Hi everybody First off, having being a communications engineer for more than 20 years, I know that it is impossible for a USB cable to 'change' or 'improve' a digitized audio file being sent over it. Therefore the only difference in USB cables can be quality. So my question is ..... at what point does cost outstrip quality. Obviously the likes of Audioquest and Curious are completely out of the question as a $1000 cable can not possibly be worth $980 more than a $20 cable. Most of the cables I use are indeed around the $20 mark and none of them have failed yet; in fact a 12 year old printer cable is attaching my one of my servers to a sound system (it sounds great) Please please please do not reply if you think there is a difference in sound between USB cables; there isn't. I am just interested in knowing at what point does quality improvement become so minimal that it is not worth it.