I don't have an Apollo,but my experience with an Arcam CD72 has been that whether I've used a PS Audio Digi Link 3, Stello DA220MK2, or Audio Note 1.1 DAC, and then the Arcam as a transport that they all added better presence, dynamics, soundstage, etc. (Using the Stello presently with it).
(In my main system I use a Blue Circle BC509 DAC and Stello CDT 100 transport)
(In my main system I use a Blue Circle BC509 DAC and Stello CDT 100 transport)