Pros: Completely transparent
The ODAC was engineered with a mind for science. Using science the designer created a completely transparent source that has absolutely no effect on the music. Thus, you hear only your headphones/speakers/ect, not your source.
If you don't want to color your music, It simply can't get better than this. As long as you only need a RCA out or 3.5mm out, and want a transparent source, it cant get much better than this.
EDIT: Head-Fi's website will NOT update the "Detail" sliders and are fixed. Website is possibly broken