--> $140 posted
--> $130 posted
Here's EQD's explanation:
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.
Anywho, what we finally landed on is a super-simple single knob setup that allows you to bias the Erupter’s NOS silicon transistors for the perfect sound and feel, while still being touch responsive and cleaning up nicely when you roll back the guitar’s volume and tone controls.
Low “Bias” settings yield a rude, spongy fuzz tone with plenty of sag and a blossoming attack envelope that’s gated without entering “dying battery” territory. As the “Bias” control is increased, additional harmonics stack atop the input signal, producing a stiffer, more complex fuzz tone with a tighter response, increased output, and longer sustain. We had a custom center-detent pot made to fit the required resistance for the Erupter. When the Bias control is set at noon you will feel a little click. That means the pedal is perfectly biased to give the best possible fuzz tone.
The Erupter uses a fixed master output level and gain setting for the thickest fuzz possible and to push the full frequency range of the guitar out front when you kick it on. And we do hope you’ll kick it on often.