That's a nice bass, and actually deserves the word "rare" in the description too!
Does the active circuit have a trim pot to adjust the level by any chance?
No, but on my 50th birthday, when we played the Dudley Beer Festival, one of them (and my girlfriend at the time, now Mrs Zero) did grab me and badge me and silly string me and bewig me.
It's possible to buy or make DC blockers if phantom power might be a problem.
https://www.instructables.com/Phantom-Power-Blocker-protect-Your-Dynamic-Microph/
A guitar, amp, and bluetooth transmitter/effects unit:
https://www.ebay.co.uk/itm/175184992982
New prices - £130 for the guitar, £30 for the bluetooth thing, CR-10T amp can't be found new but £20 second-hand. A snip at £600 for the lot.