I emailed Aurender today and had a response within a few hours.
It is on its way to the California warehouse and should be with dealers by early September. Currently, dealers can order it.
Direct Quote concerning the coax circuitry:
" The SPDIF output of the N100C is essentially what is found in the UC100, but built-in. Its design is not as sophisticated as what is used in the N10."
Full specifications can be found here:
http://www.aurender.com/page/n100
As always, the truth will be in the listen. I'll really have to hear this with the N10 before making a final decision.