Not a stupid question at all. Every Bart pickup I've come across has been passive http://www.bartolini.net/
Ah...but I think Bartolini does make some active pickups (with the preamp built-in). I was able to find the listing, but now I don't know where it is! Yes, I know the difference between active electronics and active pickups, and I'm pretty sure that there are some Bartolinis that are active and just a few bucks more than the passive ones.