This bass is proof that Fender are doing things right.
This Jazz Bass in nothing more (and nothing less) than the trusted old Jazz Bass, only updated slightly, offering better balance, lower weight and a clever passive switching system.
The S-1 switch, as Fender calls it, consits of a push-push pot located in the crwon of the volume pot. When engaged, it connects both pickups in series (rather than the usual paralell mode), offering a new sound that is powerfull and present, great for rock or as a volume boost.
The good news is that this is a passive system, so there's no battery involved neither is the old Jazz Bass tone affected by it when it is not used. Kudos to Fender!