73Bruin: This is all new to me, but as I understand it, you are right, you don't need a separate DAC, it is the proper USB DAC.# Group A supports sample rates up through 16 bit / 48 kHz.
# Group B supports sample rates up through 24 bit / 96 kHz.
# Group C supports sample rates up through 24 bit / 192 kHz. I got this from the FAQ on audiophilecomputer.com.