One easy way can be using a remote eye and place it so, that the remote doesn't support both receivers (Trinnov and speakers) at the same time.
When you have Roon, you don't need the IR-receiver in the Trinnov, that could be another solution.
Also Bruce solution is nice, it depend on you.

The 271 just for on/off is a little overshoot wink


800v3/218/271/8k.2/5k5s smile /5kC/DSP3200/Reviver/
TT-ELP/Graham Slee Revelation/Trinnov Altitude 32/OPPO 205
__Ayon/HB/Shunyata/Miltzow -- power cables,
__Ayon/Jungson/Miltzow --analog, Miltzow-- digital,
__Vortex/WMA ,