What I always wondered about is how one-sided cords are accepted by the audiophile crowd. After all, this throws the earcups completely out of sync with one another, introduces phase differences, etc, etc etc. All because there's 12" extra cable between the two earcups.
Seriously, though, if you can hear the difference in two digital transports, all extracting the same ones and zeroes from the same disk, if you upgrade power cords, if you find that silver-based cables carrying a _digital_ signal sound brighter than copper cables (same ones and zeroes!), and if you believe in burning interconnects in, and subscribe to everything else George Cardas covers on his website, the extra 12" of cable, IMHO, should make a huge difference in listening..
Sigh.