Wah Pedals: A Look “Under the Hood”

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Since their invention in 1966, wah pedals have had a prolific history in modern rock music. From Jimi Hendrix’s “Voodoo Child” to David Gilmour in “Echoes” (where it was used backwards). But what goes into a wah pedal? How does it get that distinctive, “cry baby” sound? Let’s get under the hood and find out.