VIBRATO PEDAL A circuit inspired by the 60's Uni-Vibe pedal but with Tap Tempo to control speed and adjust the LFO. You can manipulate the Tap Tempo with an external expression pedal without influencing the analog audio path or the photocell. Volume control up to 9dB boost. Depth control for mixing. Ratio control with 4 speeds and Dry/Wet selector so you have a predetermined signal level without effect (like the Uni-Vibe) or a vibrato-only sound. Tap/Exp input to connect a TRS expression pedal that can be combined with an internal selector so you can control the effect from outside. With the Tap Out position you can connect the Unicorn to any other pedal you want to manipulate its tempo and use one pedal to control the tempo of the other.