Fender Clapton Pre Amp Mid Boost Kit 25db Strat Guitar part number 0057577000.
The 25db Mid Boost circuit was first used on Fenders Elite Stratocaster in the 80s. The Elite Strat was only in production for 2 years but the Mid Boost circuit found a fan in modern legend blues guitarist Eric Clapton who insisted Fender include the Mid Boost circuit in his signature guitar. Now various models of Eric Claptop Strat have come and gone but the Mid Boost circuit has always stayed. The system replaces one of the original tone controls with a variable “Midrange Boost” control. The Mid Boost knob adjusts gain from 0 dB (no boost) to 25 dB (for killer mids). Great for clean and distortion tones. The TBX tone control is neutral in the middle position, cuts treble in one direction and cuts bass in the other direction.
The kit includes all of the parts needed to upgrade your guitar with the Mid Boost Preamp used on the Eric Clapton and Buddy Guy Strats as follows