preamplifier repair

I've just repaired this lovely McIntosh Laboratories C220 preamplifier. This high-quality preamp fell victim to a growing problem - modern Pb-free production processes. The McIntosh C220 preamplifier is a hybrid tube/transistor based preamplifier, featuring a phono preamp and microprocessor control. It's a well-made unit, though not like the McIntosh of…