We refer to them DACs but they are much more USB Drivers, USB interfaces (some asynchronous, some not), the DACs, preamp, and volume control.
There seem to some synergies between driver, settings and playback software and some combinations sound better than others (to me

). For example, with Oppo, 44.1/16 (and others formats) sound best to me when with bit-depth is not altered by the playback software. There are also settings within the USB driver that can alter the sound. For the most part, these are subtle differences.
For the Op, he was waited his long, maybe he should hold out for the HA-1
- Rich