The power cord effects how your equipment sounds. Easy to test by using the OEM for six months... Then switch and allow the audiophile power cord burn in. Someone I know designs audio equipment. He makes his own power cords (which I do not own). He explained something to me about how a good power cord acts like a reservoir for electrons... (or, something along those lines). That's why the length is important. I am not going to argue, I hear a difference when I switch power cords. They make a difference. If someone has a system that is not able to let you know the difference? I can not tell you why. All I can report on is what I have been hearing for the last few years. Even my PC sound improved with an audiophile power cord. I like the Pangea top of the line. Not as expensive as many others.
Power Cord Length
Here's one for the electric wizards to kick around. Whilst attending Axpona this weekend I was doing some power cord shopping. At one particular display I was being told by a very well known cable company representative, I'll not mention the name so it doesn't influence any responses, that the rule of thumb is that in order for the pwr cord to be effective it needs to be at least five feet long. This allows the current to be in the cord long enough for it to be effective. Ok, I'm really dumb when it comes to this sort of thing so maybe I said that in the most simpliest of words but that's pretty much how it was explained. Anyone care to elaborate on this good or bad?