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
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?
I don't know anything about oxygen-free copper, but I can tell you I bought 4 pairs of oxygen-free copper interconnects, with gold plated rca's, from 1 to 4 meters yesterday. They ranged from $.75 to $3.00 on clearance at Walmart. They also had a decent gauge and nice cover. So I wouldn't think one should pay too much for the privilege of oxygen-free. In addition, some right to lifers might find it cruel to sufficate all those little copper strands.