Zvex Special Edition Sylvia Massy Woolly Mammoth Fuzz Pedal

Special Edition: Hand-selected & tested NOS 2N2222A transistors for unrivaled tone  Stunning UV-printed artwork by Sylvia Massy—legendary record producer and artist (Tool, System of a Down, Prince, Queens of the Stone Age, and more)A sensitive and touchy bass fuzz with tremendous bottom end and a beautiful harmonic structure that sounds blistering with a guitar, too.The harmonic structure can be radically altered using the "PINCH" knob. It adjusts the pulse width of the waveform.In the leftmost position, the waveshape is quite symmetrical which produces a smooth creamy sound. Turning it up slightly introduces lovely intermodulation distortion. Turning it clockwise narrows the waveshape into asymmetrical pulses, making the tone reedier and brassier. This also introduces an unusually smooth 'gating' action, which gives you an absolutely eerie silence between notes.At most settings you will notice that low frequency pressure is preserved. This circuit has a frequency response that con