Battery powered speakers for Yamaha Reface CP

[LivinLarge]

I am looking for a rechargeable battery powered speaker for the CP. The internal speakers are not very loud at all.
I tried one of the inexpensive bluetooth speakers. The sound quality was decent and the volume plenty loud enough, but there was a noticeable delay even though I was plugged into the aux input with a cable. I don't need to fill up a room. This will mostly be for banging around by myself.
What is out there that is reasonably priced?

 

[Biggles]

Take a look at a Boss Katana Mini amp, c6W and plenty loud enough.

it is labelled as a guitar practice amp but I used one for about three years with my Korg Kross 2 when I was jamming.

There is also the Blackstar Fly 3 Stereo that you should find for about $100 US

More expensive is a Roland Mobile Cube.

Should mains powered monitor speakers be acceptable then a set of PreSonus Eris 4.5 will work well, not to expensive and loud enough, I use these myself at home.

 

[LivinLarge]

I definitely want to have true stereo so the Blackstar system looks interesting.

 

[LivinLarge]

I ended up buying this speaker and it works fine for my purpose.

Amazon.com: Bluetooth Speaker, DOSS SoundBox XL 32W Bluetooth Home Speakers, 20W Louder Volume, DSP Technology with 12W Subwoofer, Wireless Stereo Pairing, Speakers for Indoor Party : Electronics

Buy Bluetooth Speaker, DOSS SoundBox XL 32W Bluetooth Home Speakers, 20W Louder Volume, DSP Technology with 12W Subwoofer, Wireless Stereo Pairing, Speakers for Indoor Party: Portable Bluetooth Speakers - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

www.amazon.com