I've seen options like the Audioengine with both an optical and USB, but it seems like only one can be hooked up at a time (USB port used to power the DAC when optical is used).
Thanks in advance for the suggestions!
Have you considered burning all your music CDs to FLAC (or 320K) audio files and play them all from your computer's hard drive?
What headphones are you going to be using?
I own the Audio-GD NFB-15.32 and it sounds great to me.
The NFB-11 come with a Sabre DAC chip, which I guess would be considered better then the TubeMagic D1 plus's fairly good CS4398 DAC chip.
The NFB-11 comes with a 32-bit/384K USB input, the D1 plus's USB input is 24-bit/96K
(the D1 Plus S/PIDF (optical & coaxial) input is 24-bit/192K, which is about the same as the NFB-11's S/PDIF)
The TubeMagic total should be around $234 shipped ($209+$25)
A fully load NFB-11, $385 shipped.($300+$20+$20+$45)
The NFB-11 price goes up $15 on June 1st.