eBay

Audio Research Ref 10 Stereo Phono Stage Preamplifier

MSRP: $42,000

Color: Silver

This preamplifier is in excellent condition and functions flawlessly. This is one of the best phono preamplifiers on the market and it sounds absolutely phenomenal. This preamplifier shows 4816 hours on the unit as shown in the pictures though the 6550s tubes are brand new with zero hours. It includes new replacement packaging, remote, user manual, tubes, chassis interconnects, and power cord. There are a few very minor blemishes on the unit as shown in the photos though nothing that affects the unit in any way. Do not miss the chance to own this amazing preamplifier at an unbeatable price.

Electronic Specifications

Electronic 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.
PHONO EQUALIZATION
(Selectable) RIAA, Columbia, Decca.
OUTPUT POLARITY Non inverting.
OUTPUT IMPEDANCE
200 ohms SE, 400 ohms balanced. Recommended load 50K-100K ohms and 100pF. (10K ohms minimum and 2000pF maximum).
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
Width 19” (48 cm); Height 7” (17.8 cm) (standard rack panel).

Check out my other listings.

Feel free to ask any questions.

I ship items only to buyers with signature required on items above $750.

NOTE: Returns not accepted.