The NAD M10 is not Roon Ready and will be disabled to use with Roon after September 21, 2020. The caveats are it will continue to work if you never disable the M10. Once disabled you won’t be able to enable it again until is is certified by Roon. Also, if you uninstall and reinstall the Roon core on a server the NAD M10 won’t be able to be used until it is certified. After 2.5 years Roon has yet to certify the M10.
Beware when using Roon with the M10. I don’t know about the M33 but I assume it is uncertified as well.
See this thread - Roon Ready Certification