The Emotiva DC-1 is almost exactly like the Emotiva XDA-2 dac, except the DC-1 is a fully differential/balanced circuit from DAC chip to output. It also uses LM4562 as output buffers instead of OPA2134 (as is used in XDA-2). The sound is going to be almost the same. Both have same power supply and both use active I/V circuits for an AD1955 DAC chip.
If I was looking in similar price range, I would consider the Teac UD-501. Isolated power supply sections for each channel and does not use active I/V (which does require some power supply current). Teac is also fully differential/balanced circuits and does support DSD (if you're interested).
