Electro-Harmonix SUPEREGO PLUS Synth Engine/Multi Effect PedalDesigned with the most adventurous instrumentalists in mind, the Electro Harmonix Superego+ is a pedal capable of creating a multitude of effects, including glissando, infinite sustain, pitch shifting, organ like shimmer, and much more. It builds upon the synth engine of its predecessor, the Superego, in several ways. The original's SPEED, GLISS, DRY, and EFFECT parameters are still on hand, but added to mix are ATTACK and RELEASE knobs, as well as a