I upgraded My PC (or so I thought) Originally I had an asus with a soundcard (came stock) that had an spdif / coax output. This held near 2 TB of FLAC which I played using J-River through my Dac>Amp> HD800. Sound was superb but Lag / Skipping became an issue. I decided a better PC may make a difference and I wanted USB 3 so I could transfer files faster I found a Dell with intel i5 and a 3 TB HD it would also accept another HD (Bonus-Less Clutter, no outboard HD Dock station). Ended up with Dell Optiplex 7010. My issue was only had USB output, No toslink, No Spdif / coax I went ahead and picked up a schiit eitr converter and have everything running BUT there is a discernible sound change and I definitely prefer the previous. So my question is. Is there a sound card that offers SPDIF / COAX output, I see some cards but they all talk about the DAC which has me scratching my head. Is the DAC on the soundcard Necessary ? I strongly prefer using my Electrocompanient DAC Any Advice ? Links certainly appreciated as well.