The Beetronics Swarm Fuzz Harmonizer is a Beetronics fuzz pedal, currently around $249. Close alternatives include the EarTech Earthquaker Devices Data Corrupter Modulated Monophonic and the EarthQuaker Devices Eqd-Bit. It pairs well with the Magnatone 280 and the Gibson Les Paul LP-1 Preamp.
Beetronics Swarm Fuzz Harmonizer
Beetronics · pedal
The Beetronics Swarm Fuzz Harmonizer is an analog fuzz harmonizer from the Royal Series, handmade in Los Angeles. The SPECIES selector chooses from nine pitch intervals for the harmony voice, ranging from octaves to musical thirds including major third intervals. Queen and Drone knobs mix two harmony voices independently. Flight and Sting controls sweep, pulse, or detune the harmonized voices. The core fuzz is thick, buzzy, and gated, suppressing background noise when the instrument is not playing. 9V DC center-negative, approximately 7mA. Power supply not included. Pedal size roughly 5.5 x 4 x 2.75 inches. Reviewed by MusicRadar and guitar.com.
What stands out
“Tone: thick buzzy gated fuzz with nine selectable pitch intervals from sub-octaves through upper harmonies; Flight and Sting controls add sweep, pulse, and detune modulation to the harmonized voices for synth-adjacent textures”
— from the community notes
“The SPECIES selector covering nine pitch intervals from deep sub-octaves to upper thirds makes it more harmonically adventurous than conventional octave fuzzes”
— from the reviews
“Standout weakness: the pitch tracking has a semi-random element that makes the pedal behave unpredictably, which suits experimental players but frustrates those seeking precise harmonic doubling”
— from the community notes
“Signal-chain interaction: the gated fuzz character ; best placed first in the chain before filter or drive effects to maintain harmonic tracking clarity”
— from the community notes
“The SPECIES selector chooses from nine pitch intervals for the harmony voice, ranging from octaves to musical thirds including major third intervals”
— from the listing
- fuzz
- octave
- thick
- pitch
- harmonic
- tracking
- modulation
- sub
Price updated Oct 25, 2026
Genres the Beetronics Swarm Fuzz Harmonizer is commonly used in
- Experimental
- Rock
- Noise Rock
cited
Inferred from shared tonal signals, not a stated genre tag. - Stoner Rock
cited
Inferred from shared tonal signals, not a stated genre tag. - Electronic
cited
Inferred from shared tonal signals, not a stated genre tag. - Shoegaze
cited
Inferred from shared tonal signals, not a stated genre tag.
Amps that pair well with the Beetronics Swarm Fuzz Harmonizer
Magnatone 280
Magnatone
18% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (fuzzy → modulated)
Magnatone 280 stacks modulated on top of the fuzzy already here
Comes later in the signal chain
Gibson Les Paul LP-1 Preamp
Gibson
tonal matchComes later in the signal chain
Gibson Les Paul LP-1 Preamp layers modulated onto an already fuzzy signal
Magnatone 510
Magnatone
tonal matchComes later in the signal chain
Magnatone 510 layers modulated onto an already fuzzy signal
Pedals that stack with the Beetronics Swarm Fuzz Harmonizer
Catalinbread Adineko
Catalinbread
20% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (fuzzy → modulated)
Put Catalinbread Adineko after Beetronics Swarm Fuzz Harmonizer in the signal chain, clear of Beetronics Swarm Fuzz Harmonizer's own gain stage
Comes later in the signal chain
Fender Blender
Fender
18% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (fuzzy → octave)
Fender Blender stacks octave on top of the fuzzy already here
Beetronics Octahive
Beetronics
18% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (fuzzy → octave)
Run fuzzy into Beetronics Octahive for more octave on top
Pigtronix Echolution
Pigtronix
12% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (fuzzy → modulated)
Keep Beetronics Swarm Fuzz Harmonizer's fuzzy voice out front: Pigtronix Echolution goes after Beetronics Swarm Fuzz Harmonizer in the signal chain so its ambient voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Electro-Harmonix Stereo Memory Man Vintage
Electro-Harmonix
12% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (fuzzy → modulated)
Run Electro-Harmonix Stereo Memory Man Vintage after Beetronics Swarm Fuzz Harmonizer in the signal chain, clear of Beetronics Swarm Fuzz Harmonizer's own gain stage — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Jackson Audio Bloom V2 Compressor/EQ
Jackson Audio
10% matchshapes the dynamic responseShapes how the tone responds to picking dynamics rather than its frequency or gain.
Beetronics Swarm Fuzz Harmonizer leans toward fuzzy, and that's a real, usable character to pair with
Comes earlier in the signal chain
Subdecay Octave Theory Octave Modulator Synthesizer
Subdecay
tonal matchComes earlier in the signal chain
Subdecay Octave Theory Octave Modulator Synthesizer goes in front of Beetronics Swarm Fuzz Harmonizer — pitch tracking is cleanest before anything colours the note
EarthQuaker Devices Swiss Things
EarthQuaker Devices
Cheaper alternatives
Dunlop MXR SUB Machine
Dunlop
58% similarityShared character: mono synth, tight tracking, one octave
EarthQuaker Devices Bit Commander
EarthQuaker Devices
57% similarityShared character: mono synth, tight tracking, one octave
MXR Poly Blue Octave
MXR
57% similarityShared character: mono synth, tight tracking, one octave
EarthQuaker Devices Bit Commander V2
EarthQuaker Devices
55% similarityShared character: mono synth, tight tracking, one octave
Beetronics Octahive V2
Beetronics
49% similarityShared character: tight tracking, one octave, analog
Catalinbread Octapussy
Catalinbread
49% similarityShared character: mono synth, tight tracking, one octave
Similar character
EarTech Earthquaker Devices Data Corrupter Modulated Monophonic
Eartech
59% similarityShared character: mono synth, tight tracking, one octave
EarthQuaker Devices Eqd-Bit
EarthQuaker Devices
55% similarityShared character: mono synth, tight tracking, one octave
EarthQuaker Devices Data Corrupter
EarthQuaker Devices
54% similarityShared character: mono synth, tight tracking, one octave
Pigtronix OCT2
Pigtronix
52% similarityShared character: tight tracking, one octave
Fairfield Circuitry The Unpleasant Surprise
Fairfield Circuitry
46% similarityShared character: mono synth, one octave, noise
JAM Pedals Octaurus
Jam Pedals
45% similarityShared character: mono synth, one octave, analog
See all alternatives to the Beetronics Swarm Fuzz Harmonizer (cheaper + boutique) →
Questions people ask
What are good alternatives to the Beetronics Swarm Fuzz Harmonizer?+
The closest matches in character are the EarTech Earthquaker Devices Data Corrupter Modulated Monophonic, the EarthQuaker Devices Eqd-Bit, the EarthQuaker Devices Data Corrupter. Budget picks: Dunlop MXR SUB Machine, EarthQuaker Devices Bit Commander, MXR Poly Blue Octave.
What pairs well with the Beetronics Swarm Fuzz Harmonizer?+
Strong matches from rig and tone-complementarity evidence: Magnatone 280, Gibson Les Paul LP-1 Preamp, Magnatone 510 — Magnatone 280 stacks modulated on top of the fuzzy already here.
How much does the Beetronics Swarm Fuzz Harmonizer cost?+
Around $249 (live listing price, updated Oct 25, 2026).