There are numerous legends circulating about the birth of the wah, but they always involve Brad Plunkett and Del Casher.
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ビンテージ】 VOX V846 Thomas Organ
Vox Wah Wah 250.414 ヴィンテージ ワウ - 楽器/器材
Fuzz Face - Wikipedia
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Effects
Dunlop Band of Gypsys Fuzz Face Mini Distortion Pedal with Clip-On Chromatic Tuner, Over the course of ’69–’70, Jimi Hendrix appeared at his most
Dunlop FFM6 Band of Gypsys Fuzz Face Mini Distortion Pedal with Free Clip-On Chromatic Tuner
Wah Before or After Fuzz?
Jimi Hendrix's Wah-wah Pedal, Fuzz Prototype and Amp in J. Levine's New Year's Day Auction
Vox Wah Wah 250.414 ヴィンテージ ワウ - 楽器/器材
Analog Man Sun Face Fuzzface fuzz pedal
What is the history of the wah pedal? - Quora
How to Create a Jimi Hendrix Inspired Guitar Tone