I have a pretty weird bass, bought off here 4 years ago. It has some unusual pickups. The pickups have now gone totally microphonic and cannot be re-potted. I really love the sound of the bass but I don't know what the pickups are, or what the pre-amp is. I've put some photos here in the hope someone can help
The luthier was John Marshall Custom Guitars. I can't find any mention of him since 2012, and his website has been down since then too
Failing that, do you reckon most of the sound comes from the pickups? Or maybe the actual bass and it's pre-amp have more influence? In which case, what standard pickups could I put in?