audio research
LS22

Description
Tube stereo line stage.

Introduced
1996

Discontinued
1997

Revisions
-

Options
Remote control ($500)

MSRP (US new retail)
$3,995

Specifications

Frequency response ±.5dB, 1.5Hz to 100kHz-3dB points below 0.1Hz and above 400kHz.
Distortion (THD) Less than .010% at 2V RMS output.
Noise & hum 12µV RMS IHF weighted balalanced noise (104dB below 2V RMS output)
Gain Main output: 18.3dB balanced, 12.7dB unbalanced.
Tape output: 0dB
Input impedance 200K ohms balanced, 100K ohms unbalanced
Output impedance 400 ohms balanced, 200 ohms unbalanced main (2), 20K ohms minimum load and 2000pF maximum capacitance.
Output polarity  
Maximum inputs 20V
Rated outputs 2V RMS 1Hz to 100kHz into 100 Ohm balanced (max 35V RMS at less than 0.5% THD @ 1kHz)
Power supplies Power supply regualtion: > .01%
Tube complement (8) 6922/E88cc dual triode. (Vacuum tube audio circuit, solid-state power supply.)
Power requirements 100-135VAC 60Hz (200-270VAC 50/60Hz) 90 watts maximum.
Other  
Dimensions 19" (48 cm) W x 5¼" (13.4 cm) H (standard rack panel) x 11¾" (29.8 cm) D. Handles extend 1½" (3.8 cm) forward of the front panel. Rear chassis fittings extend 7/8" (2.3 cm).
Weight 11.6 lbs. (5.3 kg) Net; 20 lbs. (9.1 kg) Shipping

Reviews

Vol. 19 No. 11, Vol. 19 No. 12

Pictures