Add the features of the original Fender mid boost kit used in the Eric Clapton model Stratocaster and other Fender guitars and basses to your instrument. System replaces one of the original tone controls with a variable "Midboost" control. Mid Boost knob adjusts gain from 0dB (no boost) to 25dB. Great for clean and distortion tones. TBX tone control is neutral in the middle position, cuts treble in one direction and cuts bass in the other direction. Kit includes: circuit board and battery connector, volume control, mid boost control, TBX control and output jack. Note: Pickup switch is not included but available as an added option.