New battery powered speakers/PAs have been pretty quiet since covid. The newest products are the 8” Mackie Thump Go and JBL Eon MK2 array which really don’t fit your bill. Personally owned the Roland BA330 and can’t recommend it. Also have an AC-33 that has been repaired twice now in it’s lifetime (Boss/Roland are cheaply built IMO).
Check these out though: don’t know a heck of a lot about them or their shipping options so YMMV, but I’ve heard their name dropped next to the Yorkville you already discovered. Soundboks 3 (two 10” woofers and a 1” tweeter with a swappable battery):
https://www.soundboks.com/products/s...n-3/techspecs/
You might be SOL on reverb though. Depending on how many channels are needed I’d recommend a battery powered reverb pedal sent through the effects send of a battery powered mixer:
https://www.sweetwater.com/store/det...c-reverb-pedal
https://www.sweetwater.com/store/det...yx-1002b-mixer
Or if you only need a few channels this is a really nice all in one battery powered solution with reverb:
https://shop.eliteacoustics.com/coll...-and-bluetooth
Good luck! I’m eagerly looking forward to what new battery operated tech comes out later this year if any at all.