Does anyone have a fairly high powered power amp near a Plasma TV? I have a Emotiva 200W x 5 channel power amp, the issue I'm having is that I get feedback into my amp from the Plasma TV. Even when the volume is at 0 I get a mild hum through my speakers. If I unplug the Plasma the hum goes away. Has anyone experienced this? I'm not sure if its RF waves traveling through the air or if its back feeding through the wiring in my house. I was thinking about buying a UPS that has a line conditioner built in, but I didn't want to spend the money if it wouldn't help.