Yes, it never acted up or behaved in any otherwise unusual fashion with any of the other amps listed. Thanks for the grounding info. I’ll look to see if I can find one of those. Only trouble I’ve truly had was a very long time ago (2004), with what might have been a defective amp to begin with. A new old stock / shop worn Peavy Classic 30, which I got at a price so low, you’d have said it was a bargain were it used. The reverb on that one sounded like a rocket taking off into outer space the moment you started to turn the dial up. The sales guy just said it’s the coil inside overheating. But the guitar I’d had then—the first of three of these (& my personal fave.)—was a G&L ASAT Special (w/their style P-90’s). Being that I was playing primarily high gain electrically at the time, everything was about as far from fine as one could imagine. When I brought it in, they (now closed for over a decade) said that the gain was maxing out as the preamp or distortion tubes were being over taxed, or something like that & that since it was under warranty, they could ship it off to MO or wherever, but that then you may not see if for several months or more. Also the feedback from the distorted channel itself, coupled with my guitar was quite intolerable even for me at the time. I’d come to find other amp combination s that worked significantly better with that guitar, and also years later, when auditioning / demoing a G&L Legacy, they had one of the same Peavey’s: no noise, on any of the previously mentioned accounts. Through the AC15 they’d had in their private space to try things out was quite fine as well. So much so (it was not for sale), I’d wondered if they’d done something to it — “tricked it out; or modded” something else I’ve never done. Anyway, back to my current one at hand, no idea if it’s the cable. Yes it’s one of those that you can swap out interchangeably, so once stores reopen around here again I can try that. I haven’t checked the dials all being a zero; but I do know that once it’s on, if you turn them all down it doesn’t really seem to help much. The reverb is already all the way off. EQ’s at noon (haven’t even gotten to that point of adjusting) & like I said, it sounds way worse with the OD (or preamp tube) on. I hadn’t expected as much feedback on this in terms of things that could and would or should be potentially wrong. Maybe this is why they haven’t responded. Or their amp tech dept is out. But even then, you’d think they’d respond from a customer service end with such info (which is what one of their messages said back at the start of the year when I was exploring mics). Oh, well, cost was minimal financially. But the pain in the neck was probably not near well worth it...