Interesting. I like that the JamManStereo has loop select buttons built in. And quite a bit of internal memory + card storage.
Didn’t see anything about being battery powered for either one…which is too bad because that’s one of the best features about the BossRC-20XL if you have a battery powered amp and like to loop outdoors without relying on having a power source to plug into.
I don’t have one anymore… but I kept that for my battery-powered looping rig for quite some time, and used an RC-50 with the “powered” rig.