Purple Haze, Fire, One Rainy Wish, Who Knows. What has Roger Mayer got to do with these songs?
These songs have the sound of the Octavia on them, a device made by Roger Mayer, and in the early days he made the pedal exclusivily for Jimi Hendrix.
Roger and Jimi met during the time Jimi was recording Purple Haze. When he tested the effect he rerecorded the solo on Purple Haze with the new effect, and he started a collaboration with Mayer that should last untill he died. Mayer made different fuzzboxes for Jimi as well, and fine-tuned his Fuzz Faces and also his Uni-Vibes.