Up for sale is this Digitech Bass Synth Wah Envelope Filter. This wonderful green bass synth pedal is your portal to all the funky filtered tones you'd want. With 4 knobs for Sensitivity, Control, Range, and Type you can adjust parameters to find the sweet spots of your favorite tones. You get seven types of filtering; Envelope, Sub, Synth I, Synth 2, Filter I, Filter 2, and OctaSub. This pedal is in excellent condition.