Mad Professor Simble Predriver

This musical tonal combination is totally adjustable with your picking attack and guitar volume pot.
 The amount of boost depends on the input signal level and HOT/COOL switch position. Maximum is about +10dB on lower level notes and average is about +6dB.
 Simble Predriver’s special circuitry uses low noise transistor with high input impedance (over 2 Mohm) so you can boost even piezo pickups without tone loss.