Well, I bought a PF500 used from Guitar Center. It went out 3 out of 3 shows. Taken back for repair every time. The last time I got it back literally EVERYTHING had been replaced. Essentially a new amp minus the casing. And guess what? It died. It's going in the trash. I will never buy a newer Ampeg model again. The repairman told me that he sees a lot of Class D amps. I should have just gotten an older USA SVT3pro or something. Dangit. No offense to anyone, but I had my doubts and I was right. It felt like a cheap internet modem and went out with no abuse.
