If you’re feeling adventurous and want to integrate it with ST, I used this thread.
Just do a search on here for Monoprice 6 zone and you’ll get a few search results.
If you have more than 6 zones you can link two of the amps together. This amp comes with wired control panels via cat5 cable. Volume, source, etc. I didn’t wire them up since I got the RPi integration working.