Audio Research PH3 Phono Preamplifier

For sale Audio Research PH3 Phono Preamplifier
Very Clean , This unit is real shape with not flaws operationally or physically, include NOS 6922 tubes (3 Sylvania).
Frequency response: ±.15dB of RIAA, 10Hz to 60kHz; 3dB points below 0.5Hz and above 400kHz
Distortion (THD): Less than .005% at .50V RMS 1kHz output
Noise & hum: 0.1µV equivalent input noise, IHF weighted, shorted input (80 dB below 1mV 1kHz input)
Gain: 54dB at 1kHz (MC & MM compatible)
Input impedance: 47K ohms and 90pF Unbalanced. (Provisions for any value below 47K ohms or added input capacitance for matching certain magnetic cartridges.)
Output impedance: 200 ohms Unbalanced.
Recommended load: 50K-100K ohms and 100pF. (10K ohms minimum and 2000pF maximum.)
Maximum inputs: 60mV RMS at 1kHz (240 mV RMS at 10kHz)
Rated outputs : .50V RMS 10Hz to 60kHz, 100K ohm load (output capability is 30V RMS output at 1/2% THD at 1kHz).
Power supplies: Electronically-regulated low and high voltage supplies. Line regulation better than .01%
Tube complement: (3) 6922/E88cc dual triodes
Power requirements: 100-135VAC 60Hz (200-270VAC 50/60Hz) 28 watts maximum. Line fuse 0.6A SLO BLO (0.3A SLO BLO 230V)

Dimensions: 19" (48 cm) W x 5.25" (13.4 cm) H (standard rack panel) x 10.25" (26 cm) D. Handles extend 1.50" (3.8 cm) forward of front panel. Rear chassis fittings extend .75" (2.2 cm)
Weight:10 lbs. (4.5 kg) Net; 19 lbs. (8.6 kg) Shipping.