I’ve had the Monoprice 6 Zone amp connected to Home Assistant for years, it worked fine, but I really didn’t use it much. After experiencing some issues with Volumio, I added a new streaming device but ended up having to update home assistant to latest, and now have had to reinstall the Monoprice integration. I’ve added the Monoprice 6 Zone amp integration using port /dev/ttys0. It adds the integration, but all the zones are unknown and stateless. I cannot toggle anything on or off. The loggs are saying zones can’t be updated. I’ve restarted multiple times, checked the USB / Serial connection, I have no idea what else to do at this point. Oddly enough, I did try another port (/dev/ttyAML1) and had the exact same results.
Is your Amp working perfectly now, or you having same issue?