Do powercords make a difference in sound?

OK can't resist:

Do powercords make a difference in sound? Yes; no powercord, no sound.

Do they make a difference by upgrading stock power cords in amps, ect versus aftermarket power cords? Don't know, never had a powercord in an amplifier.

If so, can anyone advise a good bang for the buck upgrade? If you find a powercord in an amplifier, remove powercord to improve sound.

Wow lissnr, you read a lot into my comments. I was just having a little fun with the language that was in the original post.

I agree, power cords can make a difference, often a substantial one, and sometimes more so than interconnects or speaker cables. Anyone who has tried a power cord shoot out in their system and noticed no difference probably has tin ears or a not-very-resolving system. The differences can be obvious when moving from one cord to the next.