Darkglass Harmonic Booster Bass Preamp Pedal

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MSRP: $279.99
You save $60.00
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The Harmonic Booster is derived from the first few gain and filter stages of what would later become the core of the Darkglass overdrive technology. This clean preamp enhances attack and presence while sculpting the mids for a very percussive and aggressive character. It features a unique tone-shaping Character control, as well as a 3-band active EQ with a semi-parametic mid control.



  • 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





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Returns Policy

If you are not completely satisfied with one of our products, you may return it anytime within 30 days of the date of purchase for a hassle-free refund of the amount you paid for the product. Refunds do not include shipping costs. We only specify that returned product not be damaged, missing components, or manufacturer’s documentation. Any special order or non-stocking items are specifically exempted from this policy and will be assessed an appropriate restocking charge.

Shipping Policy

Interstate Music is proud to offer Free Shipping on most items with no minimum purchase. The following are the restrictions to our Free Shipping Policy:

  • Certain oversized or special-order items may not qualify for free shipping. 
  • Free Shipping is available to the 48 contiguous United States.  Alaska and Hawaii do not qualify for Free Shipping.
  • Mid to Heavyweight items will ship via UPS with delivery times between one to five days depending upon destination.
  • Lightweight items (13 ounces or less) will be shipped via USPS Priority Mail with a tracking number.  Delivery is usually within two to five days.

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Darkglass Harmonic Booster Bass Preamp Pedal

MSRP: $279.99
You save $60.00

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