“Jimi at 80: Born in Seattle on November 27, 1942, Jimi Hendrix would have celebrated his 80th birthday this week. Throughout this week on Guitar World, we’ll celebrate his genius and game-changing impact on the world of guitar playing.

“Nobody knows the ins and outs of Jimi Hendrix’s guitar sound like Roger Mayer.

“Mayer had already worked with Jimmy Page and Jeff Beck and produced a number of different fuzz boxes by the time he met Hendrix at a gig at the Bag Of Nails pub in London.

“The two hit it off and Mayer showed Hendrix his Octavia, a unit that added an octave overtone to the original note. Hendrix loved the sound and used it on the solo to Purple Haze.”

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