Vox created the world's first wah-wah pedal while designing a device using a variable version of the "Vox MRB" (mid-range boost) circuit made famous in their amps. That pedal imitated the sound of a trumpet being muted and they recruited Clyde McCoy, a famous trumpet player of the day who was best known for his expressive use of the trumpet mute, as an endorser of the pedal, hence the name: Vox Clyde McCoy wah-wah Pedal. The original 1960's Vox Clyde McCoy wah-wah pedal became one of the most sought after vintage effects by collectors worldwide. Now they are re-issuing this legendary effect with some modern enhancements.

The Clyde McCoy wah-wah pedal includes details like a custom-tuned inductor made by the original manufacturer and a true bypass switch. Plus, it has some new enhancements like an AC adapter jack and a newly designed, custom taper potentiometer. The McCoy wah-wah sports a modified but classic look, with a gray hammertone finish on the lower half and a sketch of Clyde McCoy on the bottom, just like on the original.