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
Other than room reflections, etc. if you like the sound of the L-100's why not try and find a single one for the center channel and then have all three refurbished at once? I don't do HT myself but have listened to some otherwise nice setups in which the center channel did not match on vocals very well.
Jhunter has received the test power cords from Purist Audio, and this morning I emailed him to be certain that they arrived in good condition. I am hoping that before too long, Jordan will have a complete report.
Mmccoy, your skepticism is well-placed. The expensive power cables are audio fashion, not audio performance. The purpose of a power cord is to transfer AC power from the outlet to the audio device. A very simple commodity-grade task, but there's little profit margin in commodity-grade simplicity. Thus, the hype, the snake oil, and the megabuck power cables.
Just shut up 7! It's been so nice to have you gone for the past month. I was hoping when you came back you might have tried to learn before opening your mouth. Guess I was wrong.