The DigiTech Synth Wah™ envelope filter doesn’t cop out by giving you only one sound to work with and try to tweak. The DigiTech team has gone way beyond that with a full 7 different types of sounds to choose from, including envelope filters, synth tones, and filter sweep effects. This pedal gives you a ton of effect bang for the buck. Controls feature Sens, Control, Range, Type. Outputs feature Normal (Dry) and Effect.