Electro Harmonix Blurst Modulated Filter Pedal

The Electro Harmonix Blurst is a modulated filter pedal designed to bring classic synthesiser-style filtering to guitar and bass pedalboards. Unlike traditional envelope filters that respond to picking dynamics, the Blurst uses an internal oscillator to sweep an analogue low-pass filter. This creates consistent, controllable filter movements ranging from subtle animation to dramatic rhythmic sweeps, making it ideal for experimental tones beyond standard wah and envelope effects. The pedal's core is an analogue low-pass filter with adjustable resonance, offering warm, musical sweeps that can sound almost synthesiser-like. It features three modulation waveforms: triangle for smooth sweeps, and rising and falling saw-tooth waves for more aggressive, directional movement. Practical controls include tap tempo with rhythmic subdivisions (quarter note, dotted eighth, triplet), allowing you to lock filter movements to your song's tempo. The Range knob defines the frequency spectrum of the sweep, while the Blend control mixes your dry signal with the filtered sound, preserving your core tone. Best suited for experimental players, sound designers, and musicians seeking to expand their tonal palette, the Blurst integrates seamlessly into modern mono pedal chains. With buffered bypass, expression pedal/CV control options (for controlling range, rate, or filter), and an included power adapter, it's ready for both live performance and studio work. Whether creating ambient soundscapes, glitchy textures, or tight electronic-inspired grooves, this pedal offers a powerful and expressive creative tool for guitarists and bassists looking to push beyond conventional effects.