OK, I know what's going on. I just don't know how to fix it. I'm trying to hook up my computer (3 prong plug, kinda grounded) to my second receiver (2 prong plug, at least it's plugged into the same outlet as the computer, I think). I get the dreaded buzz/hum thing. My headphone amp (2 prong plug, same outlet as computer) doesn't have the problem, but does pass it to the receiver if I hook it up with a 1/4 plug to 1/8 plug to RCA chain of adapters. Also happens with the KVM+sound thing I've got. If I hook up an iPod to the cable, no hum.
Any thoughts?
