I posted this when GH first reappeared, but it's gone!
USB audio is a standard so any cheap "plug and play" or "no drivers required" device will work with Linux, it's only some expensive "Audiophile" DACs that will not as they spent some of the extra money writing a custom driver for more features.
The only thing that might not work is volume control, but you can control it in software so not a big problem.