With its funky hand-painted finish and its sensitive, harmonic fuzz, the Zvex Woolly Mammoth has what it takes to bring expansive fuzz tones. A Pinch knob alters the pulse width of your fuzz's waveform; just by turning the knob, bring your fuzz from symmetrical waves to random, chaotic pulses of sound. Most impressively is the fact that the Woolly Mammoth has a frequency response that dips multiple octaves below the range of human hearing - so make sure you're ready for some ground-shaking lows.