Is there a known issue where USB audio sounds for a few seconds then stops?
The problem cropped up after my Mac took delivery of the High Sierra 10.13.3 update, and solved itself today when my Mac took delivery of the High Sierra 10.13.4 update.
The problem cropped up after my Mac took delivery of the High Sierra 10.13.3 update, and solved itself today when my Mac took delivery of the High Sierra 10.13.4 update.