While I’m not sure about specific brands, you can find a good assortment at www.avnow.com.
You may have some luck with them.
www.avnow.com is a good place.
I actually saved a few bucks and got the Ion portable block rocker Bluetooth system.
We added the Fitness audio V series to it for mic setup. This is just to get started and I am very happy. It is loud enough to take a big class outside.