K&K Sound Definity Pickup and Preamp SystemThe Definity System delivers K&K's natural pickup power to a variety of difficult to amplify acoustic instruments in an elegant and easy to install package. It is designed to work with virtually any floating bridge instrument, like Archtop and Macaferri guitars, and even semi acoustic electric guitars with Tune o matic bridges. It is also well suited for the banjo, cello, and many ethnic or folk instruments like bouzouki, saz, etc. The Definity pickup