The Chord Qutest, Hugo TT2 on up all have galvanic isolation of USB in as well as some other RFI/EMI trix on board... There are technical presentations, given by the designer Rob Watts, of these DACs floating around on the internet somewhere...
Every major computer manufacture has these NUC type boxes, look around... Google is your frenemy...
Every major computer manufacture has these NUC type boxes, look around... Google is your frenemy...