Yesterday I snagged a sweet little mid 70's Harman Kardon Two-Thirty receiver in very clean shape and it works. Only issue is distortion. If I set the bass control at anywhere below about 12 o:clock (50%) and keep the volume moderate, it's listenable, but still kind of rough..... but increasing the bass and volume brings in massive distortion. The amp doesn't hum badly, and the big filter caps haven't leaked or exploded, although I do plan on replacing them, I DON'T think that's where the problem lies. Anyone to suggest possible places to look? As you know, this is a SS unit. My skills are more along the tube/point to point wiring, so I hope the solution is more capacitor related than transistor related. But hey... I'm open to suggestions. I've replaced power transistors before, but it always makes me nervous. Thanks.