Audio Research Reference Phono 10

The Reference Phono 10 is Audio Research's flagship phono stage, a two-chassis design with a separate power supply chassis and a true dual-mono signal path, each channel fully separate from power supply through audio circuit.

It is a discrete, pure Class A, zero-feedback design that uses high-gain, low-noise FETs rather than transformers, with eight 6H30 tubes split four per channel and twenty stages of electronic regulation.

It offers two independently configurable inputs, switchable 51dB or 74dB gain, seven loading options, and support for RIAA, Columbia, and Decca equalization curves.

Specifications

• Tubes: eight 6H30P dual-triode (four per channel, audio), plus two 6550C and two 6H30P in the power supply
• Gain: MC and MM compatible, low gain 51dB balanced/45dB single-ended, high gain 74dB balanced/68dB single-ended
• Loading: 7 switchable options (1000/500/200/100/50 ohms plus factory custom)
• THD: under 0.002% at 1.0V RMS, 1kHz
• Inputs: 2 independently configurable RCA sets
• Outputs: balanced, output impedance 200 ohms single-ended/400 ohms balanced
• Weight: audio chassis 22 lbs, power supply chassis 35 lbs