jcinwylie,
The DACs generally don't matter. Indeed, with musical programming, I have never detected audible differences except with test signals or certain musical material that can be especially revealing listening to residual distortion at the S/N limits of the converter--about 80 dB or more below reference level.
You are also comparing apples and oranges. Logic7 is a very sophisticated processor and often sounds somewhat better (in terms of realistic ambience extraction) than DPLII, particularly with 2-channel analog or digital sources and acoustical instruments.
Anecdotal reports of audible differences in the "sound" of DACs (typically from reviewers in tweaky magazines who never do instantaneous A/B comparisons with duplicate discs running in sync) are based on the most amateurish, casual listening and are never supported when rigorous scientific controls are applied.
Regards,
