Longer Power Cords Sound better?

Stop concerning yourself with such nonsense and enjoy your system. No, there is no difference.

Well, that settles it; the source of all audio knowledge has spoken.
:)

Here's some food for thought about longer lengths - It may just be true that a longer power cord could actually "sound better" BUT - this will vary from cord manufacturer to cord manufacturer. Why? Because many of the power cords are actually acting as a filtering device between the wall and the component, not just a power delivery device (or wire) that many of us suppose they must be. Recently I did a power cord shootout and discovered that quite a few of the respectable sounding power cords were also filtering as compared to some various DIY copper, silver, different sized guaged and cryod cords I had on hand (all of which were just designed to deliver raw power, period). With this in mind, it makes a perfect hypothosis that some cords will actually sound better (to a point mind you) if they are longer, since they may actually filter the noise to the component much better. Think about this guys, it actually makes sense!

BTW: None of my DIY cords could hold a candle sonically to some of the commercial cords that were obviously filtering in some way. (Have I perhaps uncovered one of "secrets" that differentiates the best cords from the also rans?)

Since this thread is back to my attention today I'll make good on my threat from above, and report that after additional testing with 1.5m vs. 2.5m lengths of a power cord specifically claimed by its manufacturer to incorporate beneficial filtering -- intrinsically via its lengthwise construction, rather than by some sort of discrete attatched filter (the van den Hul Mainsstream, which BTW is not offered in lengths below 1.5m for this very reason) -- I am reconfirmed as siding with the longer-is-better hypothesis (or at least more pronounced in its effects, which in this case I find salutory).

Ehider,

The difficult part of defining "better" PC performance is knowing what is causing the change in sonics from cord to cord. You can't say with certainty that a cable sounds better because it offers 'filtering' of some sort, unless you've compared the exact same cable with and without filtering. Several power cable companies claim that certain of their cords sound better because of a degree of RFI filtering, and yet they also employ other changes on these cords, such as different geometry, different gauge, or even different connectors. When measured, many of these 'filtering' cables have significantly different inductance and capacitance values compared to a basic "diy" cable, which makes it hard to know if you're hearing the filtering, or the increased inductance.
If that seems to leave the issue 'up in the air', I think that's exactly what some of the cable marketing out there seeks to achieve.