USB cables conducor - help

“Step #1: ditch using a general purpose computer as a streamer 

Step #2: experiment with USB cables. Slowly ”

+1, @thyname 

@ortodox 

If you are not in a position to take step #1, then use a USB isolator to eliminate noise from your PC. You can use a generic USB cable between PC and USB Isolator and a high quality USB cable between Isolator and DAC.

Check out ZavfinoUSA, DH Labs or Supra for USB cables. 

@lalitk gives a good suggestion there. Back when I was using my Mac Mini as a streamer I used the The Wyre4Sound USB Reclocker between it and my DAC

It did help a little.

@lalitk is correct

Another strong vote for streamer first.  iFi Zen stream at $399 offers a lot of sound quality for the $$$ and not a bad way to start, then worry about a better USB cable.