The Shin-Ei Original Uni-Vibe is a legendary phase shifter effect pedal designed by audio engineer Fumio Mieda. Introduced in the 1960s, it was originally marketed as the Vibra-Chorus by Japanese company Shin-ei (then known as Honey). The pedal was designed to mimic the sound of radio signals from Russia undergoing atmospheric modulation, creating a unique chorus and vibrato effect for electric organ or guitar.

The original Shin-Ei Uni-Vibe features a distinctive metal hood with a mirror-like interior, an incandescent bulb, and four Light Dependent Resistors (LDRs). This unique arrangement is believed to be essential for producing the pedal’s signature sound. The pedal also has an external speed control foot pedal, allowing for precise control over the effect.

The Shin-Ei Uni-Vibe has been widely used by many famous guitarists, including Jimi Hendrix, David Gilmour, and Eric Clapton, to name a few. Its thick, rich “chorus” effect has become a staple in classic rock music. While many companies have copied the Uni-Vibe's design, many players agree that there’s no substitute for the original.

Shin-ei

Demo by Isaac Berumen

Demo by Fret Junkies

Official Website

Review by gilmourish.com

Review by Catalinbread Blog

Uni-Vibe

Designed by electronic guru Lee Jackson, the B1G 1 Gain Booster was engineered to be a high fidelity, studio quality gain boost ( It features +32db of clean headroom!) without adding or detracting anything from the original signal. It is in effect, an analog pre-amp on par with vintage and modern recording studio channel strips with some extra added "love".

Demo by Ramon Goose

Official Product Video

Product Page

Review by Pedal of the Day

Review by Stompbox Steals

Review by The Gear Page

exp pedal

B1G Black

Like the B1G 1 Gain Booster, the "Not So B1G - Julian Lage Touring Model" adds a clean boost to your tone via a massive 30+ db of pure studio quality gain using the exact same circuit board. 
Designed for guitarist Julian Lage, to make road traveling easier, this custom model features a smaller, lighter body with no foot switch as Julian never turns off his B1G 1!

Not So Big B1G

Not So Big B1G by Shin-ei