Top Definition
A device - usually in the form of a foot-operated switch - which is used by guitarists to increase the brilliance of their guitar sound by boosting the treble frequencies and increasing the gain to provide a richer sound from their amplifiers.
The Dallas Rangemaster is probably the most famous Treble Booster, but the little-known Catalinbread Super Chile Picoso is a different but equally rocking piece of kit.
by SpoonCabal August 29, 2008

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