The Electro-Harmonix Pico Atomic Cluster is an Electro-Harmonix octave pedal, currently around $124.67. Close alternatives include the Roger Mayer Octavia and the Roger Mayer Octavia Classic. It pairs well with the Fender Deluxe Reverb and the 1959 Fender Tweed Deluxe.
Electro-Harmonix Pico Atomic Cluster
Electro-Harmonix · pedal
The Electro-Harmonix Pico Atomic Cluster is a spectral decomposer that reduces the frequency resolution of your instrument to create a wide range of glitchy, synth like and arpeggiated effects in a tiny enclosure. An ATOMS control sets the number of simultaneous resonant oscillations, producing more pixelated, glitchier sound as oscillations are reduced, while a SPEED control adjusts the oscillation refresh rate from rhythmic effects to complete random chaos. From lo fi glitch and auto arpeggios to ambient synth pads, it is an experimental texture machine. It suits experimental, ambient, electronic and adventurous players who want bit crushed, granular, arpeggiated and synth pad textures unlike anything a normal pedal produces.
- synth
- ambient
- experimental
- glitchy
- electronic
- normal guitar tone
- resonant
- ambient synth pads
Price updated Aug 27, 2026
Genres the Electro-Harmonix Pico Atomic Cluster is commonly used in
- Ambient
- Experimental
- Electronic
- Post Rock
cited
Inferred from shared tonal signals, not a stated genre tag.
Amps that pair well with the Electro-Harmonix Pico Atomic Cluster
Pedals that stack with the Electro-Harmonix Pico Atomic Cluster
Tech 21 SansAmp
Tech 21
9% matchTech 21 SansAmp leans toward analog warmth, and that's a real, usable character to pair with
Univox Super-Fuzz
Univox
9% matchUnivox Super-Fuzz leans toward octave, and that's a real, usable character to pair with
Keeley Halo
Keeley
6% matchKeeley Halo's ambient voice goes after Electro-Harmonix Pico Atomic Cluster in the signal chain — it's not there to compete with Electro-Harmonix Pico Atomic Cluster's own ambient character — goes in the amp's FX loop (or last, into a clean amp)
Alexander Pedals Radical Delay
Alexander Pedals
6% matchKeep Electro-Harmonix Pico Atomic Cluster's ambient voice out front: Alexander Pedals Radical Delay goes after Electro-Harmonix Pico Atomic Cluster in the signal chain so its pristine voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)
Cheaper alternatives
Boutique & premium upgrades
Subdecay Octave Theory Octave Modulator Synthesizer
Subdecay
65% similarityShared character: mono_synth, resonant
Mu-Tron Octave Divider
pedal
64% similarityShared character: mono_synth
Boss OC-2 Octaver
Boss
64% similarityShared character: mono_synth
Death By Audio Micro Harmonic Transformer
Death By Audio
90% similaritysimilar tone character
EarthQuaker Devices Rainbow Machine
EarthQuaker Devices
90% similaritysimilar tone character
Similar charactersee all similar tone character →
Roger Mayer Octavia
Roger Mayer
63% similaritySimilar voicing: ambient
Roger Mayer Octavia Classic
Roger Mayer
63% similaritySimilar voicing: ambient
Death By Audio Robot
Death By Audio
63% similarityShared character: mono_synth
Red Witch Synthotron V1
Red Witch
92% similaritysimilar tone character
Meris MR Hedra
Meris
90% similaritysimilar tone character
Pigtronix Space Rip Pwm Synth
Pigtronix
90% similaritysimilar tone character
See all alternatives to the Electro-Harmonix Pico Atomic Cluster (cheaper + boutique) →
Questions people ask
What are good alternatives to the Electro-Harmonix Pico Atomic Cluster?+
The closest matches in character are the Roger Mayer Octavia, the Roger Mayer Octavia Classic, the Death By Audio Robot. Budget picks: Behringer Octavia Octave Fuzz, EarthQuaker Devices Tentacle V2. Boutique upgrades: Subdecay Octave Theory Octave Modulator Synthesizer, Mu-Tron Octave Divider, Boss OC-2 Octaver.
What pairs well with the Electro-Harmonix Pico Atomic Cluster?+
Strong matches from rig and tone-complementarity evidence: Fender Deluxe Reverb, 1959 Fender Tweed Deluxe, Tech 21 SansAmp — Fender Deluxe Reverb's own spring character is the real reason this is worth trying.
How much does the Electro-Harmonix Pico Atomic Cluster cost?+
Around $124.67 (live listing price, updated Aug 27, 2026).