Technics SU-G700M2 Grand Class Integrated Amplifier at Vinyl Sound Toronto Canada

The Technics SU-G700M2 is a Grand Class stereo integrated amplifier from Technics (Osaka, Japan), available at Vinyl Sound in Toronto, Canada. Delivering 70 watts per channel into 8 ohms and 140 watts per channel into 4 ohms, the SU-G700M2 brings three technologies from the Reference Class SU-R1000 into the Grand Class: the JENO Engine for jitter elimination and noise-shaping optimisation, Load Adaptive Phase Calibration for speaker-matched output correction, and the Advanced Speed Silent Power Supply with GaN FET and SiC SBD switching devices operating at 400 kHz. It adds MM and MC phono input with four-level gain adjustment, a Class AA headphone amplifier, USB audio up to DSD 11.2 MHz and PCM 384 kHz, and a three-section chassis construction with steel and aluminium shielding throughout.

JENO Engine and Reference Class Digital Amplification

The SU-G700M2's power amplifier section uses full digital amplification via the JENO Engine — Jitter Elimination and Noise-shaping Optimisation — developed from the same design concept as the Reference Class SU-R1000. An original jitter reduction circuit eliminates jitter across the entire audible frequency range, while a high-precision PWM conversion circuit optimises noise-shaping speed, degree, and quantisation number to convert high-resolution audio data to PWM signals without loss across the full dynamic range. The result is natural, finely detailed sound reproduction that resolves the delicate nuances of any recording without the digital harshness associated with earlier switching amplifier designs.

Load Adaptive Phase Calibration (LAPC)

Conventional amplifiers improve amplitude characteristics through negative feedback but cannot correct phase characteristics, which vary with speaker impedance across the frequency range. The SU-G700M2's LAPC system measures the frequency amplitude and phase characteristics of the amplifier with the connected speakers in place and applies a speaker impedance adaptive optimisation algorithm that corrects both amplitude and phase simultaneously to achieve an ideal impulse response. This results in flattened frequency characteristics that no conventional amplifier can achieve, and a sound with richer spatial expression and tighter imaging than the same speakers would produce from an uncalibrated amplifier.

Advanced Speed Silent Power Supply with GaN FET and SiC SBD

The SU-G700M2 uses the same Advanced Speed Silent Power Supply technology as the Reference Class SU-R1000. The switching frequency has been raised from the conventional 100 kHz band to 400 kHz, eliminating the modulation noise caused by variable-frequency switching and ensuring stable voltage and current delivery. The same GaN FET (Gallium Nitride Field Effect Transistor) and SiC SBD (Silicon Carbide Schottky Barrier Diode) switching devices used in the SU-R1000 are installed, maximising the performance of the high-speed switching system. A Super Low Noise Regulator in the output stage prevents high-frequency noise contamination and compensates for any regulation decrease caused by the fixed switching frequency.

Key Features

• 70 Wpc (8 Ω) / 140 Wpc (4 Ω): Full digital amplification with JENO Engine; drives 4 to 16-ohm loads
• JENO Engine: Jitter elimination across full audible frequency range; high-precision PWM conversion preserving full dynamic range of high-resolution sources
• Load Adaptive Phase Calibration (LAPC): Measures connected speaker's amplitude and phase characteristics; applies digital correction for ideal impulse response; unique to Technics
• Advanced Speed Silent Power Supply (400 kHz, GaN FET, SiC SBD): Same technology as Reference Class SU-R1000; fixed switching frequency eliminates modulation noise; Super Low Noise Regulator prevents high-frequency contamination
• Low-Noise MM and MC Phono Input: Differential parallel FET configuration in the first stage for minimum noise; four-level gain adjustment to match any MM or MC cartridge output level
• Class AA Headphone Amplifier: Separate voltage and current amplification circuits; high-grade operational amplifiers for voltage gain and high-current op-amp for current gain; high-precision conversion of JENO PWM signal to analogue; low distortion across all headphone impedances
• USB Audio up to DSD 11.2 MHz and PCM 384 kHz: Asynchronous USB-B input; supports PCM at 32, 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384 kHz / 16, 24, 32-bit; DSD at 2.8, 5.6, 11.2 MHz
• Four Digital Inputs: 2 x Optical, 2 x Coaxial for any digital source combination
• Three-Section Chassis Construction: Circuit blocks partitioned by signal level — micro-signal input, intermediate, and high-current output sections separated to eliminate inter-circuit interference
• Two-Layer Bottom Chassis: 1.2 mm and 2 mm steel plates combined; 1.6 mm steel top panel; 7 mm aluminium front panel; improved vibration damping throughout
• PRE OUT: Connects to a separate power amplifier for bi-amplification or system expansion
• MAIN IN: Accepts signal from an external preamplifier, bypassing the SU-G700M2's preamp section
• 6.3mm Headphone Output
• LINE OUT: Fixed-level output for recording or connection to additional equipment

Technical Specifications

Frequently Asked Questions

What is the Technics SU-G700M2?

The Technics SU-G700M2 is a Grand Class integrated amplifier delivering 70 watts per channel into 8 ohms and 140 watts into 4 ohms. It features the JENO Engine for full digital amplification with jitter elimination, Load Adaptive Phase Calibration for speaker-matched phase and amplitude correction, the Advanced Speed Silent Power Supply with GaN FET and SiC SBD from the Reference Class SU-R1000, MM and MC phono input with four-level gain adjustment, a Class AA headphone amplifier, and USB audio support up to DSD 11.2 MHz and PCM 384 kHz.

What is the difference between the Technics SU-G700M2 and the SU-R1000?

The SU-R1000 is the Reference Class flagship at 150 watts per channel into 8 ohms, adding Active Distortion Cancelling Technology, four independent power supply units, the Intelligent Phono EQ with Crosstalk Canceller and PHONO Response Optimiser with a bundled Calibration Record, a balanced XLR MC phono input with Neutrik connectors, two USB-B inputs, USB audio up to DSD 22.4 MHz, a double-deck separated inner chassis with cast iron insulators, and the large dual-needle VU meters and solid aluminium machined controls of the Reference Class design. The SU-G700M2 shares the JENO Engine, LAPC, and Advanced Speed Silent Power Supply with the SU-R1000 at a more accessible price and in a more compact chassis.

What is Load Adaptive Phase Calibration (LAPC) and how do I use it?

LAPC measures the frequency amplitude and phase characteristics of the SU-G700M2 with the connected speakers in place and applies digital correction to achieve an ideal impulse response calibrated to those specific speakers. It is activated from the front panel or remote control after the speakers are connected and positioned. The calibration process takes only a short time and significantly improves imaging precision and soundstage width compared to the uncalibrated default setting.

Does the Technics SU-G700M2 support MC cartridges?

Yes. The SU-G700M2's phono input supports both MM and MC cartridges via a single RCA input, using a differential parallel FET first stage for low noise with MC cartridges and four-level gain adjustment to optimise the gain for any cartridge output level from high-output MM down to low-output MC.

What makes the Class AA headphone amplifier in the SU-G700M2 different?

The Class AA headphone amplifier uses separate circuits for voltage amplification and current amplification of the audio signal, with a high-grade operational amplifier for voltage gain and a high-current operational amplifier for current delivery. The JENO Engine's PWM output is converted to analogue with high precision before the headphone stage. This architecture achieves low distortion and wide frequency range reproduction regardless of headphone impedance, making the SU-G700M2 a capable headphone amplifier as well as a speaker amplifier.

Does the Technics SU-G700M2 support Roon or network streaming?

No. The SU-G700M2 does not include network streaming or Roon Ready capability. It accepts digital audio via USB-B, optical, and coaxial inputs only. For network streaming, a separate streaming source connected to one of these digital inputs would be required. Contact Vinyl Sound Toronto for streaming source recommendations compatible with the SU-G700M2.

Where can I buy the Technics SU-G700M2 in Toronto or Canada?

The Technics SU-G700M2 is available at Vinyl Sound in Toronto, Canada, an authorised Technics dealer. Contact us to arrange an audition or to discuss building a complete system around the SU-G700M2.