What?
Upgrade option for existing uDAC-2 owners.

Asynchronous USB Audio

The audible difference between synchronous and asynchronous USB audio is best left for the very discerning audio enthusiast and audiophile to decide. We provide an upgrade path from uDAC-2 to uDAC-2SE and our advice for consumers who are just getting to appreciate high quality USB audio is to start with uDAC-2 without the additional complicatoin of configuring for Asynchronous USB Audio.