This should be fun. I helped clean out the workshop of an old time amp tech yesterday. Along the way I picked up this beast Sovtek Mig 100. I'm looking through it and god what a mess. The tech, Guy Claret, had a patent for power scaling in amps and though I don't know hardly anything about his circuits, it looks like this was one of his experiments. The chassis was found in one part of the basement, the cabinet in another. He did all kinds of crazy mods to this amp. Luckily the original boards are intact and as it's not a complicated circuit, I should be able to reverse engineer it back to where it was originally. It will be a fun project. Luckily it looks like the transformers are all good. That was really my only worry.