The Erupter is the result of over two years worth of tone-chasing, tweaking, and experimentation in search of the ultimate classic fuzz tone with a big low end (but not too mushy), a biting top end without being too harsh, and just enough output to politely send a tube amp over the top.

Earthquakerused every trick in the book to craft a classic fuzz Device that sounds good with any pickup type, anywhere in the chain (even before a wah pedal!) without any tone-sucking impedance mismatching. Earthquaker build each Erupter with a buffered input section, transformer-based pickup simulation, new production 5% watt carbon composition resistors, metallized polyester film capacitors, Sprague and BC electrolytic capacitors, and low-gain, hand-matched NOS silicon transistors to deliver a well-rounded and defined fuzz tone with just enough pummeling intensity, so you can rock n roll all night and still get to bed at a reasonable hour.

• BiasThis control has a center detent for the “perfect” fuzz setting.