This LS2 was upgraded to a Mkii by ARC, way back when it was offered by them. It powers on, sound was distorted. Tried replacing the tube. Was put aside for over a year, no further testing or diagnosis was done. Has not been turned on or tested since then. Just powered for photo. You are bidding on a broken product. It is complete, no parts missing. There are some minor scratches, and imperfections in the top cover. See photos. Sold as is, no return.

The Audio Research LS2MkII Line Stage Pre-Amplifier is a high-quality audio device manufactured in the United States. This pre-amp, with its sleek black design, is designed to enhance the audio quality of your home audio system. The model Audio Research LS2MkII is known for its power and performance, making it a reliable choice for audio enthusiasts looking to elevate their sound experience. Although it powers on, it does not function properly as is, this pre-amp is a great option for those looking to bring new life to their audio setup.