Originally Posted by kskwerl I hope this is true I just ordered the o2 and the odac
They do work really well with the MD. I clipped some resistors in mine to change them from 2.5x/6.0x gain to 2.5x/1.0x gain. They still get plenty loud at 1.0x gain, and I do believe that should allow for a slightly cleaner sound...
Some have also claimed the O2 has slightly scratchy treble and recommended swapping out the input JRC 2068 opamp with the LM4562. I tried it out of curiosity and because my ears can be sensitive to treble (probably doesn't help that I listen loud and with long sessions). Again, I think this helped make the O2 slightly more resolving and with less scratchy treble. Very subtle, of course, and within the realms of placebo. I'm quite enjoying what I'm hearing now anyway, so I'll leave it like I have it.
Anyway, that's just my experience with the O2/ODAC and the MDs, but I'd have to guess that you'll probably be very satisfied as-is!