Hi,
[HAD-1, USB Audio] appears to be my DAC/amp. I am already ignoring a whole list of options, which are quite obviously not applicable to my headphone amp, like surround sound. As is, I have picked [HAD-1, USB Audio IEC958 (S/PDIF) Digital Audio Output] as my setting and it works fine. But I am curious about the functionality of the others:
HAD-1, USB Audio Direct hardware device without any conversions
HAD-1, USB Audio #1 Direct hardware device without any conversions
HAD-1, USB Audio Default Audio Device
Does anybody know what they are supposed to do, compared to the one I am using?