Electro-Harmonix Percolator Harmonic Saturator A modern reimagining of the rare 1970s Harmonic Percolator circuit, delivering a wide range of reactive drive and fuzz tones. From chewy overdrive to gated, sputtery fuzz with octave-like textures, it responds dynamically to picking and guitar volume while offering expanded modern control. Key Features Asymmetrical clipping circuit inspired by the vintage Harmonic Percolator design Wide gain range: smooth transistor-style drive through aggressive fuzz saturation BIAS control for shifting between smooth distortion, gated fuzz, and pseudo-octave textures HARMONICS control adjusts input gain and saturation intensity DRIVE/FUZZ toggle switches between diode-clipped fuzz and raw overdrive character BALANCE control sets overall output level for precise gain staging Internal trim pot for additional gain and enhanced sub-octave response True bypass relay switching with optional momentary footswitch mode for stutter-style effects What’s Included Electro-Harmonix Percolator pedal 9V battery (included by manufacturer) Quick start documentation Why it stands outThis is not a standard fuzz—it's highly interactive and unstable in a musical way. The combination of bias control, asymmetrical clipping, and internal gain shaping makes it especially useful for players who want fuzz that reacts to touch, volume changes, and dynamics rather than sitting as a static effect.