Sorry, as a tech Nazi I have to disagree
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I use a D50 with an extender cable to a laptop with a short 0.5m cable to a tube preamp and I compared it to the same configuration but with a short USB cable to the D50 followed by a long phono connection and there was essentially no audible difference when I had my wife/daughter do a double blind compare.
You do realize that all USB interfaces go through a standards compliant receiver which includes a retiming clock so that the resultant output jitter is essentially independent of the source until the input data stream falls out of the retiming window? This means that it's really, really, hard to see why a "better" USB makes a difference.
USB also employs two methods to prevent/detect data errors including a CRC(Cyclic Redundancy Code) and a packet sequence identifier, so errors are detected and fixed if possible, and flagged if not possible, so really, how can it be different?
By the way, my vinyl playback system sounds noticeably better than the D50, or any other DAC I've tried on Redbook sources, assuming quality LPs, and this has been validated using independent testing- I.e. not myself.
It can't be a blind or double blind test as it's obvious which source is which.