...which can take a while to master regarding all the possibilities for the pickups, the tone controls and the active/passive switch. The knobs are volume+push/pull for active/passive, balance, treble, bass. Plus two switches for the neck and bridge pickups with three positions for each humbucker for wiring in parallel, series, as single coils, etc. I am still unsure that every setting is exploitable. It can be, sometimes, frustrating. but I am sticking to few and my ear at the very moment. With stainless strings (Ernie Ball), the bass gets the agressive and metallic sound that I love. I can also get a deep, fat, booming sound. Also everything is adjustable: the Just-A-Nut system (for the height of the strings at the head), the resistance of the tuners. In short, a bass for those who love to customise their sound in every detail.