Best way to output hi res files to DAC?


I'm looking for a media player I can upload hi res files to that will output digitally (digital coax ideally) to my Wadia amp.

The Wadia Intution has it's own up converting DAC so all it needs to receive is the raw digital output. Could be a hand held unit, whatever. The units I've seen including the Sony, Fiio etc only have analog out which doesn't help.

Since SQ isn't critical given the raw digital output, what would be the best most cost effective way to go? Or at least some options?
larrybou
No idea why Wadia also runs the analog through the internal DAC. But it sounds quite good and natural in any case. They jammed lots of good technology into a small unit - and it works very well.
The Aurender X-100s does look like what I'm looking for. But without a DAC the $3K price tag seems pricey at least in sub 12K systems like mine.