Like the original Uni-Vibe®, it uses photocells to create chorus and vibrato with a warm, undulating, liquid groove for a sound and response thats true to the classic design. Boosted power rails provide 21st century definition and headroom, and an expression pedal input puts free-form control for speed or intensity at your feet. Selectable Chorus or Vibrato delivers classic 1960's tone and vibe. Simple control set: Volume, Intensity, Speed.Expression pedal control of Speed or Intensity. Boosted power rails for extended headroom and definition. Rugged and compact die-cast chassis. EHX 9.6DC power supply included. The item "Used Electro-Harmonix EHX Good Vibes Analog Modulator Guitar Effect Pedal" is in sale since Wednesday, October 23, 2019. This item is in the category "Musical Instruments & Gear\Guitars & Basses\Parts & Accessories\Effects Pedals\Filter & Modulation". The seller is "citymusicsteve" and is located in Leominster, Massachusetts. This item can be shipped worldwide.