555 circuit. All circuitry has been redesigned to meet ETL\/ETLc, FCC, LVD, and CE\/EMC certification requirements using UL-approved FR-4 printed circuit boards. Ultra-low ESR electrolytic capacitors are used throughout, improving transient response and reducing distortion. The damping factor has been increased to 900 or greater, and overall stability and channel separation have been enhanced to deliver measurably and audibly improved performance compared to the original version.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":2996,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":2996}'\u003eWhat is the power output and can the GFA-555se be bridged?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3029,\"w\":560,\"h\":78,\"abs_x\":12,\"abs_y\":3029}'\u003eThe GFA-555se delivers 200 watts per channel into 8 ohms and 300 watts per channel into 4 ohms in stereo mode. In bridged mono mode it produces 600 watts into 8 ohms, which is useful for driving a single high-power loudspeaker, a passive subwoofer, or any application requiring the amplifier's full output capability in a single channel.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3123,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":3123}'\u003eWhat is the damping factor of 900 and why does it matter?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3157,\"w\":560,\"h\":137,\"abs_x\":12,\"abs_y\":3157}'\u003eThe GFA-555se achieves a damping factor of 900 or greater from 20Hz to 20kHz, which is among the highest available in its class. Damping factor measures how effectively the amplifier can resist and control unwanted cone movement in the loudspeaker after a transient signal has passed. A damping factor of 900 translates to exceptionally tight, controlled bass reproduction with minimal overhang, bloom, or smearing, particularly in bass-reflex and ported loudspeaker designs where cone control is critical to accurate low-frequency performance.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3310,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":3310}'\u003eWhat type of speakers works best with the GFA-555se?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3344,\"w\":560,\"h\":117,\"abs_x\":12,\"abs_y\":3344}'\u003eThe GFA-555se is compatible with a very wide range of loudspeakers. Its high-current design and unconditional stability make it suitable for low-impedance loads, reactive speaker designs, and high-current-demand loudspeakers that would stress lesser amplifiers. The damping factor of 900 or greater makes it particularly effective with large floorstanding speakers, transmission line designs, and other loudspeakers where precise woofer control is important to bass accuracy and definition.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3477,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":3477}'\u003eWhere can I buy the Adcom GFA-555se in Canada?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3511,\"w\":560,\"h\":58,\"abs_x\":12,\"abs_y\":3511}'\u003eThe Adcom GFA-555se is available at Vinyl Sound, an authorized Adcom dealer in Toronto, Canada. Browse the full \u003ca href=\"\/collections\/power-amplifier\" bis_size='{\"x\":160,\"y\":3530,\"w\":160,\"h\":19,\"abs_x\":160,\"abs_y\":3530}'\u003epower amplifier collection\u003c\/a\u003e at Vinyl Sound or contact our team for system matching advice and in-store listening appointments.\u003c\/p\u003e","brand":"Adcom","offers":[{"title":"Default Title","offer_id":48918898966780,"sku":"GFA-555se","price":2999.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0116\/1773\/0617\/files\/AdcomGFA-555seStereoPowerAmplifier.png?v=1775233728"},{"product_id":"adcom-gfa-565se-stereo-power-amplifier","title":"Adcom GFA-565se Stereo Power Amplifier","description":"\u003ch2\u003eAdcom GFA-565se Stereo Power Amplifier at Vinyl Sound Toronto Canada\u003c\/h2\u003e\n\n\u003cp\u003eThe Adcom GFA-565se is a high-power stereo amplifier we unhesitatingly recommend for even the most demanding high-end systems. A compact sibling of the flagship GFA-575se, it sacrifices nothing when it comes to the revelation of nuance and inner detail. Delivering 250 watts per channel into 8 ohms and maintaining that output unconditionally into any loudspeaker load, the GFA-565se combines genuine high-current authority with the musical transparency expected from a reference-class amplifier. Available at Vinyl Sound in Toronto, Canada.\u003c\/p\u003e\n\n\u003ch2\u003eHigh-Current Performance and Noise Rejection\u003c\/h2\u003e\n\n\u003cp\u003eEngineered with both balanced and unbalanced power stages, the GFA-565se delivers a high level of noise rejection and lower transient distortion across the full operating range. Its ability to draw maximum current from the power supply as demanded by the musical waveform ensures accuracy, dynamics, and control that remain composed regardless of how complex or reactive the speaker load becomes. The GFA-565se is capable of effortlessly driving a wide variety of loudspeakers, including those with exceptionally low impedances, maintaining high-power output consistently even when faced with reactive impedances where the phase differences between voltage and current are significant.\u003c\/p\u003e\n\n\u003ch2\u003ePower Supply Design\u003c\/h2\u003e\n\n\u003cp\u003eAt the heart of the GFA-565se is a robust power supply featuring a generously sized transformer feeding a 72,000µF filter capacitance reservoir. This substantial energy reserve ensures that the amplifier has instantaneous access to the current demanded by any musical transient, without compression or limiting. The transformer was purposefully engineered for exceptional voltage regulation, guaranteeing stable voltages regardless of the power demands placed on either channel. Notably, the GFA-565se possesses the ability to amplify DC signals and is unrestricted in its capacity to deliver energy across low-frequency and peak-bass ranges.\u003c\/p\u003e\n\n\u003ch2\u003eBuild Quality and Construction\u003c\/h2\u003e\n\n\u003cp\u003eGreat care has been taken to ensure the GFA-565se is as flawless in appearance as it is electronically. The front panel is crafted from heavy-gauge anodized aluminum extrusion for durability and a clean, professional finish. The chassis, top cover, and rear panel are heavy-gauge steel, both painted and baked for long-term reliability. Gold-plated brass RCA input jacks with Teflon insulators reflect the same uncompromising attention to quality found throughout the design.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e250W per channel into 8 ohms \/ 350W per channel into 4 ohms\u003c\/strong\u003e with unconditional full-power delivery into any speaker load\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBridgeable to 700W mono into 8 ohms\u003c\/strong\u003e for maximum single-channel output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e72,000µF power supply filter capacitance\u003c\/strong\u003e for massive energy reserve and precise transient response\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDamping factor greater than 800\u003c\/strong\u003e (20Hz to 20kHz) for exceptional speaker control and bass authority\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced XLR and unbalanced RCA inputs\u003c\/strong\u003e for compatibility with professional and consumer preamplifiers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGold-plated brass RCA input jacks with Teflon insulators\u003c\/strong\u003e for premium signal integrity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC amplification capability\u003c\/strong\u003e for unrestricted low-frequency and peak-bass energy delivery\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFront-panel thermal overload LED indicator\u003c\/strong\u003e for real-time safety monitoring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-gauge anodized aluminum front panel and baked steel chassis\u003c\/strong\u003e built for decades of reliable service\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual voltage compatible\u003c\/strong\u003e at 120VAC and 230VAC \/ 50-60Hz for worldwide use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Power — 8 Ohms (Stereo)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e250W per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Power — 4 Ohms (Stereo)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e350W per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBridged Mono Power — 8 Ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e700W\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10Hz to 20kHz, +0 \/ -0.25dB (1W into 8 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Bandwidth (-3dB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5Hz to 100kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100,000 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Sensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12.1V rms (250W into 8 ohms); 130mV rms (1W into 8 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamping Factor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGreater than 800 (20Hz to 20kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply Filter Capacitance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72,000µF\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Connectors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBalanced XLR; Gold-plated brass RCA with Teflon insulators\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e120VAC and 230VAC \/ 50-60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Dimensions (H x W x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7-1\/4\" x 17\" x 14-3\/16\" (185 x 432 x 360 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e51 lbs. (23 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShipping Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e55 lbs. (25 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFront Panel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeavy-gauge anodized aluminum extrusion\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeavy-gauge painted and baked steel\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3\u003eWhat is the Adcom GFA-565se?\u003c\/h3\u003e\n\u003cp\u003eThe Adcom GFA-565se is a high-current stereo power amplifier rated at 250 watts per channel into 8 ohms and 350 watts per channel into 4 ohms, bridgeable to 700 watts mono into 8 ohms. It features a 72,000µF power supply filter capacitance, a damping factor greater than 800, and both balanced XLR and unbalanced RCA inputs. It is designed as a compact high-performance alternative to the flagship GFA-575se and is available at Vinyl Sound in Toronto, Canada.\u003c\/p\u003e\n\n\u003ch3\u003eWhat is the power output of the Adcom GFA-565se?\u003c\/h3\u003e\n\u003cp\u003eThe GFA-565se is rated at 250 watts per channel into 8 ohms and 350 watts per channel into 4 ohms in stereo mode. In bridged mono mode it delivers 700 watts into 8 ohms. Full power output is maintained unconditionally into any loudspeaker load, including those with very low impedances and highly reactive characteristics that would cause less capable amplifiers to compress or become unstable.\u003c\/p\u003e\n\n\u003ch3\u003eHow is the GFA-565se different from the GFA-575se?\u003c\/h3\u003e\n\u003cp\u003eThe GFA-565se is a compact version of the more powerful GFA-575se, sharing the same design philosophy and commitment to high-current performance but in a smaller chassis with a lower power rating. The GFA-565se's 250 watts per channel and 72,000µF power supply make it the preferred choice for systems where the GFA-575se's higher output is not required, while still delivering the same unconditional speaker load stability, high damping factor, and musical transparency that define the GFA-575se series.\u003c\/p\u003e\n\n\u003ch3\u003eCan the GFA-565se handle low-impedance and reactive speaker loads?\u003c\/h3\u003e\n\u003cp\u003eYes. The GFA-565se is specifically engineered to drive loudspeakers with exceptionally low impedances at sustained high-power levels, even when the impedances are highly reactive and the phase angles between voltage and current are significant. Its high-current design and robust power supply ensure that distortion remains minimal under these demanding conditions, maintaining composure and control regardless of how complex the load becomes.\u003c\/p\u003e\n\n\u003ch3\u003eWhat does bridging the GFA-565se do and when is it useful?\u003c\/h3\u003e\n\u003cp\u003eBridging combines both stereo channels of the GFA-565se into a single high-output mono amplifier delivering 700 watts into 8 ohms. This is useful when driving a single high-power loudspeaker, a passive subwoofer requiring maximum headroom, or any application demanding the full output capability of the amplifier in a single channel. A minimum speaker impedance of 8 ohms is recommended in bridged mono mode.\u003c\/p\u003e\n\n\u003ch3\u003eWhat is the role of the 72,000µF filter capacitance in the GFA-565se?\u003c\/h3\u003e\n\u003cp\u003eThe 72,000µF power supply filter capacitance in the GFA-565se acts as an energy reservoir that stores charge and releases it instantaneously when the musical signal demands it, without waiting for the transformer to respond. This ensures that the amplifier maintains stable output voltage during transient peaks — the sharp, sudden bursts of energy in percussive music and dynamic passages — preventing compression or audible clipping that can occur when the power supply is undersized relative to the amplifier's output capability.\u003c\/p\u003e\n\n\u003ch3\u003eWhere can I buy the Adcom GFA-565se in Canada?\u003c\/h3\u003e\n\u003cp\u003eThe Adcom GFA-565se is available at Vinyl Sound, an authorized Adcom dealer in Toronto, Canada. Browse the full \u003ca href=\"\/collections\/power-amplifier\"\u003epower amplifier collection\u003c\/a\u003e at Vinyl Sound or contact our team for system matching advice and in-store listening appointments.\u003c\/p\u003e","brand":"Adcom","offers":[{"title":"Default Title","offer_id":48918899261692,"sku":"GFA-565se","price":3299.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0116\/1773\/0617\/files\/AdcomGFA-565seStereoPowerAmplifier_1.png?v=1775233730"},{"product_id":"adcom-gfa-585se-stereo-power-amplifier","title":"Adcom GFA-585se Stereo Power Amplifier","description":"\u003ch2 bis_size='{\"x\":12,\"y\":9,\"w\":560,\"h\":58,\"abs_x\":12,\"abs_y\":9}'\u003eAdcom GFA-585se Stereo Power Amplifier at Vinyl Sound Toronto Canada\u003c\/h2\u003e\n\u003cp bis_size='{\"x\":12,\"y\":78,\"w\":560,\"h\":97,\"abs_x\":12,\"abs_y\":78}'\u003eThe Adcom GFA-585se is a high-performance stereo power amplifier built to deliver authority, precision, and musical transparency in equal measure. A pure Class A\/B design with parallel-driven topology, it delivers 450 watts per channel into 8 ohms with the ability to drive speaker loads down to 2 ohms with complete stability and composure. Available at Vinyl Sound in Toronto, Canada.\u003c\/p\u003e\n\u003cp bis_size='{\"x\":12,\"y\":192,\"w\":560,\"h\":299,\"abs_x\":12,\"abs_y\":192}'\u003e\u003cimg alt=\"Adcom GFA-585se Stereo Power Amplifier — Vinyl Sound Toronto Canada\" src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-585se-slide1.jpg\" bis_size='{\"x\":12,\"y\":192,\"w\":559,\"h\":294,\"abs_x\":12,\"abs_y\":192}'\u003e\u003c\/p\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":508,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":508}'\u003eClass A\/B Design and High-Current Output\u003c\/h2\u003e\n\u003cp bis_size='{\"x\":12,\"y\":548,\"w\":560,\"h\":195,\"abs_x\":12,\"abs_y\":548}'\u003eEvery component inside the GFA-585se was refined and upgraded during development to create a more capable, more revealing amplifier. The result is lower distortion, better dynamic range, improved damping factor, and greater stability and separation of individual instruments across the soundstage. Ultra-low ESR electrolytic capacitors and UL-approved FR-4 printed circuit boards reflect the same uncompromising approach applied throughout. At the core of the GFA-585se's power delivery are 14 pairs of TO-3-type metal-cased bipolar output transistors per channel, arranged in a triple-Darlington configuration. This topology ensures very efficient power delivery to reactive loads regardless of the phase angle between voltage and current, making the GFA-585se one of the most speaker-friendly high-power amplifiers available at its price point.\u003c\/p\u003e\n\u003cp bis_size='{\"x\":12,\"y\":760,\"w\":560,\"h\":299,\"abs_x\":12,\"abs_y\":760}'\u003e\u003cimg alt=\"Adcom GFA-585se output transistors and circuit board — Vinyl Sound Toronto Canada\" src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-585se-slide2.jpg\" bis_size='{\"x\":12,\"y\":760,\"w\":559,\"h\":294,\"abs_x\":12,\"abs_y\":760}'\u003e\u003c\/p\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":1075,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":1075}'\u003eSonics and Soundstage\u003c\/h2\u003e\n\u003cp bis_size='{\"x\":12,\"y\":1115,\"w\":560,\"h\":78,\"abs_x\":12,\"abs_y\":1115}'\u003eThe GFA-585se strikes a compelling balance between impact and finesse. Bass is deep and controlled, the midrange is open and expressive, and the highs extend smoothly with natural detail. The result is a presentation that feels powerful yet refined, with a wide, stable soundstage that holds together at any volume level.\u003c\/p\u003e\n\u003cp bis_size='{\"x\":12,\"y\":1209,\"w\":560,\"h\":299,\"abs_x\":12,\"abs_y\":1209}'\u003e\u003cimg alt=\"Adcom GFA-585se interior and build quality — Vinyl Sound Toronto Canada\" src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-585se-slide4.jpg\" bis_size='{\"x\":12,\"y\":1209,\"w\":559,\"h\":294,\"abs_x\":12,\"abs_y\":1209}'\u003e\u003c\/p\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":1525,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":1525}'\u003eKey Features\u003c\/h2\u003e\n\u003cul bis_size='{\"x\":12,\"y\":1568,\"w\":560,\"h\":431,\"abs_x\":12,\"abs_y\":1568}'\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1568,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1568}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1568,\"w\":415,\"h\":19,\"abs_x\":52,\"abs_y\":1568}'\u003e450W per channel into 8 ohms \/ 600W per channel into 4 ohms\u003c\/strong\u003e for massive, headroom-rich power output\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1607,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1607}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1607,\"w\":263,\"h\":19,\"abs_x\":52,\"abs_y\":1607}'\u003eBridgeable to 1000W mono into 8 ohms\u003c\/strong\u003e for maximum output in single-channel or subwoofer applications\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1646,\"w\":520,\"h\":19,\"abs_x\":52,\"abs_y\":1646}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1646,\"w\":190,\"h\":19,\"abs_x\":52,\"abs_y\":1646}'\u003eDrives loads down to 2 ohms\u003c\/strong\u003e with unconditional stability and composure\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1666,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1666}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1666,\"w\":201,\"h\":19,\"abs_x\":52,\"abs_y\":1666}'\u003e50+ amps peak output current\u003c\/strong\u003e for instantaneous transient demands on complex, reactive loads\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1705,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1705}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1705,\"w\":263,\"h\":19,\"abs_x\":52,\"abs_y\":1705}'\u003ePure Class A\/B, parallel-driven topology\u003c\/strong\u003e for high efficiency with audiophile-grade linearity\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1744,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1744}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1744,\"w\":358,\"h\":19,\"abs_x\":52,\"abs_y\":1744}'\u003e14 pairs of TO-3 bipolar output transistors per channel\u003c\/strong\u003e in a triple-Darlington configuration for robust, clean power\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1783,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1783}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1783,\"w\":273,\"h\":19,\"abs_x\":52,\"abs_y\":1783}'\u003eBalanced XLR and unbalanced RCA inputs\u003c\/strong\u003e for compatibility with professional and consumer preamplifiers\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1823,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1823}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1823,\"w\":237,\"h\":19,\"abs_x\":52,\"abs_y\":1823}'\u003eUltra-low ESR electrolytic capacitors\u003c\/strong\u003e for reduced distortion and improved dynamic range\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1862,\"w\":520,\"h\":19,\"abs_x\":52,\"abs_y\":1862}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1862,\"w\":123,\"h\":19,\"abs_x\":52,\"abs_y\":1862}'\u003e12V trigger output\u003c\/strong\u003e for integrated system automation\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1881,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1881}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1881,\"w\":290,\"h\":19,\"abs_x\":52,\"abs_y\":1881}'\u003eOutput relay and thermal protection circuits\u003c\/strong\u003e with front-panel LED indicators for safe operation\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1921,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1921}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1921,\"w\":267,\"h\":19,\"abs_x\":52,\"abs_y\":1921}'\u003eETL\/ETLc, FCC, LVD and CE\/EMC certified\u003c\/strong\u003e to international safety and compliance standards\u003c\/li\u003e\n\u003cli bis_size='{\"x\":52,\"y\":1960,\"w\":520,\"h\":39,\"abs_x\":52,\"abs_y\":1960}'\u003e\n\u003cstrong bis_size='{\"x\":52,\"y\":1960,\"w\":509,\"h\":19,\"abs_x\":52,\"abs_y\":1960}'\u003eHeavy-gauge anodized aluminum front panel and painted baked steel chassis\u003c\/strong\u003e built for decades of reliable service\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":2013,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":2013}'\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable bis_size='{\"x\":12,\"y\":2053,\"w\":560,\"h\":775,\"abs_x\":12,\"abs_y\":2053}'\u003e\n\u003cthead bis_size='{\"x\":15,\"y\":2056,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2056}'\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2056,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2056}'\u003e\n\u003cth bis_size='{\"x\":15,\"y\":2056,\"w\":179,\"h\":23,\"abs_x\":15,\"abs_y\":2056}'\u003eSpecification\u003c\/th\u003e\n\u003cth bis_size='{\"x\":196,\"y\":2056,\"w\":372,\"h\":23,\"abs_x\":196,\"abs_y\":2056}'\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody bis_size='{\"x\":15,\"y\":2082,\"w\":554,\"h\":743,\"abs_x\":15,\"abs_y\":2082}'\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2082,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2082}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2082,\"w\":179,\"h\":43,\"abs_x\":15,\"abs_y\":2082}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2084,\"w\":163,\"h\":38,\"abs_x\":17,\"abs_y\":2084}'\u003eOutput Power — 8 Ohms (Stereo)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":196,\"y\":2082,\"w\":372,\"h\":43,\"abs_x\":196,\"abs_y\":2082}'\u003e450W per channel (both channels driven, \u0026lt;0.05% THD, 20Hz–20kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2127,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2127}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2127,\"w\":179,\"h\":43,\"abs_x\":15,\"abs_y\":2127}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2129,\"w\":163,\"h\":38,\"abs_x\":17,\"abs_y\":2129}'\u003eOutput Power — 4 Ohms (Stereo)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":196,\"y\":2127,\"w\":372,\"h\":43,\"abs_x\":196,\"abs_y\":2127}'\u003e600W per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2172,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2172}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2172,\"w\":179,\"h\":43,\"abs_x\":15,\"abs_y\":2172}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2174,\"w\":169,\"h\":38,\"abs_x\":17,\"abs_y\":2174}'\u003eBridged Mono Power — 8 Ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":196,\"y\":2172,\"w\":372,\"h\":43,\"abs_x\":196,\"abs_y\":2172}'\u003e1000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2217,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2217}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2217,\"w\":179,\"h\":23,\"abs_x\":15,\"abs_y\":2217}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2219,\"w\":135,\"h\":19,\"abs_x\":17,\"abs_y\":2219}'\u003ePeak Output Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":196,\"y\":2217,\"w\":372,\"h\":23,\"abs_x\":196,\"abs_y\":2217}'\u003e50+ amperes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2243,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2243}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2243,\"w\":179,\"h\":43,\"abs_x\":15,\"abs_y\":2243}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2245,\"w\":120,\"h\":38,\"abs_x\":17,\"abs_y\":2245}'\u003eMinimum Speaker Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":196,\"y\":2243,\"w\":372,\"h\":43,\"abs_x\":196,\"abs_y\":2243}'\u003e2 ohms (stereo); 4 ohms recommended (bridged)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2288,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2288}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2288,\"w\":179,\"h\":23,\"abs_x\":15,\"abs_y\":2288}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2290,\"w\":133,\"h\":19,\"abs_x\":17,\"abs_y\":2290}'\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":196,\"y\":2288,\"w\":372,\"h\":23,\"abs_x\":196,\"abs_y\":2288}'\u003e10Hz to 20kHz, +0 \/ -0.25dB (1W into 8 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2313,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2313}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2313,\"w\":179,\"h\":23,\"abs_x\":15,\"abs_y\":2313}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2315,\"w\":116,\"h\":19,\"abs_x\":17,\"abs_y\":2315}'\u003ePower Bandwidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":196,\"y\":2313,\"w\":372,\"h\":23,\"abs_x\":196,\"abs_y\":2313}'\u003e20Hz to 20kHz (0.25dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2339,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2339}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2339,\"w\":179,\"h\":23,\"abs_x\":15,\"abs_y\":2339}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2341,\"w\":111,\"h\":19,\"abs_x\":17,\"abs_y\":2341}'\u003eInput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":196,\"y\":2339,\"w\":372,\"h\":23,\"abs_x\":196,\"abs_y\":2339}'\u003e22,000 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2365,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2365}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2365,\"w\":179,\"h\":43,\"abs_x\":15,\"abs_y\":2365}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2376,\"w\":107,\"h\":19,\"abs_x\":17,\"abs_y\":2376}'\u003eInput Sensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":196,\"y\":2365,\"w\":372,\"h\":43,\"abs_x\":196,\"abs_y\":2365}'\u003e2.681V rms (450W into 8 ohms); 126mV rms (1W into 8 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2410,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2410}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2410,\"w\":179,\"h\":23,\"abs_x\":15,\"abs_y\":2410}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2412,\"w\":104,\"h\":19,\"abs_x\":17,\"abs_y\":2412}'\u003eDamping Factor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":196,\"y\":2410,\"w\":372,\"h\":23,\"abs_x\":196,\"abs_y\":2410}'\u003eGreater than 800 (20Hz to 20kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2435,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2435}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2435,\"w\":179,\"h\":23,\"abs_x\":15,\"abs_y\":2435}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2437,\"w\":98,\"h\":19,\"abs_x\":17,\"abs_y\":2437}'\u003eAmplifier Class\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":196,\"y\":2435,\"w\":372,\"h\":23,\"abs_x\":196,\"abs_y\":2435}'\u003ePure Class A\/B, parallel-driven\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2461,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2461}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2461,\"w\":179,\"h\":43,\"abs_x\":15,\"abs_y\":2461}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2473,\"w\":121,\"h\":19,\"abs_x\":17,\"abs_y\":2473}'\u003eOutput Transistors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":196,\"y\":2461,\"w\":372,\"h\":43,\"abs_x\":196,\"abs_y\":2461}'\u003e14 pairs TO-3 bipolar per channel, triple-Darlington configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2506,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2506}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2506,\"w\":179,\"h\":23,\"abs_x\":15,\"abs_y\":2506}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2508,\"w\":113,\"h\":19,\"abs_x\":17,\"abs_y\":2508}'\u003eInput Connectors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":196,\"y\":2506,\"w\":372,\"h\":23,\"abs_x\":196,\"abs_y\":2506}'\u003eBalanced XLR and unbalanced RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2532,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2532}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2532,\"w\":179,\"h\":23,\"abs_x\":15,\"abs_y\":2532}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2534,\"w\":47,\"h\":19,\"abs_x\":17,\"abs_y\":2534}'\u003eTrigger\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":196,\"y\":2532,\"w\":372,\"h\":23,\"abs_x\":196,\"abs_y\":2532}'\u003e12V \/ 100mA output (3.5mm jack)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2557,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2557}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2557,\"w\":179,\"h\":23,\"abs_x\":15,\"abs_y\":2557}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2559,\"w\":89,\"h\":19,\"abs_x\":17,\"abs_y\":2559}'\u003ePCB Standard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":196,\"y\":2557,\"w\":372,\"h\":23,\"abs_x\":196,\"abs_y\":2557}'\u003eUL-approved FR-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2583,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2583}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2583,\"w\":179,\"h\":23,\"abs_x\":15,\"abs_y\":2583}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2585,\"w\":87,\"h\":19,\"abs_x\":17,\"abs_y\":2585}'\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":196,\"y\":2583,\"w\":372,\"h\":23,\"abs_x\":196,\"abs_y\":2583}'\u003eETL\/ETLc, FCC, LVD, CE\/EMC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2609,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2609}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2609,\"w\":179,\"h\":23,\"abs_x\":15,\"abs_y\":2609}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2611,\"w\":90,\"h\":19,\"abs_x\":17,\"abs_y\":2611}'\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":196,\"y\":2609,\"w\":372,\"h\":23,\"abs_x\":196,\"abs_y\":2609}'\u003e120VAC and 230VAC \/ 50-60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2634,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2634}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2634,\"w\":179,\"h\":43,\"abs_x\":15,\"abs_y\":2634}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2636,\"w\":166,\"h\":38,\"abs_x\":17,\"abs_y\":2636}'\u003eMaximum Dimensions (H x W x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":196,\"y\":2634,\"w\":372,\"h\":43,\"abs_x\":196,\"abs_y\":2634}'\u003e10-3\/4\" x 19\" x 19-3\/4\" (275 x 482 x 502 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2679,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2679}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2679,\"w\":179,\"h\":23,\"abs_x\":15,\"abs_y\":2679}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2681,\"w\":47,\"h\":19,\"abs_x\":17,\"abs_y\":2681}'\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":196,\"y\":2679,\"w\":372,\"h\":23,\"abs_x\":196,\"abs_y\":2679}'\u003e70.4 lbs. (32 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2705,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2705}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2705,\"w\":179,\"h\":23,\"abs_x\":15,\"abs_y\":2705}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2707,\"w\":110,\"h\":19,\"abs_x\":17,\"abs_y\":2707}'\u003eShipping Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":196,\"y\":2705,\"w\":372,\"h\":23,\"abs_x\":196,\"abs_y\":2705}'\u003e79.2 lbs. (36 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2731,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2731}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2731,\"w\":179,\"h\":23,\"abs_x\":15,\"abs_y\":2731}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2733,\"w\":74,\"h\":19,\"abs_x\":17,\"abs_y\":2733}'\u003eFront Panel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":196,\"y\":2731,\"w\":372,\"h\":23,\"abs_x\":196,\"abs_y\":2731}'\u003eHeavy-gauge anodized aluminum extrusion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2756,\"w\":554,\"h\":23,\"abs_x\":15,\"abs_y\":2756}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2756,\"w\":179,\"h\":23,\"abs_x\":15,\"abs_y\":2756}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2758,\"w\":47,\"h\":19,\"abs_x\":17,\"abs_y\":2758}'\u003eChassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":196,\"y\":2756,\"w\":372,\"h\":23,\"abs_x\":196,\"abs_y\":2756}'\u003eHeavy-gauge painted and baked steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr bis_size='{\"x\":15,\"y\":2782,\"w\":554,\"h\":43,\"abs_x\":15,\"abs_y\":2782}'\u003e\n\u003ctd bis_size='{\"x\":15,\"y\":2782,\"w\":179,\"h\":43,\"abs_x\":15,\"abs_y\":2782}'\u003e\u003cstrong bis_size='{\"x\":17,\"y\":2794,\"w\":68,\"h\":19,\"abs_x\":17,\"abs_y\":2794}'\u003eProtection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd bis_size='{\"x\":196,\"y\":2782,\"w\":372,\"h\":43,\"abs_x\":196,\"abs_y\":2782}'\u003eOutput relay (short circuit \/ DC) and thermal protection with front-panel LED indicators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 bis_size='{\"x\":12,\"y\":2828,\"w\":560,\"h\":29,\"abs_x\":12,\"abs_y\":2828}'\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":2868,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":2868}'\u003eWhat is the Adcom GFA-585se?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":2901,\"w\":560,\"h\":97,\"abs_x\":12,\"abs_y\":2901}'\u003eThe Adcom GFA-585se is a stereo power amplifier rated at 450 watts per channel into 8 ohms and 600 watts per channel into 4 ohms, both channels driven simultaneously. It uses a pure Class A\/B parallel-driven topology with 14 pairs of TO-3 bipolar output transistors per channel in a triple-Darlington configuration, and is bridgeable to 1000 watts mono into 8 ohms. It is available at Vinyl Sound in Toronto, Canada.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3015,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":3015}'\u003eWhat is the power output of the Adcom GFA-585se?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3049,\"w\":560,\"h\":97,\"abs_x\":12,\"abs_y\":3049}'\u003eThe GFA-585se is rated at 450 watts per channel into 8 ohms and 600 watts per channel into 4 ohms in stereo mode, with both channels driven simultaneously at less than 0.05% THD across the full 20Hz to 20kHz audio band. In bridged mono mode it delivers 1000 watts into 8 ohms, making it equally suited to demanding stereo systems and high-output single-channel applications such as powered subwoofer integration.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3163,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":3163}'\u003eCan the GFA-585se drive 2-ohm speaker loads?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3196,\"w\":560,\"h\":117,\"abs_x\":12,\"abs_y\":3196}'\u003eYes. The GFA-585se is designed for unconditional stability into loads as low as 2 ohms in stereo mode. Its 14 pairs of TO-3 bipolar output transistors per channel and triple-Darlington circuit topology maintain stable, low-distortion output even when the speaker load presents a highly reactive impedance with significant phase angles between voltage and current. In bridged mono mode, a minimum speaker impedance of 4 ohms is recommended.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3330,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":3330}'\u003eWhat does bridging mean for the GFA-585se, and when should I use it?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3363,\"w\":560,\"h\":117,\"abs_x\":12,\"abs_y\":3363}'\u003eBridging combines both channels of the GFA-585se into a single high-power mono output, delivering 1000 watts into 8 ohms. This is useful when driving a single high-power loudspeaker, a passive subwoofer requiring maximum headroom, or a center channel speaker in a high-output home theater system. When bridged, the minimum recommended speaker impedance is 4 ohms. A second amplifier would be required to power additional channels when operating in bridged mono mode.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3497,\"w\":560,\"h\":45,\"abs_x\":12,\"abs_y\":3497}'\u003eWhat is the \"se\" upgrade in the GFA-585se compared to the original GFA-585?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3553,\"w\":560,\"h\":137,\"abs_x\":12,\"abs_y\":3553}'\u003eThe GFA-585se is an upgraded and refined version of the original GFA-585. During development, every component was reviewed and improved to achieve lower distortion, better dynamic range, improved damping factor (greater than 800 versus the original's specification), and greater stability across the soundstage. Ultra-low ESR electrolytic capacitors and UL-approved FR-4 printed circuit boards were adopted as part of this refinement program, resulting in measurably and audibly improved performance across the full operating range.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3706,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":3706}'\u003eWhat is the damping factor of the GFA-585se, and why does it matter?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3740,\"w\":560,\"h\":137,\"abs_x\":12,\"abs_y\":3740}'\u003eThe GFA-585se has a damping factor greater than 800 from 20Hz to 20kHz, which is exceptionally high for a power amplifier of this class. Damping factor describes how effectively the amplifier can control the motion of the loudspeaker cone after a transient signal. A high damping factor translates to tighter, more controlled bass reproduction and improved transient accuracy, particularly with large woofers and bass-reflex loudspeaker designs that can be prone to overhang and bloom when driven by amplifiers with lower damping.\u003c\/p\u003e\n\u003ch3 bis_size='{\"x\":12,\"y\":3893,\"w\":560,\"h\":22,\"abs_x\":12,\"abs_y\":3893}'\u003eWhere can I buy the Adcom GFA-585se in Canada?\u003c\/h3\u003e\n\u003cp bis_size='{\"x\":12,\"y\":3926,\"w\":560,\"h\":58,\"abs_x\":12,\"abs_y\":3926}'\u003eThe Adcom GFA-585se is available at Vinyl Sound, an authorized Adcom dealer in Toronto, Canada. Browse the full \u003ca href=\"\/collections\/power-amplifier\" bis_size='{\"x\":160,\"y\":3946,\"w\":160,\"h\":19,\"abs_x\":160,\"abs_y\":3946}'\u003epower amplifier collection\u003c\/a\u003e at Vinyl Sound or contact our team for system matching advice and in-store listening appointments.\u003c\/p\u003e","brand":"Adcom","offers":[{"title":"Default Title","offer_id":48918901293308,"sku":"GFA-585se","price":5699.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0116\/1773\/0617\/files\/AdcomGFA-585seStereoPowerAmplifier_1.png?v=1775233733"},{"product_id":"adcom-gfa-5705-5-channel-amplifier","title":"Adcom GFA-5705 5 Channel Amplifier","description":"\u003ch2\u003eAdcom GFA-5705 5-Channel Stereo Power Amplifier at Vinyl Sound Toronto Canada\u003c\/h2\u003e\n\n\u003cp\u003eThe Adcom GFA-5705 is a high-performance 5-channel stereo power amplifier engineered specifically for home theater systems that demand real power across every channel. Delivering 200 watts per channel into 8 ohms with all five channels driven simultaneously, the GFA-5705 brings the same high-current authority and low-distortion performance Adcom is known for to the full surround sound experience. Available at Vinyl Sound in Toronto, Canada.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-5705-slide1.jpg\" alt=\"Adcom GFA-5705 5-Channel Stereo Power Amplifier — Vinyl Sound Toronto Canada\"\u003e\n\n\u003ch2\u003ePower Output and High-Current Performance\u003c\/h2\u003e\n\n\u003cp\u003eThe GFA-5705 is built to drive a very broad range of loudspeakers, including those with very low impedances, at sustained high-power levels even when impedances are highly reactive. Great care was taken to ensure distortion remains extremely low, particularly when driving highly reactive loads in which the phase angles of voltage and current are substantially different. To achieve this, three pairs of specially selected TO3-type metal-cased bipolar output transistors are used per channel — 15 pairs in total — in a triple-Darlington configuration that ensures very efficient power delivery to reactive loads regardless of phase angle. With 200 watts per channel into 8 ohms and 300 watts per channel into 4 ohms across all five channels driven simultaneously, the GFA-5705 maintains full dynamic authority from quiet dialogue to full-range multi-channel peaks.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-5705-slide5.jpg\" alt=\"Adcom GFA-5705 Power Amplifier power supply section — Vinyl Sound Toronto Canada\"\u003e\n\n\u003ch2\u003eMassive Toroidal Power Supply\u003c\/h2\u003e\n\n\u003cp\u003eAt the core of the GFA-5705 is a substantial power supply built around a high-efficiency toroidal transformer, chosen for superior voltage regulation and minimal radiated noise. The transformer feeds an enormous storage bank of 30,000µF of filter capacitance per channel, totaling 150,000µF across all five channels. This reserve ensures stable, unwavering voltage under any power demand, keeping every channel composed and in control from sustained low-frequency passages to instantaneous transient peaks.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-5705-slide6.jpg\" alt=\"Adcom GFA-5705 toroidal transformer and filter capacitors — Vinyl Sound Toronto Canada\"\u003e\n\n\u003ch2\u003eBuild Quality and Construction\u003c\/h2\u003e\n\n\u003cp\u003eThe GFA-5705 is built to the same standard of physical quality as its electronic performance demands. The front panel is crafted from heavy-gauge anodized aluminum extrusion for durability and a clean, professional appearance. The chassis, top cover, and rear panel are constructed from heavy-gauge steel, both painted and baked for long-term durability. The result is a substantial amplifier that suits both dedicated listening rooms and custom installation environments.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-5705-slide7.jpg\" alt=\"Adcom GFA-5705 5-Channel Amplifier chassis detail — Vinyl Sound Toronto Canada\"\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced XLR and unbalanced RCA inputs\u003c\/strong\u003e on all five channels for flexible system integration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24K gold-plated 5-way speaker terminals\u003c\/strong\u003e on all channels for secure, low-resistance connections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto ON\/OFF and 12V\/5V DC trigger input\/output\u003c\/strong\u003e for automated system control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e200W per channel into 8 ohms \/ 300W per channel into 4 ohms\u003c\/strong\u003e, all five channels driven simultaneously\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e150,000µF total filter capacitance\u003c\/strong\u003e (30,000µF per channel) for massive power reserve and sustained high-current delivery\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-efficiency toroidal transformer\u003c\/strong\u003e with exceptional voltage regulation, minimal noise, and low leakage inductance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrives low-impedance and reactive speaker loads\u003c\/strong\u003e with stability and control at all output levels\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDamping factor greater than 300\u003c\/strong\u003e from 20Hz to 20kHz for tight, authoritative bass across all channels\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-wide power bandwidth\u003c\/strong\u003e from 5Hz to 100kHz (-3dB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurpose-built 5-channel design\u003c\/strong\u003e for home theater surround sound systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual voltage compatible\u003c\/strong\u003e at 120VAC and 230VAC \/ 50-60Hz for worldwide use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-gauge anodized aluminum front panel and baked steel chassis\u003c\/strong\u003e for long-term reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-5705-slide8.jpg\" alt=\"Adcom GFA-5705 5-Channel Amplifier front panel — Vinyl Sound Toronto Canada\"\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Power — 8 Ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200W per channel x 5 (all channels driven)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Power — 4 Ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300W per channel x 5 (all channels driven)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNumber of Channels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10Hz to 20kHz, +0 \/ -0.25dB (1W into 8 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Bandwidth (-3dB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5Hz to 100kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e22,000 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Sensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.8V rms (200W into 8 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamping Factor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGreater than 300 (20Hz to 20kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply Filter Capacitance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e150,000µF total (30,000µF per channel)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Transformer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh-efficiency toroidal design\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBalanced XLR and unbalanced RCA (5 channels each)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpeaker Terminals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24K gold-plated 5-way binding posts\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e120VAC and 230VAC \/ 50-60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Dimensions (H x W x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10.75\" x 19\" x 19.75\" (275 x 480 x 565 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e81 lbs. (37 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShipping Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e90 lbs. (41 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFront Panel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeavy-gauge anodized aluminum extrusion\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeavy-gauge painted and baked steel\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3\u003eWhat is the Adcom GFA-5705?\u003c\/h3\u003e\n\u003cp\u003eThe Adcom GFA-5705 is a 5-channel stereo power amplifier rated at 200 watts per channel into 8 ohms and 300 watts per channel into 4 ohms, with all five channels driven simultaneously. It is built around a high-efficiency toroidal transformer with 150,000µF of total filter capacitance and balanced XLR inputs on all five channels, and is designed for home theater surround sound systems requiring high-current, low-distortion power across every channel. It is available at Vinyl Sound in Toronto, Canada.\u003c\/p\u003e\n\n\u003ch3\u003eCan the GFA-5705 drive all five channels simultaneously at full power?\u003c\/h3\u003e\n\u003cp\u003eYes. The GFA-5705 is rated at 200 watts per channel into 8 ohms and 300 watts per channel into 4 ohms with all five channels driven simultaneously, not just a single channel as is common in many competing multi-channel amplifier specifications. The 150,000µF power supply filter capacitance and toroidal transformer maintain stable output voltage under the full demand of five simultaneous high-power channels.\u003c\/p\u003e\n\n\u003ch3\u003eWhat type of home theater system is the GFA-5705 designed for?\u003c\/h3\u003e\n\u003cp\u003eThe GFA-5705 is ideal for 5-channel surround sound systems using front left, center, front right, surround left, and surround right speaker configurations. Its high-current output stage maintains stable performance even when the phase angle between voltage and current diverges significantly, making it particularly suitable for demanding speaker systems, low-sensitivity designs, and dipole or bipole surround speakers that present complex impedance curves.\u003c\/p\u003e\n\n\u003ch3\u003eWhat is the significance of the toroidal transformer and 150,000µF filter capacitance?\u003c\/h3\u003e\n\u003cp\u003eThe toroidal transformer in the GFA-5705 provides superior voltage regulation and lower radiated electromagnetic interference compared to conventional EI-core transformer designs, reducing noise pickup in sensitive audio circuits. The 150,000µF of total filter capacitance (30,000µF per channel) acts as an energy reservoir that supplies instantaneous current during transient peaks without waiting for the transformer to respond, ensuring the amplifier maintains stable output voltage and control during demanding multi-channel passages.\u003c\/p\u003e\n\n\u003ch3\u003eCan the Adcom GFA-5705 be installed in an equipment rack?\u003c\/h3\u003e\n\u003cp\u003eThe GFA-5705 can be placed in a standard equipment rack on a dedicated shelf, but rack mounting brackets are not available for this amplifier. At 81 pounds and with maximum dimensions of 10.75\" x 19\" x 19.75\", it requires a sturdy shelf with full support across its base. Adequate ventilation clearance of at least four inches on all sides must be maintained to prevent thermal shutdown.\u003c\/p\u003e\n\n\u003ch3\u003eDoes the GFA-5705 work with low-impedance or reactive speakers?\u003c\/h3\u003e\n\u003cp\u003eYes. The GFA-5705 was specifically designed to drive loudspeakers with very low impedances and highly reactive loads at sustained high-power levels. Its 15 matched pairs of TO3 bipolar output transistors in a triple-Darlington configuration maintain stable performance even when the phase angle between voltage and current diverges significantly, which is characteristic of electrostatic, planar magnetic, and other reactive speaker designs commonly used in high-performance home theater systems.\u003c\/p\u003e\n\n\u003ch3\u003eIs the Adcom GFA-5705 compatible with both 120V and 230V power?\u003c\/h3\u003e\n\u003cp\u003eYes. The GFA-5705 is dual voltage compatible, operating on both 120VAC and 230VAC at 50-60Hz, making it suitable for use in North America, Europe, and other international markets. Confirm the voltage setting matches your local supply before connecting the unit to power for the first time.\u003c\/p\u003e\n\n\u003ch3\u003eWhere can I buy the Adcom GFA-5705 in Canada?\u003c\/h3\u003e\n\u003cp\u003eThe Adcom GFA-5705 is available at Vinyl Sound, an authorized Adcom dealer in Toronto, Canada. Browse the full \u003ca href=\"\/collections\/power-amplifier\"\u003epower amplifier collection\u003c\/a\u003e at Vinyl Sound or contact our team for home theater system configuration advice and in-store listening appointments.\u003c\/p\u003e","brand":"Adcom","offers":[{"title":"Default Title","offer_id":48918903161084,"sku":"GFA-5705","price":5699.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0116\/1773\/0617\/files\/AdcomGFA-585seStereoPowerAmplifier_1_ddc7e4cc-a2fd-4d80-9665-fa83147658e1.png?v=1775233735"}],"url":"https:\/\/vinylsound.ca\/collections\/adcom-vinyl-sound-toronto-canada\/power-amplifiers.oembed","provider":"Vinyl Sound Canada Inc.","version":"1.0","type":"link"}