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
If you can do TOSLINK optical Amazon Fire TV box (<$100) running PLEX app ($5) with a cable like this http://www.amazon.com/XO-Resolution-Professional-Digital-Optical/dp/B003BM23FY to DAC should work quite well.

You would have to run free PLEX media server as well.

I am running a setup like this currently with excellent results in my 2 channel A/V system, but have not tried beyond CD resolution. I think it would work and not cost much to try though.
So no media servers capable of DSD with a digital out? That's surprising given the popularity of DAC's these days.
If you have a USB out, you can get something like a Music Fidelity V-Link which will convert it to coax or toslink. There is also a 24/192 version. for $70 it's worth trying.
http://echohifi.com/inventory.php
Come to think of it, USB out would work also as long as there aren't any resolution limitations.

What are the options for high res music servers with USB out?
Larrybou,
I found what both of us are looking for in the reasonably priced Marantz NA 8005. You can read about my personal experience with this wonderful product in the Review section.
Enjoy!