Electro-Harmonix Tube Wiggler Modulation Pedal All-tube audio path4 different types of note-bending vibrato and amplitude modulation tremoloClarity and warmth12AC-1000 power supply included Using an all-tube audio path, The Wiggler generates 4 different types of note-bending vibrato and true amplitude-modulation tremolo with all the clarity and warmth that older generations once took for granted Power supply included