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
70242.241. So are you inferring that the stock power cord on my new Sony 9000 ES, which was an 18 gauge, is sufficient enough that replacing it with a high quality power cord ( 12 gauge?) from Purist Audio will not affect the performance?
Albert - There is literally no conceivable reason why your Sony DVD player should benefit from a 12 gauge line cord. If your Purist cord does improve the sound it is because of some phenomenon outside the known laws of science. It is very similar to someone claiming that their car runs better when the gas is pumped thru certain brands of pump nozzels.
Look whos telling who what. Stevemj, when you have half the knowledge not to mention the equipment of Albertporter maybe someone will listen to you. Please tell me, are you saying Albertporter is hearing something that isnt there? Were you there? Is he lying to us? Your gas pump analogy is pathetic. So are your posts.
Stevenmj, I think a more accurate analogy would be to say that my car ran better because the fuel line size was increased, and therefore provided less resistance and lag time in supplying the energy source to the engine under high demand.

Your analogy (at best) would only represents the amount of time required to fill the fuel tank. And of course, this has no affect on final performance, unless there was an engine that used energy faster than it could be pumped in.