There's more to this device then the dac. It's an AMP Dac Combo. Head-Direct is also a well known company, with good support and decent quality control (not the best, but better then avg for chineese products). So when comparing these devices the AMP section must also be compared, what the EF2 lacks in dac, it may very well make up for in amp, + tube rolling options. I doubt the dac section in either of these offering will be anything to get excited about, at least with EF2 you get tubes to tailor the sound a bit.
here's more info on the EF2 if you have not seen this thread...
http://www.head-fi.org/forums/f5/rev...sb-dac-433150/
EDIT: to be clear, my responces have been targeted to Poormandeluxe, not the OP. There's some confusion here, if your looking for a dac only, I do not recomend the EF2. Only as a combo, the EF2 also can accept standard RCA input, bypassing it's DAC, to be used as an amp only.