ModTone Guitar Effects MT-DUO Dirty Duo Dual Overdrive and Distortion Guitar Effects Pedal 2 Great Overdrive Pedals in One giving players everything from a shovelful of dirt to a metric ton Controls include Volume Tone Drive and Hi/Low Cut filter TL082 low-noise op-amp for enhanced processing of Overdrive True Bypass Switching MOSFET clipping for the smoothest saturation possible