Mad Professor Simble Predriver
The Simble Predriver is not just a preamp, it is a preamp/booster/compressor/upper harmonic enhancer. 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. The maximum is about +10dB on lower level notes and average is about +6dB.