Update:
Amp is bad, sadly for me. Electronics guy just contacted me. He said it is a factory defect that somehow made it past inspection - a fracture in the through-hole board (something along those lines).
He also said likely the seller was aware of it as it would have come up at some time during playing, and it will get worse over time. It's in the pre-amp, power side of amp is ok so he suggested maybe getting another pre-amp.
Obv I'm choked, but I can't do much about it. I did contact the seller.
I'm not an idiot with these things I did have him play the amp while I was there and it sounded fine, but the issue doesn't really manifest until the amp heats up a bit.
Expensive lesson learned.
Amp is bad, sadly for me. Electronics guy just contacted me. He said it is a factory defect that somehow made it past inspection - a fracture in the through-hole board (something along those lines).
He also said likely the seller was aware of it as it would have come up at some time during playing, and it will get worse over time. It's in the pre-amp, power side of amp is ok so he suggested maybe getting another pre-amp.
Obv I'm choked, but I can't do much about it. I did contact the seller.
I'm not an idiot with these things I did have him play the amp while I was there and it sounded fine, but the issue doesn't really manifest until the amp heats up a bit.
Expensive lesson learned.