An optional add-on remote controller that allows the Captain to actively shape the sound of the tower speakers depending on the real world listener position i.e. wake boarding (far out), wake surfing (close in) or cove (stationary). Whatever the case may be, Throttle Box tunes your tower speakers from full throttle (wide open) to Sound Quality (completely engaged). The Throttle Box controller can be remotely mounted in a number of handy locations.