While plagued with the same issue, moon 390 volume can’t be controlled by roon ,
The issue suddenly is fixed after several weeks.
I did not do anything recently except I did have to unplug and reboot my 390 for another issue unrelated to room. I don’t know if that is what fixed the fixed-volume issue or not but all is now working.
But what I did was
-power off 390
-unplug for a full 2 minutes
-also checked for updates
Thanks so much for getting in touch about this - I am so sorry it took us this long to get back to you. We are hoping for much much faster response times.
Are you still experiencing this issue? We’d love to help if you are.
@Mark_Labow thanks for sharing what fixed it for you! What about @Jason_T, are you still experiencing the issue with your Moon Ace? If so, could you please create a new thread in the #support category?