As you might recall, I have a Schiit Audio Bfrost DAC with USA and the Uber analog section. The Bifrost uses the C-Media CM6631A chip to support asynchronous USB. I've been using USB via a 15' Pangea cable with silver plating on the main signal wires.

For a quite few months I've been having one weird problem: once in a while the DAC will seem to loose the USB signal -- I get pure static noise that persists until I stop and restart playback or seek back/forth in the song I'm playing. I'm sure this is a USB problem, probably but not necessarily caused by the computer, because when I change the computer USB connection I'm using, the problem becomes better or worse. I've been considering going back to a S/PDIF coax connection, I decided first to try gaget that is also purveyed by Schitt Audio, the WYRD USB power isolator; see HERE -- a Wyrd solution to my weird problem, I hope).

Here's what Schiit says about it ...

So, what the heck is this little thing? Well, it’s either the world’s most expensive and limited USB hub, or it’s the key to eliminating sticky USB audio problems. Simply put, it cleans up your USB connection, eliminating noise and glitches caused by crappy USB power or USB port power management.

The Cure for Noise and Glitches:
Have you ever heard strange noise from your USB DAC? Or have you had it “drop out” after the computer goes to sleep? Or does your computer have trouble recognizing your DAC at all? It could be due to noisy USB power, or USB port power management (very common with Windows 8 and Mac Mavericks.)

Improves Sound, Color Printing, Data Stability:
Just kidding. This is silly. That’s like saying charging your iPhone off Wyrd makes the battery last longer. But some listeners say Wyrd improves the sound of their system. We’re not going to make any such claims. Nor are we going to recommend it for printers, external USB drives, or iPhone chargers.
The thing is in the mail; I'll update after I've tried it for a while.