Do you think this one would work?
https://www.ebay.com/itm/Pigtronix-U...-/172939955494
I found an old Talk Bass thread about trying to find an adapter for the PMB (link below) and there was a lot of talk about rigging up something that would work. They seemed to be in agreement that the PMB adapter was wired tip = -9 volts and ring = +9 volts. Down the page on the above ebay link it says the Pigtronix unit is sleeve positive and tip negative. This is all above my head so I'm not sure if sleeve and ring mean the same thing. The last post on the Talk Bass link talks about a solution that worked well but it entails buying another power supply at around $189 and doing some custom wiring at the jack. Not sure how to do what he's talking about and pretty sure I don't want to spend that kind of money if there's a cheaper, simpler solution.
https://www.talkbass.com/threads/rav....889209/page-2