
Anthony Easton
The Erupter by EarthQuaker Devices is an ultimate classic fuzz pedal designed to deliver a well-rounded and defined fuzz tone with just enough intensity. Here are the technical specifications and features:
- Controls: The Erupter features a Bias control with a center detent for the "perfect" fuzz setting. When in the center position, the tone is big and round with a slight volume boost and great sustain. Turning the control counterclockwise makes the tone more gated with lower output, while turning it clockwise makes it louder and more refined.
- Design: The Erupter is designed to provide a big low end without being too mushy, a biting top end without being too harsh, and just enough output to send a tube amp over the top. It offers excellent wide-range clean up with the guitar’s volume control without losing too much low end.
- Parts: The Erupter uses new production 5% ½ watt carbon composition resistors, metallized polyester film capacitors, Sprague and BC electrolytic capacitors, and NOS, hand-matched, low gain silicon transistors for temperature stability and predictable operation under all extremes.
- Power: The device can be powered by a 9v battery or a standard 9-volt DC power supply with a 2.1mm negative center barrel. It is recommended to use pedal-specific, transformer-isolated wall-wart power supplies or multiple isolated-output supplies to minimize noise.
- Dimensions: 4.75 x 2.50 x 2.25 inches (121 x 64 x 57 mm) with knobs
- Current Draw: 9 mA
- Input Impedance: 500 kΩ
- Output Impedance: <1 kΩ
- Switching: The Erupter is true bypass and uses electronic relay-based switching. Audio will not pass without power.
The Erupter is hand-built in the USA and comes with a lifetime guarantee.
Watch the latest video demos and reviews for the Erupter from YouTube. Stompbx updates this every six months to reflect the most popular reviewers and guitar pedal demos for each pedal.

Below are live Reverb listings for the EarthQuaker Devices Erupter from Reverb. Stompbx automatically aggregates current offers to give you a quick look at available models, conditions, and prices. Perfect for comparing options and making an informed purchase.

Brand New
$149.99

Very Good
$119.95

Brand New
$149

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Check out the latest news and articles from around the pedal world.

Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton