Expert Pro Turns On Unexpectedly

[Axel]

This is very interesting. I have now the same problem , after I got an apple TV box in the house. The Apple TV is located directly below, on the floor below the room where I have my Devialet Expert 220. What now happens is that if I put the amplifier in sleep mode by ba short press on the remote control (or using the app), the amplifier stays in standby mode as it should. If I turn it off with a long press on the remote control, the amplifier turns on again after a few minutes. If I turn it off with the front button on the amplifier, it remains switched off. This happens even if the Apple TV is not in use (switched off), but connected to power. Haven't tried unplugging the Apple TV yet,  to see what happens then. Another thing, which I haven't noticed before, to turn off the amp with the front button I have to do a long press. By pressing it briefly, I just change the source. Maybe it's normal and I just haven't tried it before?

There are three possibilities when you use the front button. 
Very short press: changes input. 
Slightly longer press: standby.
Long press: off

It’s a bit hit and miss so I never use my front button and always fire up/power down the amps or change input via roon or the Devialet app. I only use the physical remote for volume and menu duties.