Precision Music TechnologiesPMT is a manufacturer of guitar electronics that modify the function of your guitar's current tone pots.
Potentiometer - PMT, V-Treb, Audio Treble Bleed, ⅜" shaft
Precision Music Technologies V-Treb – Variable Treble Bleed Bypass Circuit. Made in USA. The V-Treb variable treble bleed/bypass circuit corrects the problem of high frequency losses at reduced volumes by allowing the player to control how bright or warm the tone will get as the volume control is reduced.