Retrovibe mk3

Jam Pedals updated the Retrovibe for the mk3, adding soft-click bypass switching and expression pedal compatibility while maintaining the vintage-correct component selection: four photocells, real incandescent bulb, NOS 2SC828 transistors, and carbon-comp resistors.

The circuit still lifts internal voltage to 15V, matching original Uni-Vibe operating parameters. That authentic Hendrix throb—somewhere between Leslie speaker and liquid phaser—remains intact. The mk3 simply makes it easier to integrate into modern pedalboards.

Toggle switch selects Vibrato or Chorus mode. Intensity and Speed dials shape the modulation. Any passive 10k expression pedal (standard TRS cable) controls speed in real-time for swells and dramatic tempo shifts. Internal trimmer adjusts maximum intensity.