Wow, how does this thread barely have any activity?
I received the OL DAC yesterday. It's definitely my favorite sub-$200 DAC! It gets "most" of the way there to high-end DACs too.
I'm using TOSLINK for the first time via a Behringer UCA202 audio interface. One benefit of this is that it eliminates computer-related noise. Before, I was using a cheater plug on my laptop's power cable to get rid of ground loop noise, but that is no longer necessary.
I have volume issues with my active speakers, though, and had to experiment with the sensitivity switch and volume knobs on the back of the speakers and the volume control in my player. Without messing with all that, it gets too loud too fast with the OL DAC and Schiit SYS passive preamp. Ironically, I did not have this issue with the Chord 2Qute despite the fact that it outputs 3 volts instead of 2.