Created in the mid 70s in an effort to reproduce the modulated "jazz" amp sound of the time, the chorus effect pedal made a substantial contribution to popular music as one of the distinct guitar sounds of the decade. By replicating and recombining a shifted version of the guitar signal with its original, vintage analog chorus pedals create the lush and spacious vibrato sounds sought after by guitarists since their inception. The Indio™ AC‑2 True Bypass Analog Chorus Guitar Effect Pedal reproduces the original analog vibrato sounds that has given the chorus pedal its legendary status.