does power cord length matter? fact or myth?

like Peter Walker from QUAD used to say: "the cable just has to reach the amp" he was talking speaker wire actually...

Also I had Vince from Plinius USA tell me PC length has to be 10 feet exactly for best sound, I never followed up on that one.

WTF? Pixie Dust...

I have recently reconfigured my system and do not need any cord (power, IC, or SC) over 1M long. In fact, I am going to make a 2-foot long PC tonight to go from a dedicated line to my Isoclean conditioner. I never bought into the whole Mapleshade min. 8 ft. min. speaker cable length, or other min. lengths I have seen posted. There are two many examples of short wire runs within the gear itself. Plus, one way to reduce LCR is to use shorter cables.

Absolutely - HUDGE difference.

Cutting it will (at best) provide half the performance O.M.G.

Who would do this - O.M.G.

Short answer - if you'll drink the whole power cord kool-aid, then, no doubt you'll buy into this one.

To put bull aside, it will depend on brand, your equipment, on degree of resolution your system is capable of, current quality and your hearing.
To put it another way, there will be a difference, and you may or may not hear it.
Some manufacturers and audiophiles recommend power cords be no less than 5' long. I remember that someone on this forum said that it is true for Noth American 120/60 current but is the opposite for Euro 220/50 current.
Personally I only have 5' cords and don't think about it.