I am sure audioengr is right but in the mean time a Mac mini (mine is real old lol) via toslink to W4S dac2 sounds pretty good. You can set the mini to boot iTunes (or other app) on boot up so if you have an ipad/iPhone you don't even need a tv/monitor and just use the remote app.
Computer/DAC combo sugestions
Would be interested in hearing suggestions for Digital playback solutions which rival ( to replace) the best CD players. Thanks