With the rise of high quality USB DAC's this becomes a popular (and I think yet unanswered) question. How much is 1000 GBP cable better than a 10 GBP one? The theory says that digital is either 0 or 1, no cable can change that. Has anyone tried high end usb cables? Are they worth the money or is it just another way to rip the money off naive audiophile?