Audio Research LS22 - All Tube Preamplifier


Balanced and single ended for ALL inputs and outputs!

Uses no less than 6 tubes for the pre-stages!

Great preamp from the mid 1990's when ARC was still making simple yet great sounding gear. No gimmicks or extra features that you won't end up using.

A remote was optional at the time, but we are in the process of sourcing one. Please check in with us for the status.

Click here for a PDF copy of the Audio Research LS22 Owner's Manual

See our photos for a full listing specifications on this piece.

Our Testing Process for Preamplifiers (All) at SkyFi:

We start with a visual inspection of all internal components to make sure there are no signs of stress or aging. Capacitors are checked for telltale sings of bulging or leaking, resistors are checked for signs of overheating or cracking, and transistors are checked for signs of stress or damage. Special attention is paid to the power supply which is the most common source of failure for preamps. We then power up the unit and run a simple 1k sine wave while monitoring the low voltage output on an oscilloscope for signs of distortion or noise to get a baseline.

At this point we will lubricate and clean all switches and potentiometers (that are not sealed) with a high quality contact cleaner, and then re-test all functions for any signs of noise or scratching.

Final testing involves putting actual music through the preamplifier We have learned over time that some issues are only noticeable to a trained ear while listening to a familiar source material. Our test bench has reference vintage Kef speakers that we are super familiar with which will quickly reveal any discrepancies. Some preamps will then move into the listening room where they will be tested with our in-house reference system.  

Please click here for detailed specifics regarding our specialized packing process that separates us from the rest.



Original Box







Yes - Power

Physical Condition


Working Condition


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