I had that setup until a few months ago: PC source feeding a DCC2 SE, with my sub being fed from the DCC2. See my living room rig. The key for great sound was using an empirical audio USB-to-AES converter between the PC and DCC2, and having the right setup at the PC end. The sound of a song ripped and played from the PC was indistinguishable from a CD played from my CDSD transport.
I used a Y-connector from the single-ended L/R pre-outs of the DCC2 to a single cable to my sub. And I ran balanced L/R pre-outs to my amp.
If you're thinking about the DCC2, I highly recommend going this route. I haven't heard a better DAC. My only gripe was that it only goes up to 24/96 and I wanted to play higher rez source material. But I may end up going back to the DCC2 because I liked it and haven't seen much 24/192 source material yet.
I used a Y-connector from the single-ended L/R pre-outs of the DCC2 to a single cable to my sub. And I ran balanced L/R pre-outs to my amp.
If you're thinking about the DCC2, I highly recommend going this route. I haven't heard a better DAC. My only gripe was that it only goes up to 24/96 and I wanted to play higher rez source material. But I may end up going back to the DCC2 because I liked it and haven't seen much 24/192 source material yet.