I have a Zapco DC360.4 amp that stopped working for me the last time I hooked up a a PC to it to run the Zapco software. It still powers up -- I'm just not hearing any audio through it.
I am honestly not sure if there is a legitimate problem with the amp or if it's a driver issue with the PC.
I've pulled the amp out. It's about 2.5 years old. It's never been abused or even pushed at all.
Could be a good deal for someone...
$200 + $25 shipping.