Couple of considerations, the Emotiva ERC-4 using its AES outputs, the NuPrime CDT-8. As stated in another thread I wouldn't consider a transport if it didn't have AES due to what I perceive to be superior connection and digital transfer method. BTW the NuPrime also has I2S outputs which may or may not be beneficial to you and your existing DAC.
Hope this helps.
Hope this helps.