I have the Onix. I send SACD DSD to a Denafrips Pontus II 15th via IIS and the SQ is fantastic. Prior to that I had a McIntosh MCT500 to the DA2 of my C2800 via MCT (din) cable. The Onix/Pontus is a bit more musical and smooth, while the McIntosh had a bit bigger soundstage and was a little faster. But overall SQ level is quite comparable.
If I am reading that D.Bob thing correctly, it is sending the digital to the DAC via optical or coax. If that’s the case I don’t understand how DSD64 is preserved from the disc.

