The long-awaited DISTORTION has arrived, meeting the needs of the times. The FAT SANDWICH is the pinnacle of distortion pedals, offering the best sound quality and versatility you've ever had. It's suitable for any genre and playing style. This model is designed for use with clean amplifier settings. Its innovative multi-stage clipping circuit delivers a rich range of crunch and distortion tones. The carefully engineered passive tone circuit ensures you find the sweet spot for any guitar and amplifier combination. The volume control delivers high output, ideal for driving an amplifier. In combination with the drive knob, you can freely create sounds ranging from mild crunch to exquisitely detailed distortion. Three internal mini controls allow for fine-tuning to suit a variety of guitar settings. VOLUME: Sets the volume of the effect. TONE: Sets the overall tone (also interacts with the PRESENSE and RESONANCE knob settings) DISTORTION: Adjusts the amount of distortion. PRESENCE: Adjusts the high-frequency tone. RESONANCE: Adjusts the low-frequency tone. Toggle footswitch: Switches the effect on/bypass. LED indicator: Displays the effect on/off (lights up when on). Input jack: Input the signal from the instrument's output. Output jack: Connect the processed signal to an output device such as an amplifier. DC input jack: Supply power from a 9V AC adapter (sold separately) (center negative polarity). CURVE: Adjusts the filter corner frequency of the 1st stage of DISTORTION. HIGHS: Adjusts the high frequencies of the 2nd stage of DISTORTION. DRIVE: Adjusts the GAIN of the 2nd stage of DISTORTION.