
The Pico Atomic Cluster is a compact “spectral decomposer” pedal from Electro‑Harmonix that uses a unique algorithm to reduce the frequency resolution of your instrument signal and create oscillations. With the ATOMS knob you control how many simultaneous resonant oscillations play at once; the SPEED knob sets how quickly the oscillations are refreshed (which also can be set via tap tempo). Additional controls include VOL (output level), BLEND (wet/dry mix), and a MODE button toggling between SHARP (instant transitions) and SMOOTH (fade-transition between oscillations). It aims to deliver anything from rhythmic lo-fi glitches and arpeggio-type sounds to ambient pads and synth-like textures.