Audio Research LS-3br

This trade-in sounds great, even as compared to our reference Bryston! Condition downgraded due to silvering of the knobs (see pics) otherwise in great shape. This model has the remote board (and the ALPS motorized volume potentiometer) but the remote control is missing. If found, it will be forwarded to the buyer at no cost.

Specifications

Frequency
Response ±.5 dB, 2.0 Hz to 100 kHz. -3dB points below 1 Hz and above 200 kHz

Distortion
(THD) Less than .01% at 2V RMS output. (Typically less than .005% in mid-band)

Noise & hum 18 uV RMS maximum THF weighted noise at main output with gain control minimum
(more than 100 dB below 2V RMS output, or 4V balanced output (LS3B))

Gain Main output: 18 dB (optional 10 dB gain reduction)
Tape output: 0 dB
Balanced output (LS3B): 24 dB

Input
Impedance 50k ohms (100k ohms Direct connect)

Output
Impedance 250 ohms main output. 500 ohms balanced (LS3B). Recommended load
60k ohms and 100 pF (20k ohms minimum and 1000 pF maximum)

Maximum
Inputs 20V maximum

Rated
Outputs 2V RMS 2Hz to 100 kHz, all outputs, 60k ohm load (maximum output 35V RMS,
70V RMS balanced (LS3B) at 1/2% THD at 1 kHz into 100k ohms)

Power
Requirements 100-135VAC 60Hz (200-270VAC 50/60Hz) 35 Watts maximum LS3B

Dimensions 19" (48 cm) W x 5 1/4" (13.4 cm) H (standard rack panel) x 10 1/4" (26 cm)
D. Handles extend 1 2/3" (4.1 cm) forward of front panel. Rear chassis
fittings extend 1/2" (1.3 cm)

Weight LS3B: 12 lbs. (5.5 kg) Net; 20 lbs.(9.0 kg) Shipping.