I will amend Gasman's comments slightly- it all depends on the dac. I also have an Assemblage D2D-1; have also used GW Labs DSP (similar to Monarchy). My 2-ch dac is the Audio Logic 24MXL, which was NOT improved by using jitter-reducing interfaces. It reclocks the data, and I am not sure if this makes a difference, but any jitter-reducer must be tested as an interface to each dac to see if it helps or hinders. That being said, the D2D-1 DOES work well with my HT dac- an Assemblage 3.1 Sig.