Audio Research Reference 7

Audio Research Reference 7

Stereo Pre-amplifier

Reference, Reimagined

The Reference 7 was created to bring the full measure of Audio Research’s latest work and advancement to a broader expression of the reference preamplifier.

Rather than adapting an existing design, it is derived directly from the same ground-up development that produced the Reference 20.

The objective was clear: to carry forward the essential advances of this new platform while delivering a product of exceptional focus, purity, and musical truth.

Shared Foundations

Central to the Reference 7 is the same mechanical architecture that defines the Reference 20.

A multi-metal, layered chassis manages resonance through controlled energy distribution, while custom suspended, mass-loaded circuit boards protect the integrity of the signal path.

These are core elements of the design, carried forward to preserve the transparency achieved in the flagship platform.

Second only to the REF20, the result is a level of clarity and spatial resolution sheer presence that meaningfully advances the Reference 7 even beyond the prior flagship model.

Precision and Control

The power supply of the Reference 7 is centred on lowering the noise floor and enhancing long-term stability.

Transitioning to solid-state regulation enables exceptionally low noise and increased reliability while key components, including reference-grade output coupling capacitors derived from the flagship design, ensure that signal purity is maintained throughout.

This careful balance of technologies allows the Reference 7 to deliver extraordinary resolution without sacrificing musical coherence or ease.

Rigorous listening and tuning were performed to ensure that REF7 not only resolves detail but renders character that is still supple and textured beyond its predecessor when called for.

In short, it must play the music — not just audit the recording. No tradeoffs accepted.

A New Standard

The Reference 7 is not a refinement of what came before – it is a clear step forward.

By applying the lessons and innovations of an entirely new development platform, it surpasses previous reference designs no matter the demands.

It stands as a complete and uncompromising realisation of modern Audio Research performance.

Audio Research Reference 7 Specifications

Tube Complement: (2) 6H30P dual triodes

Frequency Response: -0.3dB at 10Hz, -0.3dB at 40kHz at rated output (Balanced, 100kΩ load)

Distortion: < 0.03% at 2V RMS BAL Output, 10Hz-80kHz unweighted

Gain: 12dB (Balanced output), 12dB (Single-Ended output)Impedance: 25kΩ (Balanced/SE) Input Impedance; 600Ω (Balanced) and 375Ω (SE) Output Impedance

Output Polarity: Balanced is inverting, SE is inverting

Inputs: 7 inputs (each available in XLR and SE configurations)

Physical & Power Specs

Dimensions: 19″ (48.26 cm) W × 7″ (17.78 cm) H × 17.5″ (44.45 cm) D (including knobs and rear bumpers)

Weight: 33 lbs. (15 kg) Net; 48 lbs. (21.8 kg) Shipping

Power Requirements: 200-250VAC 50/60Hz

Power Consumption: 60W maximum; 4.4W in Standby