Like the original Uni-Vibe®, it uses photocells to create chorus and vibrato with a warm, undulating, liquid groove for a sound and response that’s 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. True bypass, too. Very groovy! Specifications 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 Always-on Speed indicator Rugged and compact die-cast chassis True Bypass EHX 9.6VDC-200mA power supply included Current Draw: 45mA @ 9VDC Dimensions in inches: 4.0(w) x 4.75(l) x 2.25(h) Dimensions in mm: 102(w) x 121(l) x 58(h) WATCH: EHX Good Vibes Modulator