Photocells, a lamp, original 2SC828 transistors and carbon comp resistors: the RetroVibe mk.3 delivers the majestic sounds of the best Uni-Vibe pedals from when it started, but is housed in a modern pedalboard-friendly chassis and compatible with common 9V DC power supply. Choose between Vibrato and Chorus modes and travel between slow wave sounds all the way to fast Leslie effects! Plug in an expression pedal to set the speed in real time! And there is a bonus! JAM Pedals have added an internal trimpot to set the maximum intensity of the effect, but which also manipulates the tone in a dramatic way, without sacrificing the pedal's unmistakable vintage character.
The MK 3 has a silent switch and works with most 10k expression pedals to control speed.