ISP THETA PreAmp Pedal Pre-Distort Preamp usable for overdrive of Distortion circuit or for clean tone shaping / overdrive Incredible tone shaping with Pre-Distort tone includes Bass, Mid Level, Mid sweep from 300 to 3KHz and Treble THETA Distortion circuit with post distort Bass, Mid Level, Mid Sweep from 300 to 3KHz and Treble Highest gain Distortion available anywhere, greater than 160dB of gain using Distortion and Pre-Distort Preamp overdrive Decimator G-string II noise reduction built in for absolute silent operation and greater than 80dB NR