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Univox UD-50 Uni-Drive
General Specs
Features: Pedal Range, Input Level, Amplifier Jack, Instrument Jack
Years in use: ca. March 1971
The Univox UD-50 Uni-Drive is one of the oldest overdrive pedals that were made. Jimi Hendrix used one in the studio on certain songs while recording at the Record Plant.

It rocks back and forth, similar to a wah or volume pedal. It also has 6 overdrive adjustments using the Input Level Dialer. Each setting clicks into place and increases the amount of volume and overdrive. The Pedal Range knob adjusts the pedal's sweep/volume ratio.

The Uni-Drive has a delicate mid-range tone, in the last two stages slipping into a mid-range distortion.

This is the first endorsement of a Univox product that Jimmy Page had given. He only used the Uni-Drive pedal in March 1971, on Led Zeppelin's Return To The Clubs Tour. After he stopped using the Uni-Drive pedal, he relied on the Marshall 1959SLP Amplifiers for volume boost and distortion, while also using the Volume knobs on his guitars for fine volume tuning.


Univox UD-50 Uni-Drive
Jimmy Page, Dazed And Confused, March 05, 1971, Ulster Hall, Belfast, Ireland
Univox UD-50 Uni-Drive
Jimmy Page, Dazed And Confused, March 06, 1971, National Boxing Stadium, Dublin, Ireland
Univox UD-50 Uni-Drive
Jimmy Page & Robert Plant, March 11, 1971, Southampton University, West Refectory, Garden Court, Southampton, England

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