Well, I just got a Bel Canto 2.5 and it's been incredible. Works wonders with my quad 12L actives as Dac and preamp. great "out of the box" sound and it has all the inputs and outputs I want.
decent headphone out for low impedance, high sensitivity headphones. (won't drive an HD800 to full capacity but does very well with my markl modded D7000)
For under 2K, you may want to consider a DAC 1.5 (does not have the 2.5s analog input and with a lesser power supply) and a USB/ SPDIF converter like the Bel canto mlink/ ulink or audeophillio 2. I just ordered an AP2 to trial for 30 days to see if i like it over the built in USB input