"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, a biting top end without being too harsh, and just enough output to politely send a tube amp over the top 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." -EQD

This pedal is in fantastic shape. The protective plastic is still on the fuzz knob. There is almost no wear or signs of use on the pedal. This guy sounds fantastic! There is an internal trim pot to assure the bias setting is center alligned.