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Audio Research

Audio Research LS22 Stereo Tube Preamplifier

Audio Research LS22 Stereo Tube Preamplifier

Regular price $1,450.00 USD
Regular price Sale price $1,450.00 USD
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Description :
The Audio Research LS22 preamplifier has great flexibility and offers an option of either balanced XLR or unbalanced RCA connections for all inputs and two sets of outputs. It has a simple signal path and a large, easily accessible circuit board. The circuit board is of high quality and has heavy and wide traces. This helps with modifications because less damage to the traces is likely to occur when removing components such as capacitors or when soldering in new parts. The Audio Research LS22 was the last ARC line stage to be pure tube in the audio signal path, use a normal volume control, and 6922 tubes.


The Audio Research LS22 is a very transparent amplifier that zooms into the vital elements of the music. It is also smooth and clean, and removes excessive sibilance on some vocals. The sense of the presence of a performer in the room is startling on some recordings. The speed and soundstage is remarkable and it transports the listener to the front of the center stage. It does not have any tonal coloration of any kind, but there is a slight tube "sheen" to keen ears. The Audio Research LS22 preamplifier brings a richer and clearer sound that will suit music lovers to create a memorable musical experience.

Specifications :
Frequency Response........................+/- 0.5dB, 1.5Hz to 100kHz 
                              ........................-3dB points below 0.1Hz and above 400kHz
Total Harmonic Distortion..................Less than 0.01% at 2V RMS output
Noise And Hum...............................12microvolts RMS IHF weighted balanced 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
                         .............................20K ohms min load and 2000pF max capacitance
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 Supply Regulation..................>0.01%
Tube Complement............................8 x 6922/E88cc dual triode. 
                         .............................Vacuum tube audio circuit, solid-state power supply
Power Requirements........................100 to 135 VAC. 60Hz (200 to 270 VAC 50/60Hz) 90 watts max
Dimensions(w x d x h)......................48.5 x 35.5 x 14 cm
Weight............................................8kg


Miscellaneous :
Matching.........................................Audio Research CD2 Cd Player
             .........................................Audio Research VT150SE Power Amplifier
XLR Inputs.......................................Yes
XLR Outputs....................................Yes
Made In...........................................USA
Condition.........................................9/10


Product Information :
http://www.arcdb.ws/LS22/LS22.html
http://www.10audio.com/arc_ls22.htm (Available Mods and Upgrades)
http://www.hifiengine.com/library/audio-research/ls-22.shtml (Manual, requires registration)


Reviews :
http://www.audioreview.com/cat/amplification/preamplifiers/audio-research/ls22/prd_118168_1591crx.aspx
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