Chord Electronics ULTIMA 5 300W Stereo Power Amplifier at Vinyl Sound Toronto Canada

The ULTIMA 5 is a stereo power amplifier from Chord Electronics (Maidstone, Kent, United Kingdom), available at Vinyl Sound in Toronto, Canada. Successor to the legendary SPM 1200 MK II, the ULTIMA 5 incorporates Chord's latest-generation ULTIMA circuit topology, delivering 300 watts RMS per channel into 8 ohms and 500 watts RMS per channel into 4 ohms. Built around 32 proprietary lateral-structure dual-die MOSFETs and dual-feed-forward error-correction, the ULTIMA 5 represents the pinnacle of analogue stereo amplification from one of Britain's most respected high-end audio manufacturers.

ULTIMA Circuit Topology and Dual-Feed-Forward Error-Correction

At the heart of the ULTIMA 5 is Chord Electronics' proprietary ULTIMA amplifier topology, a design philosophy centred on extreme speed, power, and peak output current capability. The dual-feed-forward error-correction system works in concert with an ultra-high-frequency switching power supply to eliminate distortion before it can enter the signal path, rather than correcting it after the fact. The result is a THD figure of just 0.005% and a frequency response extending from 0.5 Hz to 100 kHz at -1dB, far beyond the audible range. This topology allows the ULTIMA 5 to respond to the most demanding dynamic transients with an extraordinarily high peak output current, preserving the timing accuracy and rhythmic integrity that define truly musical reproduction. The ULTIMA 5 is designed to drive virtually any loudspeaker load effortlessly, including those with challenging impedance curves, without compression or loss of composure.

Proprietary MOSFET Output Stage and Aircraft-Grade Aluminium Construction

The ULTIMA 5 employs 32 of Chord Electronics' own proprietary lateral-structure dual-die MOSFET power devices, a design choice that demands exceptionally refined drive circuitry free of sound-degrading components. Unlike conventional bipolar transistor output stages, these lateral-structure MOSFETs offer inherent thermal stability and a more linear transfer characteristic, contributing directly to the amplifier's low distortion and effortless dynamic presentation. The precision CNC-machined fascia, designed by Chord Electronics founder John Franks, is machined from aircraft-grade aluminium and features a reassuringly solid 28 mm thick front panel. A recessed spherical polycarbonate power button illuminates distinctly for standby and full operation modes, while a discreet hidden front-panel switch in the vertical split line enables dimmable lighting. The rear panel provides both balanced XLR and unbalanced RCA inputs alongside high-quality gold-plated speaker terminals, a 12V trigger for system integration, and a C-19 IEC mains inlet.

Key Features

• ULTIMA Amplifier Topology: Chord Electronics' most advanced analogue amplifier architecture, engineered for extreme speed, high peak output current, and vanishingly low distortion across the full audio bandwidth.
• Dual-Feed-Forward Error-Correction: A proprietary Chord Electronics innovation that eliminates distortion proactively within the signal path, resulting in a measured THD of just 0.005%.
• 32 Proprietary Lateral-Structure Dual-Die MOSFETs: Custom-designed output devices offering superior thermal stability and linear performance, enabling effortless drive of even the most demanding loudspeaker loads.
• 300W / 500W Per Channel Output: Delivers 300 watts RMS into 8 ohms and 500 watts RMS into 4 ohms, providing headroom for dynamic music reproduction at any listening level.
• Ultra-High-Frequency Power Supply: Chord Electronics' advanced switching power supply technology minimises interference and provides an extraordinarily clean power foundation for the amplifier stage.
• Balanced and Unbalanced Inputs: Gold-plated XLR balanced and RCA unbalanced inputs ensure compatibility with the widest range of preamplifiers, DACs, and source components.
• 28mm Aircraft-Grade Aluminium Front Panel: Precision CNC-machined from high-grade aluminium billet, delivering a chassis of exceptional rigidity and a striking aesthetic presence.
• 12V Trigger and C-19 IEC Input: Supports full system automation and high-current mains connectivity for installation flexibility.
• Dimmable Front Panel Illumination: A discreet hidden switch in the front panel split line enables adjustment of the LED lighting to suit any listening environment.
• Successor to the SPM 1200 MK II: Builds directly upon the engineering heritage of Chord Electronics' most celebrated stereo power amplifier, extending its performance envelope in every measurable respect.

Technical Specifications

Connections at a Glance

• 1 x pair balanced XLR inputs (gold-plated)
• 1 x pair unbalanced RCA inputs (gold-plated)
• 1 x pair high-current gold-plated speaker terminals
• 1 x 12V trigger input (Chord Electronics auto-start)
• 1 x C-19 IEC mains inlet

Awards and Critical Recognition

• 5 Stars, What Hi-Fi? (United Kingdom) - "If you're after the last word in clarity and insight in a high-end power amplifier, we can't think of a better choice than the Ultima 5"
• Featured Review, Hi-Fi+ (United Kingdom, 2021) - Extensive coverage praising ULTIMA topology for power, speed, and high peak output current

Frequently Asked Questions

What is the Chord Electronics ULTIMA 5?

The Chord Electronics ULTIMA 5 is a 300-watt stereo power amplifier from Chord Electronics, a British high-end audio manufacturer based in Maidstone, Kent, UK. It outputs 300W RMS per channel into 8 ohms and 500W RMS per channel into 4 ohms, and is built around the company's proprietary ULTIMA circuit topology with dual-feed-forward error-correction and 32 lateral-structure dual-die MOSFET output devices. It is the direct successor to the SPM 1200 MK II, long regarded as the definitive Chord Electronics stereo power amplifier.

How does the Chord ULTIMA 5 compare to the Naim NAP 300 or Pass Labs X250.8?

The Chord ULTIMA 5 occupies a similar tier to amplifiers such as the Naim NAP 300 and Pass Labs X250.8, but is distinguished by its proprietary ULTIMA topology and dual-feed-forward error-correction system, which prioritise extraordinary transient speed and peak output current rather than a warm or euphonic character. Where the Naim NAP 300 pairs most naturally within the Naim ecosystem and the Pass Labs X250.8 operates in Class A up to 25 watts for a distinctly smooth and rich presentation, the ULTIMA 5 is engineered for transparency and dynamic agility, making it an ideal partner for resolving sources such as the Chord DAVE DAC. Buyers seeking maximum analytical clarity and effortless dynamic headroom will find the ULTIMA 5 a compelling alternative to both.

Can the Chord ULTIMA 5 drive difficult loudspeaker loads?

Yes, the Chord ULTIMA 5 is specifically engineered to drive difficult loudspeaker loads with confidence. Its 500W RMS output into 4 ohms and extremely high peak output current capability mean it can control even low-impedance, low-sensitivity loudspeakers that would cause lesser amplifiers to compress or struggle. The proprietary lateral-structure dual-die MOSFETs and advanced drive circuitry ensure thermal stability and consistent performance regardless of load impedance, making the ULTIMA 5 a practical choice for partnering with demanding planar magnetic, electrostatic-adjacent, or large floorstander designs.

What is dual-feed-forward error-correction in the Chord ULTIMA 5?

Dual-feed-forward error-correction is Chord Electronics' proprietary distortion-management technology, implemented in the ULTIMA 5 to eliminate errors before they propagate through the amplifier stage rather than applying feedback correction after the fact. Traditional negative feedback loops can introduce time smear and phase anomalies that degrade the sonic presentation; the dual-feed-forward approach avoids these artefacts entirely. The result is a measured THD of 0.005% and a sonic character that What Hi-Fi? described as class-leading for clarity and insight.

What preamplifier or DAC pairs best with the Chord ULTIMA 5?

The Chord ULTIMA 5 pairs exceptionally well with the Chord Electronics DAVE DAC, which provides both volume control and input selection, making a dedicated preamplifier unnecessary in many systems. For those who prefer a dedicated preamplifier, Chord's own ULTIMA Pre 3 is the natural partner, sharing the same ULTIMA topology and chassis aesthetic. The ULTIMA 5 accepts both balanced XLR and unbalanced RCA inputs, ensuring broad compatibility with premium preamplifiers from other manufacturers including Bryston, Benchmark, and Parasound.

What is the difference between the Chord ULTIMA 5 and the Chord SPM 1200 MK II?

The Chord SPM 1200 MK II is the predecessor to the ULTIMA 5 and was widely regarded as the definitive Chord Electronics stereo power amplifier for many years. The ULTIMA 5 supersedes it by implementing the latest-generation ULTIMA circuit topology, which was not available when the SPM 1200 MK II was designed. This brings dual-feed-forward error-correction, the next generation of ultra-high-frequency power supply technology, and a completely new CNC-machined chassis design by John Franks. The ULTIMA 5 delivers higher output power, lower distortion, and significantly greater dynamic headroom than the SPM 1200 MK II while retaining the same fundamental commitment to musicality.

Where can I buy the Chord Electronics ULTIMA 5 in Toronto or Canada?

The Chord Electronics ULTIMA 5 stereo power amplifier is available at Vinyl Sound, an authorised Chord Electronics dealer located in Toronto, Canada. Vinyl Sound offers expert demonstrations, professional system-matching advice, and full manufacturer warranty support for the ULTIMA 5 and the broader Chord Electronics range. Canadian audiophiles can visit or contact Vinyl Sound Toronto to arrange a listening appointment.