Darkglass Harmonic Booster Bass Preamp

The Darkglass Harmonic Booster: the preamp that gives your bass guitar its own voice

The Darkglass Harmonic Booster is one of the most versatile preamps Darkglass has ever built. Compact, solid, and ready to use, but with a depth you only truly discover once you start playing. This isn't a pedal you set and forget; it's an instrument in itself.

The sound of the Harmonic Booster is warm, defined, and full of character. The Boost knob adds body and presence, while the Character control colors the harmonic content of your signal, from clean and transparent to richer and more layered. The real secret lies in the Mid Gain and Mid Freq controls: these allow you to precisely carve out the mid-frequencies that your bass and your playing need. Whether you want to cut through a busy ensemble or add warmth to a clean signal, the Harmonic Booster gives you control.

The Darkglass Harmonic Booster has an input, output, and 9V power (center-negative, 30mA). It can only be used with a regulated 9V DC adapter. The pedal is built with typical Darkglass quality: robust, reliable, and ready for the toughest conditions on stage or in the studio.

A preamp that makes your bass guitar sound exactly how you hear it in your head.