03-03-2022, 09:10 PM
60 cycle or 120? Good question. I spoke with my amp tech and like most, if not all early Ampegs, everything is grounded to one spot. When he builds an amp, he has about three separate grounds, and his builds are all dead quiet. I played a small bass/guitar jazz gig last night and this thing sounded wonderful; clear but very warm; just what I hoped for. The hum is not an issue at that low volume, but it would be nice to get it running a little quieter. Perhaps in a month or so I'll get it back to my amp tech and he can trace the grounding and experiment. There's a gig coming up with a drummer and a horn section so we'll see how it does cranked up a bit.