@Thedaivisch
Hey and hope you're enjoying your new baby bass
I've owned my spector euro lt4 with barts and the darkglass for a while now. It is not the same setup as yours but even so - I think I can chime in a little bit, with whatever very unprofessional info I have.
Since right now Bartolini doesn't offer these pickups, you cannot really check for a current offering that would correspond to these specific puppies in the euro.
Having said that, the barts that come with the euro are not any newish thing and they are not hum canceling, meaning the J.
Seeing how the 5 string euros with barts came with these special pickups that have a higher output level and resonant peak for enhanced treble response and the neck pickup that is wound for a slightly lower output, I would wager the same is true for the 4 string version.
Granted, I don't have any proof of this and I go off of my own research. You would have to bother Spector and Bartolini for exact info and not rely on my esoteric, claimed knowledge.
I don't think any of my own experiences with the Barts vs EMGs are relevant here since its like comparing apples and oranges
Bottom line is - ask them directly if you REALLY want to know

