Yeah, I'm going with Wid. Let's see... you've blown up an H/K, a Denon (right?), a Marantz, a Yamaha (or is that one ok?)... that leaves Rotel, Outlaw, NAD, Parasound, and some other esoteric brands.
Or you could try Sony, maybe.
EDIT: Yes, I know they've blown up on you, not you've blown them up. Funnier my way.