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The Preamp Tube Maze

Preamp tube (12AX7 being the most common) selection is a subject that will return as many opinions as there are guitar players. It’s the preamp tube maze of information and opinion (or should I say MIS-information) If you research any “preamp tube” (or any other vacuum tube or “valve” for that matter)..

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LVS-1 Internal AC to DC Variable Voltage Unit

LVS-1 Internal 6.3v AC to Variable DC Voltage Bridge Rectifier mounts inside your tube amp to power DC accessories (like LED lights etc.) from 4.5v to 13.5v (adjustable through a trimmer) all while retaining the heater center tap as the ground point for the DC output…

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