From my post of 2 months ago:
I got a Naim Mu-So 2nd gen yesterday. After experimenting, I found I could use the Roon Alarm Clock extension to wake up the Mu-So (which had been in standby) at a chosen time and to play an internet radio station. I didn’t have to use Mu-So’s own alarm feature. The only glitch was that the volume was very high (which I turned down manually). I suspect that that was something to do with Roon, inasmuch as I’ve had problems before with Roon playing at very high volume.
The problem persists. The only cure is to unplug/replug. The remote itself works but cannot fix things.