Asynchronous USB DAC and USB cable quality


I have converted to PC audio about 2 years ago and enjoying the hobby. I recently upgraded my DAC from a Benchmark DAC1 HDR to a DAC2 HGC mainly to download DSD files. I am now using a 'regular' Belden USB printer cable purchased at Office Depot which sounds great. I have performed A/B comparison between Toslink fiber input and USB input using well recorded Red Book files and could not hear any differences, which I kind of expected.

The reasoning behind this was that whatever jitter is generated by the PC/USB/Toslink cable is re-clocked by the Benchmark DAC which uses asynchronous clocking. However, would I gain anything sonically by purchasing an audio grade USB cable like a Furutech GT2-USB cable? I would need about 10 feet and do not want to pay a load of money (if any benefits). The Furutech would cost about $235 for that length.
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There was this aspect of testing that always bugged me.

I have tested components and cables in most dealers' setups where there were always noticeable improvements/changes when we swapped some things out.

But at home, the differences were always much more subtle.

Recently I have been helping a friend set up a demo room for his speakers and I think I might have figured out why this was the case. Room acoustics.

My rooms had none/little. I had carpets/shelves and furniture in the room which reduced the amount of echoing but I have never treated the room with foam etc.

In my friend's shop, my friend used some simple foam/bass traps on the side walls, front/rear walls and ceilings. And suddenly, the changes we made became very noticeable.

All this is a very longwinded way of answering your question - would the Furutech cable make a difference? It depends.

Take the room out of the equation and what I've noticed it is that changes upstream in your system becomes much more noticeable.
Doggiehowser,

Thanks for your reply. Agreed that room acoustics is an oversigth by many audiophiles but already have this covered.

Coming back to the USB cable issue, I'm not worried that much by jitter, but stuff like EMI, quality of mechanical contact, cable impedance mismatch/reflections between PC and DAC,etc. Being curious about this subject, I may bite the bullet and purchase the Furutech USB cable. Worse comes to worse, I may not hear any difference but will be secured by the fact that Furutech builds top notch cables/connectors.
I just ordered the Furutech GT2 Pro USB cable from PartsConnexion and should get it next week. I will keep you posted on my listening sessions.

My gut feeling is that there will be no changes in audio quality, but will have a better quality build than my printer cable. The Furutech should be immune to RFI and EMI which is all good to me. If I get better sound, it will be a bonus :-)