Here is the issue: power cords are part of the circuit path. The reason? GROUND. The ground signal is part of the audio chain and if it gets mucked up so will everything else.
Power cords at ridiculous prices?
Seems to me there's no shortage of "black magic" out there, people spending $1000 on power cords? If the equipment you own is well designed with hefty power supplies and adequate capacitive filtering on-board, the grunge from the AC lines will be dealt with. I'm not discounting upgrading stock cords with something of a little better quality, but it seems to me spending the equivalent of a mortgage payment, on a piece of wire, makes us audiophiles the subject of ridicule by any reasonable person. Okay, I'll stand back now and take my lumps....