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The pedals were still hand built by him at home. By 1985 Butler was using Chandler Industries to distribute the Tube Driver.
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In the mid-1980s BK went to work for Dean Markley Industries.Around this time Butler began offering an option to allow users to adjust the bias voltage to the tube and tweak its response to their tastes. Each pedal was still hand-built by Brent in his home.
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