Class D

Is that the same NC500 you bypassed the buffer clearly violating the recommendations of the app note that the amplifier stage be driven by a low impedance source to maintain performance?

You buy them without buffers get a life!!
Just yet another furphy of yours, that you can’t remember to see the forest for the trees??
Yes as I told you once before (is your memory shot) because my MSB dac has twice the output voltage needed from it’s very low output 10ohm impedance balance direct coupled outputs to drive the NC500 balanced input direct, so NO!! buffer board is needed!!

Woosh right over your head ....

Over your head that's for sure.

Congratulations George you figured out how to make those Ncore modules sound like bad 1980's tube amps. 

Adding to the list of things george does not understand we must now add this:

While when we hear/transmit audio, 20KHz is enough, that is different from a circuit point that is within a feedback loop. For that point, MHz of bandwidth, if not 10's of MHz may be needed.


Oh well, live and not learn.