The Source Audio Soundblox Pro Classic Distortion is a versatile and programmable distortion pedal offering a wide array of tones. It features emulations of classic distortion and fuzz effects, along with a Clean Boost/EQ mode. With a 7-band graphic equalizer, dual drive controls, and 6 user preset stations, this pedal provides extensive tone-shaping capabilities. It also includes MIDI input and expression pedal compatibility for external control and expressive playing.