Darkglass Electronics / Harmonic Booster 2.0 Preamp/Booster for Bass This item is in like-new condition, having only been used once in a studio! No box, only the unit itself. A clean booster equipped with powerful tone shaping and a unique Character control. This groundbreaking model sets itself apart from typical boosters, offering sounds ranging from flat characteristics to aggressive and percussive tones. ■ Bass Effects Pedal/Booster ■ Controls: BOOST, CHARACTER, MID GAIN, MID FREQ, BASS, TREBLE ■ Size: 75 x 111 x 43 mm ■ 9VDC center negative #darkgrass #basseffects