The seymour duncan pickups booster is actually a pedal of gain moves which enables you to level your single coils up with and your humbucker for instance. It will boost your signal up to 16 DB, making it easy to not lose any volume when switching from the humbucker to the single coils from your fat strat. It can also be used to boost the humbucker on an give you some tube distortion like output. A very useful pedal, which can be used for 1000´s of settings. It has the Seymour Duncan quality and is a well built pedal, made to last. Other settings include switching tonality back and forth through the single coil and humbucker signal output shapes, which gives you a little bit more options to go with your fat strat. Definitely worth it’s price, which is low by the way.