How can power cords make a difference?


I am trying to understand why power cords can make a difference.

It makes sense to me that interconnects and speaker cables make a difference. They are dealing with a complex signal that contains numerous frequencies at various phases and amplitudes. Any change in these parameters should affect the sound.

A power cord is ideally dealing with only a single frequency. If the explanation is RF rejection, then an AC regeneration device like PS Audio’s should make these cords unnecessary. I suppose it could be the capacitance of these cables offering some power factor correction since the transformer is an inductive load.

The purpose of my post is not to start a war between the “I hear what I hear so it must be so” camp and the “you’re crazy and wasting your money,” advocates. I am looking for reasons. I am hoping that someone can offer some valid scientific explanations or point me toward sources of this information. Thanks.
bruce1483
It doesn't matter how many reasons you can list why they shouldn't make a difference. If there is only a single reason why they do, then they do and the reasons why they shouldn't are meaningless.

My wife shouldn't care which way I fold my underwear in the drawer, but she does.
Have you checked the PS Audio website (www.psaudio.com)? I can't explain the physics behind it, but perhaps the guys who developed the Power Plant can.