OK, I need help. I've read so many posts about ground loops, isolation transformers, and the like, I'm ready to give up this hobby, and try out painting...I bet there's no buzz when you're sitting next to pond painting a landscape (unless of course you've got a bumblebee dancing around your ear)...but I digress... Here's my situation. I've got the TV, DVD, VCR, DirecTV, PS2, Denon 3803 (as pre/pro), and Parasound 1205A running through a Panamax 5300. I have a buzz, yes a buzz--not a hiss, not a hum--in all 5 of my Klipsch speakers. I only have this buzz if the amp is plugged in--it doesn't even need to be on. I tried unplugging each component individually, and the only thing that eliminated the buzz was unplugging the amp. It was really easy to isolate since everything is plugged into the Panamax. If I run the speaker wire through the Denon using it's internal amps, and leave the Parasound off and unplugged, no buzz. As soon as I plug the amp in...buzz. I eveb tried the Parasound in a different outlet, and I still get the buzz. I'm not sure what do to now. I'd appreciate any suggestions you've got, since, to be honest, I suck at painting.