Audio Research Reference Phono 10

The Reference Phono 10 is Audio Research’s flagship phono preamplifier, designed to deliver extraordinary analog realism and musical immersion. Its fully balanced, dual-mono, pure Class-A design uses separate power supplies and extensive tube regulation for exceptional dynamics, detail and low noise. Eight 6H30 tubes and ultra-low-noise FETs provide remarkable clarity, holographic imaging and lifelike musical presence. Supporting multiple gain settings, cartridge loading options and RIAA, Columbia, and Decca equalization curves, the REF Phono 10 offers extensive flexibility for vinyl enthusiasts. Remote-controlled and engineered without feedback, it sets a new benchmark for high-end analog playback performance.

Technical Specifications:

Frequency Response: ± .2dB of RIAA, 10Hz to 60kHz; 3dB points below 0.3Hz and above 300kHz

Distortion: Less than .002% at 1.0V RMS 1kHz output

Gain: Selectable 51dB (Low), 74dB (High) at1kHz BAL; 45dB (Low), 68dB (High) at1kHz SE. (MC & MM compatible)

Buttons: Front (2) Power, Mute.

Input Impedance: 47K ohms and 100pF SE. Selectable loads 1000, 500, 200, 100, 50 ohms and Custom

Output Impedance: 200 ohms SE, 400 ohms balanced. Recommended load 50K-100K ohms and 100pF. (10K ohms minimum and 2000pF maximum).

Output Polarity: Non-inverting

Phono Equalization: (Selectable) RIAA, Columbia, Decca

Maximum Input: 250mV RMS at 1kHz (680 mV RMS at10kHz)

Rated Outputs: 0.5V RMS 10Hz to 20kHz, 100K ohm load (output capability is 80V RMS BAL output at 1/2% THD at1kHz, 40V SE)

Power Supplies: Electronically regulated low and high voltage supplies. Automatic 40 sec. warm-up/brown-out mute. Line regulation better than .01%.

Noise: 0.22uV equivalent input noise, IHF weighted, shorted(Low Gain) input (73 dB below 1mV 1kHz input). 0.055uV equivalent input noise (High Gain) (65dB below 0.1mV 1kHz input).

Tube Complement: (8)-6H30P dual triodes, plus (2 each) 6550C and 6H30P in power supply

Power Requirements: 100-135VAC 60Hz (200-270VAC 50/60Hz) 235 watts maximum. Standby 0.8 watts.

Dimensions:

Audio Chassis: 22 lbs. (10 kg)
Net; 34 lbs. (15.5 kg) Shipping.
Power Supply Chassis: 35 lbs. (15.9 kg)
Net; 43 lbs. (19.5 kg) Shipping.