They are out of a Jazz V plus with the Kubicki pre-amp. I would like to get that thing out of the equation just for simplicity/ dependability reasons. I think I'm gonna sell the preamp. The pickups plug into the preamp via a wiring harness. I don't wanna cut the harness off if the pickups aren't gonna work out.
Don't know about the Jazz Bass pickups but I used to have a Franken-bass with a P Lace Sensor and it sounded the business whether I had a preamp in there or not. I should have kept that pickup when I sold that bass.
You can use any of our pickups passively - That's how they're designed (we like to say "batteries are for flashlights!") Put a pre in the equation and you'll have MEGA output. They'll work either way.