This D/A narrowly bests, in audio quality, a twice-as-expensive Berkeley Alpha DAC v1. Plus it adds a USB input and offers a pair of 18 dBu fixed outputs for use with a preamplifier and a pair of maximum 24 dBu outputs, attenuator controlled, when using the DAC without a preamplifier. Read more
The only feature it lacks that the Berkeley DAC offers is remote control of volume and input selection??but that's because I'm using it in a home playback system. I imagine, though, that most users of the DAC will not particularly want remote control.