Wah-Wah 101

Let’s dig a little deeper. My very first wah pedal was actually a gift from my ex-girlfriend. She told me it sounded “sexy.” She knew absolutely nothing about guitars. Maybe the sound reminded her of some sleazy ’70s B-movie soundtrack. That pedal was a Dunlop GCB95 with a red Fasel inductor. I absolutely loved it … at first. I even took it out on tour. But I grew to hate it. It was heavy, hard to click on, had no on/off LED, and it sucked tone like crazy. But still, it was the pedal that made me fall in love with wah and start digging deep into its history.

Wah is one of the most iconic effects pedals—so iconic that even non-guitarists recognize it instantly by sound alone. Hence the name—wah. The effect was first developed around 1964 by the Thomas Organ Company, an American distributor of Vox products from the U.K. Their goal? Originally, it was intended for use with Vox organs, to mimic a trumpet-like tone. Bradley J. Plunkett, a junior engineer at Thomas, modified a midrange booster circuit and eventually decided to use a potentiometer as a frequency control. The result was essentially a variable band-pass filter, initially released as the Clyde McCoy Wah-Wah. McCoy was a trumpet player, and that product was intended to achieve a muted-trumpet effect with guitar. In 1967, to better appeal to guitarists, the name was changed to the Cry Baby, although in Italy Vox branded the device as the V846 Wah-Wah—and the rest is history.