I am selling my Audio Research Ref 5 Preamplifier. This is one of the finest if not the finest preamplifier made today. It's in perfect condition sonically and cosmetically. It has been babied since new and features extremely low hours. The buyer will not be disappointed. Buyer pays for shipping and insurance and if paying via PayPal, please add 2.9%. Thanks for looking and please do not hesitate to contact me should you have any questions.
All sales out of California are State Sales Tax exempt.
California State Sales Tax of 8.75% applies for items picked up or shipped to a California address.
From Audio Research's Website:
FREQUENCY RESPONSE: +0 -3dB 0.2Hz to 200kHz at rated output. (BALANCED, 200k ohms load.)
DISTORTION: Less than .01% at 2V RMS Balanced output.
GAIN: Main output (SE or BAL input): 12dB Balanced output, 6dB Single Ended output. Tape output: 0dB. (Processor input: 0dB Balanced.)
INPUT IMPEDANCE: 120K ohms Balanced, 300K ohms SE, Inputs (7): CD, TUNER, VIDEO, PHONO, AUX1, AUX2, PROCESSOR. (XLR and RCA connectors).
OUTPUT IMPEDANCE: 600 ohms Balanced, 300 ohms SE main (2), 20K ohms minimum load and 2000pF maximum capacitance. Outputs (3): 2 main, 1 tape (XLR and RCA connectors).
OUTPUT POLARITY: Non-inverting.
MAXIMUM INPUT: 20V RMS maximum Balanced, (10V RMS SE).
RATED OUTPUTS: 2V RMS (1V RMS SE) into 200K ohm balanced load (maximum balanced output capability is 30V RMS at less than 0.5% THD at 1kHz).
CROSSTALK: -80DB or better at 1kHz and 10kHz.
CONTROLS: Volume (104 steps), Select Input. Push Buttons: Power, Proc, BAL/SE, Mono, Invert, Mute.
POWER SUPPLIES: Electronically regulated low and high voltage supplies. Automatic 40 sec. warm-up/brown-out mute. Line regulation better than .01%.
NOISE: 1.7uV RMS residual IHF weighted balanced equivalent input noise with volume at 1 (109dB below 2V RMS output.)
TUBE COMPLEMENT: (4) -6H30P dual triodes, plus (1 each) 6550C and 6H30P in power supply.
POWER REQUIREMENTS: 100-135VAC 60Hz (200-270VAC 50/60Hz) 130 watts.
DIMENSIONS: 19" (48 cm) W x 7" (17.8 cm) H (standard panel) x 15.5" (39.4 cm) D. Handles extend 1.5" (3.8 cm) forward of the front panel.
WEIGHT: 30.4 lbs. (13.9 kg) Net; 41.6 lbs. (19 kg) Shipping.
Specifications subject to change without notice.