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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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This Month in
Led Zeppelin History

November 21, 1968 - Robert becomes a father to a baby girl named Carmen Jane.
November 09, 1968 - Robert marries Maureen in London. Their reception is a performance at the Roundhouse in London
November xx, 1969 - Tempers flare over Atlantic in the UK wanting to release singles
November xx, 1969 - Recording for Led Zeppelin III begins at Olympic Studios in London
November xx, 1970 - Plans are in motion for a Yardbirds reunion
November 08, 1971 - Finally after much anticipation, Untitled is released
November xx, 1972 - Houses Of The Holy is mixed and completed
November 10, 1972 - Led Zeppelin sell out 120,000 tickets in one day
November xx, 1973 - Initial recordings for Physical Graffiti commences at Headley Grange
November 04, 1973 - Led Zeppelin finalize the purchase of Headley Grange to be their new corporate headquarters
November xx, 1974 - The band makes plans and rehearses for the tenth North American tour
November xx, 1975 - Led Zeppelin records Presence in a mere 18 days
November xx, 1976 - Led Zeppelin book into Ezyhire Studios to rehearse new material for an upcoming tour
November 04, 1976 - The Song Remains The Same movie premieres in Europe
November xx, 1977 - Jimmy dispells rumors of Led Zeppelin’s break up
November 06, 1978 - Led Zeppelin purchase and ship new gear to Polar Studios to begin work on a new album
November 10, 1979 - Led Zeppelin and their entire entourage attend an ABBA concert
November 07, 1980 - The band meets with Peter Grant to announce the retirement of Led Zeppelin
November 29, 1999 - The RIAA announced that Led Zeppelin were only the third act in music history to achieve four or more Diamond albums, a Diamond album being awarded for accredited sales of more than 10 million units in the US.
November 01, 2007 - An announcement was made that Jimmy Page had fractured his finger on his left hand after a fall in his garden and the reunion show would be postponed to December 10, 2007.
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