April 23, 2024
Butler Tube Driver valve & Bias mode 240 V
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Butler Tube Driver Complete with12Ax7 Tube UK 240 volt Mains driven Optional Bias Pot model The custom variable "Bias" mod—with additional custom 5th control ( several of these were made for Eric Johnson and Joe Satriani) The Bias control allows you to adjust the tube characteristics over a wide range. It's like changing the types of tubes anywhere from a weak 12AU7 to a blistering 12AT7. Approx 2.5 years old The original and best valve drive pedal now thankfully back in production again Pedal in full working order and is the 220/240 volt Uk/Europe version
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