See Alvin Chee post(s) on the SH forum in this thread, in particular post #629 (March 9, 2020) where he mentions a software/firmware issue:
https://forums.stevehoffman.tv/threads/denafrips-dacs.897934/page-26
Apparently others have had similar problems with their DACs. I would suggest contacting their support.
https://forums.stevehoffman.tv/threads/denafrips-dacs.897934/page-26
Apparently others have had similar problems with their DACs. I would suggest contacting their support.