Presenting the new Darkglass Electronics Harmonic Booster Clean Preamplifier.

Designed to be the perfect complement to Darkglass's distortion circuits, the flexibility and portability of the Harmonic Booster is also the perfect one-stop solution for gigging musicians in search of a precise and harmonically rich clean preamplifier.

Boost: Flat -20dB to +20dB cut or boost Character: Allows blending in the perfect amount of the tone-shaping circuitry. It can be set counter-clockwise for a flatter frequency response Mid gain: +-20dB @ the frequency selected by "Mid Frequency" Mid Frequency: Mid frequency from 250Hz to 2.5kHz Bass: +-20dB @ 80 Hz Treble: +-20dB @ 5 kHz DIMENSIONS: 75x111x43 mm (2.95x4.37x1.77 in) WARNING: The Harmonic Booster has a current draw of 30mA. Only use a regulated 9V DC adapter with a center-negative plug. Due to ecological reasons, it does not accept batteries. Unregulated power supplies and/or higher voltages may result in suboptimal noise performance and even damage your unit, voiding the warranty.