audiphile power cords

I put a pair of 'upgraded' power cords on a pair of electrosstatic speakers once for a friend and all of a sudden, when the refrigerator cycled on, he no longer heard it through the speakers. Not only do better power cords do a better job of delivering power to your coponent - they do a better job at keeping things out.

All you guys have to do is listen with a standard PC and try something good. You need to be deaf to not hear it. Or, I guess, if you don't hear it, your rig is not revealing enough.