I have not run it through a single ended DAC, only other DAC I have is on the EF2a, I did do a pretty thorough comparison of the NFB vs the EF2a's internal DAC, both running through the amplifier section of the EF2a, and there was(surprisingly) an audible difference, the NFB seems to offer both greater extension both ways and increased tightness on the bass. Comparing the MJ to the EF2a is a bit trickier as it's much harder for me to AB them, what with swapping out the cables on the HE-500(Need to get a XLR adapter), but there is greater realism, soundstage, and in general more competency throughout the frequency range, the HE-500s seem to expend no effort playing anything. I know that's all mostly ambiguous, but the empirical difference is the MJ seems to be lower noise and lower distortion, all the while having an increase in PRaT. If I get the chance I'll plug my cousin's Modi into it and see how that compares to the balanced NFB.