This Pedal is currently available.
Uni-Vibe clone
EXP Jack – This ¼” EXPression jack accepts a TRS expression pedal connector or a Tip-Sleeve 0-5V control voltage input. Some suggested Expression Pedals include: EHX Expression Pedal, M-Audio® EX-P, Roland® EV-5 or Boss® FV-500L. The polarity of the expression pedal’s plug must connect the Sleeve to the heel position, Ring connected to the toe position, and the Tip connected to the wiper. The nominal expression pedal impedance is 10kΩ, but it can accept impedances ranging from 6kΩ – 100kΩ.