OEM manual. Not sure whether page 12 is missing or not. Any defects I notice will be captured in the pictures or explained below.
Item Tag: Audio Research
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Audio Research LS22 All-Tube Preamplifier with 6 RCA & XLR Inputs
The LS22 From Audio Research is a no-nonsense great sounding tube preamplifier that’s made right here in the US. Included with the LS22 is the original owners manual. Having a whopping six XLR balanced stereo inputs is a rarity, especially on a preamp from the 1990’s.