Uni-Vibe

The MXR Uni-Vibe recreates the classic photocell-driven modulation made famous by Jimi Hendrix. The pulsing, swirling texture comes from light-dependent resistors modulating the signal, creating organic movement that digital processing cannot replicate.

Speed control adjusts rate from slow throb to fast warble. Expression pedal input allows foot-controlled speed changes for dramatic performance effects. The characteristic "seasick" pitch wobble defined psychedelic guitar sounds.

Chorus/Vibrato switch toggles between modes. Chorus mode blends affected and dry signal; Vibrato mode provides full pitch modulation. The photocell approach creates the distinctive sweep that made the original Uni-Vibe essential.

True bypass switching. Standard 9V power. For players chasing Hendrix's "Machine Gun" and Robin Trower's signature swirl, the MXR Uni-Vibe delivers authentic photocell modulation.