honestly I think any [unproven] difference a USB cable might make pales in comparison to the differences a) getting a better asynchronous transport or b) considering clock irregularities introduced from the computers USB controller as well as hardware/software latency issues.
The result of adding an audiophile USB cable could quite possibly be a drop in the ocean - or have no significant improvement in jitter performance at all.
Found some interesting audiophool USB - related [overpriced] products that might resurrect this thread
here. As with all audiophile products technical info ( on the tX-USB) is skint, but at least this looks interesting.
Does bring into question though the whole rationale of using an expensive USB cable to connect an otherwise flawed (or quite possibly adequate) USB controller and computer to a transport/DAC.
Recently I just tested a blue jeans cable coax BNC, compared to an audiophile 75 ohm solid silver cored RCA, between my AudioGD DI and NFB-10 ES and found absolutely NO reliably discernable difference - easy to test too - just flick back an forth between digital inputs with switch.
I can say with absolute certainty that it made no difference which could reliably be discerned, playing FLAC with my system, with my perfectly functional ears.
If I had someone else flick the switch (the music is not interrupted) I would not be able to tell at all when the switch was changed, let alone which cable was on or which was better. QED