Power cord? Why?


I see a lot of posts regarding power cords. I would like to know what sonic difference they actually make. Could anybody explain this in a simple way?

Thank you
cfmartind362
Eldartford - you can buy hookup wire at: alliedelec.com

Copper quality matters, whether it's power IC's or speaker cables.
Iasi - I have had the Innersound ESL amp in my system for a couple of weeks. I know the design of this amp (by Coda Technologies) - no negative global feedback, strictly class A/B and lots of protection fuses etc.. - however, you have to be careful about removing IC's before it's fully discharged. My power cords definitely made a difference with this amp. Maybe you have not tried the right power cord yet.
Hbarrel - I will not be driving from Oregon to Akron, sorry. BTW - Power cord effectiveness has little to do with how clean the power is.... See my FAQ page at:
http://www.empiricalaudio.com
Audioengr...talk with Roger Sanders at Innersound and tell him that power cord made a difference with his amp..I wish I could hear his reaction when he hears/reads that...now, how do I suppose to know which power cord is the "right" power cord?....i wish someone could publish a list of "right" power cords and "not-so-right" power cords...i'm sticking to my beliefs: a well-designed/made power amp does not need a power cord...
Audioengr...I will check out your source for large gage hookup wire, and will use it if possible.

On a slightly different matter...I have heard a million times about the wonderful effect of "oxygen-free copper", but I don't recall any explanation of why ordinary copper is a problem. Can you tell us?