I bought this power amp about a month ago, from a local hoarder. It wasn't cheap (300$) but the fact that I could see it in person and test it beforehand ....and it has great big meters and MosFET, and twin power supply....OK, OK, I couldn't help myself . Anyway, It's all working reasonably well. The only few things are burnt-out bulbs, intermittent leds (4 Ohm - 8 Ohm - BTL) and a non-adjusting idle current for the left channel (oops, that had me worried !) That idle not adjusting turned out to be just a very dirty trimpot, the wiper just made zero contact onto the track...after desoldering to test and a thourough clean with deoxit it's adjusting just fine. This model is older than I first thought, from 1980, soon 40 years old..... The goal is to restore it fully : replace all electrolytic caps, all fusible resistors, most ceramic caps (more likely not needed but as long as I'm in there, and it's cheap enough...). I'll also redo the lighting to leds. And the main and secondary rectifiers will be changed to soft recovery ones. Right now it's pretty much all disassembled (a bit frightening ), and I have all of the parts. For the main caps (8 of them...) I chose Nichicon LS series, upping the capacitance from 5600uF to 6800uf. Next is a good wash for everything apart from the transformers, relays and meters.