In my own experience with the Cambridge Audio DACMagic Plus and the Audioengine D1, USB 2.0 works fine in the office but my home PC is a gaming rig that is *heavily* overclocked (it requires water cooling to remain stable).
In that application, USB 2.0 is unlistenable and I rely on toslink SPDIF from the mobo to get clean audio.
In that application, USB 2.0 is unlistenable and I rely on toslink SPDIF from the mobo to get clean audio.