This is the coolest ever! Thanks again for this, Simon.
I did a similar project but used Adafruit stuff instead, about the same cost but available locally so I didn’t have to wait for it to show up. Had to modify the libraries some but works a treat.
Also modified the roon extension part of this so that it shuts down the amps after 15m of stopped / paused playback rather than in the evening at a predetermined time.