wrote in message ups.com...
Hi,

How important is the quality of power cords in a high end system?
Does it really make a difference in sound?

Thanks,

Vasilis

Mains power integrity does not come into phonic consideration at all. Just assume it's always there on hand.
The audio (data, video, or whatever else) is routed, manouevred, amplified and output from a multi-stage device running off a PSU (or several) whose low or medium voltage is now modified to give stable high-quality DC.
So, the answer to your poser is a big No!
Now go worry about something else.
Jim