Clyde McCoy Wah

The Vox Clyde McCoy Wah-Wah is the world’s first production wah pedal, introduced in 1967. Originally developed by Thomas Organ Company engineer Brad Plunkett, the circuit was an accidental discovery while redesigning the mid-range boost (MRB) switch in a Vox Super Beatle amplifier. By placing the variable MRB circuit into a Vox organ volume pedal, musicians could sweep frequencies to create a vocal-like "wah" sound. Initially marketed to brass players to emulate jazz trumpeter Clyde McCoy’s muted style, it became a cultural icon after being adopted by guitarists like Jimi Hendrix and Eric Clapton. The original "Holy Grail" units are characterized by their warm, expressive nasal tone and the inclusion of a "Halo" inductor. Modern recreations, such as the Real McCoy VRM-1 and the V848 reissue, utilize custom-designed potentiometers, transistors, and inductors to replicate the legendary 1960s sweep. This pedal remains a foundational tool for rock, funk, and blues.

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