Harman Kardon 825 Vintage Stereo Preamplifier / Preamp AS-IS

This preamp is being offered as-is. It is working fully, but the controls need a good cleaning before it can be put into daily use. We tried spraying some deox into the controls from the outside, but that only relieved the symptoms partially. It needs to be disassembled and cleaned thoroughly. Offering as-is for parts / repair.