do any of you know-it-alls actually have any experience trying different usb cables in the same exact system? if not, this is all just opinionated tripe.
i have a computer-based home system, computer feeding external dac via usb, and the external dac usb receiver is self-powered (usb 5V bus only serves for recognition purposes). i started with a 6 foot cryo'd cable i got free a while ago when i bought a cheap usb-spdif converter (before the current external dac). this wasn't long enough, so based on the word on the street that all usb cables are the same, i bought a cheap-o 15 footer. before changing cables, i liked the sound quite a lot, but immediately upon changing to the longer cable, the sound lost all of its immediacy and coherency. all the sounds were surely there, but they were harder to discern and absolutely less musical. switched back to the original 6 footer and it was back to normal.
i have no idea the brand of the 6 footer - it does look a little nicer than the cheap-o one - but this is no case of audio jewelry placebo, i can assure you. i have no vested ego in the shorter original cable, i'm in it for the best sound.
i know some of you will want to take pot-shots and say it's all in my head. however, before you do, consider that i have ACTUALLY experienced this in my own system, a comparison between two usb cables with two very distinctive and distinguishable effects on the sound. if you haven't bothered to make comparisons of your own, in the same exact system, with the same music. please spare me the ridicule and your baseless opinions.
however, if you have made some real comparisons, please share! maybe it was just the length in my case - although 15 feet doesn't seem that extreme to me, especially given there were no power demands on the cable. or maybe it's something to do with the build quality?
ok, now go ahead and give me an earful