Blah, blah, blah. There is error detection built into the digital transmission standards. Bit errors don‘t result in harsh midrange or steely highs, they cause nasty clicks and pops. TTL “1” is nominally 5v and ‘0” is nominally 0v. In application a “0” can be anything from 0 to .8v and ”1” can be anything from 2 to 5v. A 2v ”1” doesn’t sound different than a 5v “1”. In USB data transmission there is no 1 voltage or 0 voltage. There are two voltage states. If there is a transition from one state to the other during a clock period that is a 0 and no transition means a one. As long as the transitions can be detected all is good. A USB cable can”t have better bass, smoother highs, or better soundstaging. It either works or it doesn’t.