Thanks to everyone for the answers! The new Ampeg Rocket BA-210 seems a good alternative to the Fender Rumble 500, but I'm afraid I can't test both of them where I live.
GK MB-212 II is tempting, but maybe too expensive for the budget I have.
I don’t know if this is useful but I live in Europe, I like to play a bit of everything both modern and vintage sounds. I hope this makes sense.
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I bought it used and can’t return it, it’s not a bad amp but not the best for my Jazz bass.
Sorry for my English.