MXR Uni-Vibe Chorus/VibratoMaker: MXR Model: Uni Vibe Chorus Vibrato Condition: New Description: The MXR Uni Vibe Chorus Vibrato delivers the same lush, chewy textures that players have used since the late '60s. Updated with modern gigging players in mind, this effect now it comes in a standard MXR housing a fraction of the size and weight of the original with true bypass switching. With its simple three knob interface, you can dial in the effect to your taste in short order.