Audio Research Reference Phono High Definition Vacuum Tube Preamplifier

Description: Super nice Audio Research Reference Phono High Definition Vacuum Tube Preamplifier. Specs from the literature: Frequency Response: ± .15dB of RIAA, 10Hz to 60kHz; 3dB points below 1.0Hz and above 250kHz Distortion: .005% at 0.5V RMS 1kHz output Noise & Hum: 0.56µV equivalent input noise, IHF weighted, shorted (Low Gain) input (65 dB below 1mV 1kHz input). 0.055µV equivalent input noise (High Gain) (65dB below 0.1mV 1kHz input) Gain: Selectable 48dB (Low), 69dB (High) at 1kHz (MC & MM compatible) Input Impedance: 47K ohms and 180pF Unbalanced (Low Gain), 280 ohms Unbalanced (High Gain). (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.) Output Polarity: - Maximum Inputs: 100mV RMS at 1kHz (240 mV RMS at 10kHz) Rated Outputs: 0.5V 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: (11) 6922/E88CC dual triode, plus (1 each) 5AR4, 6L6GC, 6922 in power supply Power Requirements: 100-135VAC 60Hz (200-270VAC 50/60Hz) 120 watts maximum. 50W standby. Line fuse 3A SLO BLO (T2A SLO BLO 230V) Other: Switches: Front (4) Power, Standby, Mono, Mute. Rear (1) Gain Dimensions: 19" (48 cm) W x 7" (17.8 cm) H (standard rack panel) x 15½" (39.4 cm) D. Handles extend 1½" (3.8 cm) forward of front panel Weight: 28 lbs. (12.7 kg) Net; 42 lbs. (19.1 kg) Shipping. Comes as pictured. Shipping insurance and signature. Confirmation will be $75 in the lowers 48 states.

Price: 4500 USD

Location: Jerseyville, Illinois

End Time: 2024-09-21T13:22:01.000Z

Shipping Cost: 75 USD