MXR Uni-Vibe Chorus/Vibrato

MXR

MXR is an American company founded in 1972 by Keith Barr and Terry Sherwood in Rochester, New York. The company specializes in the production of effect pedals for musical instruments, including the famous Phase 90, Distortion +, and Dyna Comp. In 1987, Dunlop Manufacturing acquired the trademark and continues to produce the original effect pedals, as well as new models such as the Carbon Copy and Fullbore Metal. MXR also has a line for bass guitarists, MXR Bass Innovations, with pedals like the Bass Octave Deluxe and Bass Envelope Filter. The MXR Custom Shop is responsible for recreating vintage models, such as the hand-wired Phase 45.

Effects pedals

Over the years, MXR has released various series of effect pedals, including the Reference Series (1973–1984), the Commande Series (1981–1984), and the 2000 Series (1982–1984). In 1983, it introduced one of the first multi-effect rack units for guitar and bass, the Omni, which combined six different effects: sustain, distortion, delay, equalizer, flanger, and chorus. Today, MXR remains a leading name in the music industry, known for its innovative and high-quality effect pedals used by musicians worldwide.