The RetroVibe mk3 has to be one of the best modern Univibe style pedals on the market. Carefully developed with photocells, a bulb, NOS 2SC828 transistors and carbon comp resistors, this vibe has all the elements to get that old school sound we’ve been after. Use it with a passive 10k expression pedal and a TRS cable to manipulate the speed. And although it runs at 15v internally, it takes a pedalboard friendly 9v power source. Speaking of the internals, there is also a trim pot inside the pedal to control the overall “intensity” of the effect allowing the user to really tailor the vibe to their sound.