Thanks Gonk. I was more concerned about noise coming into play when putting them on the same circuit.

Yeah, I can't see a situation where the 7700 would go to full load for even the smallest moment, at least not with my speakers.

Thinking of leaving the Xbox 360 on the same lamp circuit that it's on now though. If it's dumping enough noise or whatever into the circuit to make the 7700 hum louder, wonder how it's affecting the other equipment as well.