Boost

Flat -20dB to +20dB cut or boost.

Treble

+-20dB @ 5 kHz

Character

Allows blending in the perfect amount of the tone-shaping circuitry. It can be set counter-clockwise for a flatter frequency response.

Output

Connect from the ¼” Output jack to the input of your amplifier or another effects pedal.

Warning

The Harmonic Booster has a current draw of 30mA. Only use a regulated 9V DC adapter with a center-negative plug.

Unregulated power supplies and/or higher voltages may result in suboptimal noise performance and even damage your unit, voiding the warranty

Mid gain

+-20dB @ the frequency selected by “Mid Frequency”.

Input

Connect your instrument or output from your pedal board to the ¼” mono jack.

Mid Frequency

Mid frequency from 250Hz to 2.5kHz.

9V DC

Only use a regulated 9V DC adapter with a center-negative plug.

Bass

+-20dB @ 80 Hz.

A revival of the first Darkglass design, the Harmonic Booster is a clean bass preamp that aims to master the control of harmonics and filtering, which are crucial to sculpting the character and texture of a bass tone.

• Clean preamplifier that enhances attack and presence
• Comprehensive 3-band active EQ
• Unique tone-shaping engine controlled with Character knob
• Semi-parametric Mid control
• Designed to perfectly complement Darkglass distortion circuits