Muzzle is an analog vactrol based 12dB/octave low pass filter and low pass gate. The resonance goes from smooth to increasingly acidic and bubbly towards the max setting. Muzzle can create very interesting percussive sounds when in self-oscillation which can be dynamically controlled through the ping input which also activates a circuit that adds extra grit. The white LED is part of this circuit! Muzzle is perfect for creating additional harmonics and give life to any dull/sterile sound!