wrote:

How important is the quality of power cords in a high end system?

Very important. Mains voltage is dangerous. Power cords should comply
with appropriate regulations, and be properly insulated and constructed.

I guess that's not what you mean, though...

Does it really make a difference in sound?

No.

http://www.hometheaterhifi.com/volum...s-12-2004.html

--
Mark.
http://tranchant.plus.com/