yes i do, and find it better than my sb3/sacdp/and slightly preferable to the 400. mhdt labs constatine dac i owned. as itsborken says, so long as you have no need for optical input which is its only limiting factor, imo... there are a few choices around the 400. price point however i believe they may be more aggressive in their treble than i would prefer, gathered from what i read, along with other subtle trade offs in their sonic signature. i do believe the 700. price point and above is where one would then begin to easily identify a more pleasing signatured dac, which remember, meier must have voiced this dac to work in tandem with the amps signature to his liking within its parts count price point.
of course there are valid criticisms and room for improvements which could be made to the this dacs sonic signature, as always, it only depends how much you wish to spend on another box and cables. when you read of the criticisms of either the amp or its dac look closely at the gear those people use as a referance. some of them are unsatisfied with 2000. amps and 1000. level dacs, is what i notice... if and when i do upgrade it will be for somethin with utility such as a rega Saturn or Apollo and until that point, i really am quite satisfied at each listening session, quite honestly ...