First, X2 what Al and numbs have stated.
Now assuming you will totally ignore them for now, and the amount of SACD music available out there is worth it for you, you might take a look again back at PS Audios PWT/Dac combo which will play all formats and eventually AIFF. When the PS Audio Bridge is finally released then you can output all your RB, SACD, and ripped CD collections bit perfectly 24 bit/192 (as I recall) from your computer to your ULN-2 and be set with room to spare on your rack because you sold off all those superflous dacses.............