It will depend on which DAC you think sounds better, If you use the RCA analog outs from the player then it's DAC's will be used..the digital out will use the DAC in your pre/pro. I use the digital out from my player because my Sunfire pre/pro sounds very good IMO. In some cases people report that they hear no difference between the two, my guess is that both DAC's are of equal quality in these cases.
Dave
Dave