Specifications:Pedal Dimensions (LxWxH): 4.70" x 2.38" x 1.82"Uses 9V DC power supply with a (-) polarity on the middle pin (typical Boss-style power supply)ZVEX Effects Vexter Series Wooly MammothFuzz Effects PedalDesigned for bass, a favorite for guitar, this incredibly sub-frequency-preserving unit will hold on to the lowest lows like no fuzz ever heard before. It features a gentle gate for silencing your instrument between notes or phrases, and has an EQ control that smoothly selects between more bass and more treble.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.Vexter Series pedals are lower priced, featuring silk-screened art. The parts inside Vexters are identical to the hand painted models.ControlsOutputDesigned for smooth repeatable level settings.EQTilts the spectral response, turning to the left adds lows and softens the highs, then mids, and finally reduces lows.PinchThe harmonic structure can be controlled with this knob. It adjusts the pulse width of the waveform.WoolAdjusts the amount of fur around the note.