iOS 14.0 - Expert Remote App Not Working

[David A]

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Also: Roon is used to control the music (select what to play and where to play it), not control the Devialet (source selection, volume, ...)

Actually the Roon remote app can do more than just tell Roon what to play and where to play it. Roon can control the actual volume setting on the Devialet. Roon will also change the Devialet's input to whichever of the 2 streaming inputs you are using (wifi or ethernet) and if you tell Roon to start playing something while the Devialet is in standby Roon will communicate with the amp, turn it on, and start playing music as soon as the amp is ready. Roon has this functionality whether you're streaming using AIR or RAAT (Roon Ready), it works with both streaming protocols.

What you can't do in Roon is to control anything else. You can't get Roon to change the input to something other than the input Roon is using and you can't control functions such as balance, tone controls, SAM setting, etc or turn the amp off in Roon. You have a limited range of control related to what you need for playback from Roon but you can control some Devialet functions as well as selecting what to play and where to play it.