Versatile: The polyphonic Superego Plus works with guitar as well as other instruments including bass, keyboards, vocals, drums, etc., and comes equipped with an EHX 9.6DC-200 AC Adaptor Advanced Engine: The Electro Harmonix Superego Plus Synth Engine comes with a complete effects section featuring 11 effects types, an EXP input for effect parameter control and preset recall, and an EXT jack for a 3-button controller Multiple Controls: The pedal provides enough sound shaping control to please the most sonically adventurous player and is equipped with Dry, Effect, Attack, Decay, Threshold, Layer, and Gliss knobs, plus Rate and Depth knobs for the Effects Section