Wonderfully sounding USB DAC with 16 bit internal native resolution (DAC plays 24/96 music files by fitting its native 16 bit resolution). Standard version with Mundorf Supreme output caps.
I think this DAC is meant to be used with Apple computers with the Mac Mini being the most frequent computer mentioned in a lot of glowing reports. Eric Hider at db Audio Labs did mention once that the DAC operates with PCs as well (no guarantees from my end as I used it with a Mac Mini). He also might still do upgrades if you track him down.
Search AC for a lot of information, e.g. https://www.audiocircle.com/index.php?topic=74816.0
Priced to sell at $280 shipped to CONUS (original MSRP was $1,500). DAC is sold.