About DSD.
audiocircle.com A visit to a Friend, Tape Project, DSD, Vision MC preamp, electrostats, & more by avahifi
…Finally DSD playback using the Schitt DAC. Well, this sounded very nice indeed, certainly something worth exploring further. My friend helped me set up J River playback software on myMac, loaded me up with a bunch of source material, and sent me home with his DSD DAC. I am not positive why DSD playback is so nice. I suspect that much of it is because the source material has had less mixing and cadiddling done to it. Simply better production values than with stuff normally stuffed on a CD. I do know that a lot of old great music will soon be available in DSD format at rational prices and terabyte hard drives are cheap now. I am enjoying playing DSD stuff here right now.
dB Cooper -> realhd-audio.com John Siau: Benchmark Audio Guru by Mark Waldrep

I actually had a SONY engineer say to me one time and this is quite few years ago…he said, ‘we realized after we got a ways down the road that DSD was kind of a mistake but we had too much invested in it’.