hate to do a recommend what I own type of thing, but the 840C is the most feature rich mid-fi digital source out there. Proprietary DACs that upsample to 24/384, digital input, CD transport just in case you want to spin a silver disc, XLR and RCA outs. And perhaps its biggest aural strength is that it does get the highs right.
Its a pure win for mid-fi'ers all 'cross the head-case, as many happy owners will tell you. $1350 new, <$1000 used.