Hi Reks
I have 3 unmodded DACs, a DAC-AH, Zhaolu D-2 and a Constantine. While reading through granodemostasa's DAC search thread I A-B'd the DAC-AH and the Constantine. (I use a Dayton glass cable btw, for no particular reason. ) I never heard the Dialogue II but the Constantine sounded much better than the DAC-AH through the GS-1, foobar 9.5, 32bit, KS, Bob Dylan, Modern Times, 320kbps, 650s.
Not much of a test, but there it is.
USG