Electro-Harmonix Pico Atomic Cluster Spectral Decomposer Pedal

The Electro-Harmonix Pico Atomic Cluster Spectral Decomposer takes guitar effects into completely new sonic territory. Unlike traditional effects pedals, the Atomic Cluster breaks down your instrument’s signal at a spectral level and reconstructs it into a wide range of musical, rhythmic, and experimental textures.

Using a powerful proprietary algorithm, the pedal reduces the frequency resolution of your signal and rebuilds it through a series of resonant oscillations. The result is everything from lo-fi glitch textures and auto-arpeggiated rhythms to shimmering ambient synth-like soundscapes.

Spectral Sound Design

The Atomic Cluster transforms your tone by decomposing the incoming signal into atomic fragments and re-synthesizing them in real time. This process produces uniquely digital textures that feel somewhere between a glitch processor, synthesizer, and ambient sound generator.

It responds dynamically to your playing, meaning subtle picking changes can dramatically alter the rhythmic and harmonic patterns created by the pedal.

Intuitive Creative Controls

The pedal’s control layout makes exploring these complex sounds surprisingly simple. The ATOMS control adjusts the number of simultaneous resonant oscillations. Turning it up produces dense, full-spectrum textures, while lower settings create minimal glitch effects and pixelated rhythmic patterns.

The SPEED control adjusts how quickly the oscillations refresh. This can create slow evolving ambient textures or rapid rhythmic pulses, and can be synced using the tap tempo function for precise timing in live performance.

Shape Your Texture

The MODE button toggles between SHARP and SMOOTH transition envelopes. SHARP mode creates tighter, rhythmic glitch patterns while SMOOTH mode generates flowing ambient textures that blend seamlessly into atmospheric soundscapes.

The VOL and BLEND controls allow you to balance the effect with your clean signal, making it easy to integrate the Atomic Cluster into any pedalboard setup.

Compact Pico Series Design

Housed in Electro-Harmonix’s ultra-compact Pico chassis, the Atomic Cluster delivers cutting-edge sonic experimentation without taking up valuable pedalboard space. Despite its small size, it offers deep creative potential for guitarists, bassists, and electronic musicians alike.

Features

• Unique spectral algorithm that breaks down and re-synthesizes your signal
• Creates glitch, lo-fi, rhythmic and ambient synth-style textures
• ATOMS control adjusts number of resonant oscillations
• SPEED control sets oscillation refresh rate
• Tap tempo support for rhythmic timing
• MODE button switches between SHARP and SMOOTH envelopes
• VOL and BLEND controls for output level and wet/dry mix
• Buffered bypass preserves signal integrity
• Ultra-compact Pico chassis
• Power supply included

Frequently Asked Questions

What does the Atomic Cluster Spectral Decomposer do?
It breaks down your signal using a spectral algorithm and rebuilds it into glitch, rhythmic, lo-fi and ambient synth-like textures.

What does the ATOMS control do?
The ATOMS knob adjusts how many resonant oscillations are used to reconstruct your signal, shaping the density and complexity of the effect.

Can the effect be synced to tempo?
Yes. The SPEED control supports tap tempo, allowing the rhythmic oscillations to synchronize with your playing or song tempo.

Is the pedal suitable for instruments other than guitar?
Yes. The Atomic Cluster works well with guitar, bass, and synthesizers.