Butterfly Effects Dobbo

The Butterfly Effects Dobbo is a stereo granular effect pedal, and it is the debut pedal from the Belgian brand Butterfly Effects¹. Where a conventional delay pedal repeats what you played, a granular pedal takes small bits of sound, called grains, and rearranges them into something new. Delicious Audio describes the Dobbo as "a stereo granular effect pedal designed not just to process your sound, but to play with it"². The result, in their words, "can be anything from lush, swelling clouds of ambience to stuttering, rhythmic textures, all generated from your original performance"².

The pedal was unveiled in April 2025³. Guitar Pedal X later gave it a Silver award in its 2025 round-up of the best new modulation, pitch, utility and multi-FX pedals of the year⁴.

What granular means here

Granular synthesis works by slicing audio into very short grains and playing them back on the pedal's own terms. On the Dobbo, the pedal is constantly recording into a buffer, and the grains are pulled from a delay window of up to 5 seconds⁶². Each grain lasts from 10 milliseconds to a full second, set by the Size knob². Grains can be played back forward, in ping-pong, or in reverse⁶, and Pitch sets their pitch with tape-like re-pitching, in smooth, stepped, or octave-only modes⁶.

Hold mode captures that constantly recording buffer, freezing the last moments of audio so you can manipulate them indefinitely with all the controls⁶². Grain envelope modes shape whether those grains land as percussive hits or textural washes⁶.

The controls

The face of the pedal carries seven knobs, five switches, and a single soft switch¹. The core knobs work like this:

Chance is the control that gives the Dobbo its "playground" character: rather than one random wobble, it scatters four parameters at once, each with its own amount of randomness⁶. Guitar Pedal X's unveiling coverage described the pedal's randomisation across those four key variable parameters⁶.

Connections, presets and MIDI

The Dobbo has a high impedance stereo input and stereo outputs, plus an expression/MIDI jack¹. The input accepts a TS mono plug or a TRS stereo plug, and the back panel carries separate Out Left and Out Right jacks⁵. MIDI external control is supported, including MIDI clock modes, and an expression pedal can be used for hands-free control⁶¹.

There are eight preset slots for storing and recalling settings, along with tap tempo⁶¹. A USB-C port handles firmware updates¹, and the manual for Dobbo v1.2 runs 27 pages⁶, published by the maker as a PDF⁵.

Size, price and how it compares

Guitar.com's reviewer notes the pedal is roughly the same size as a Little Big Muff Pi¹. On price, figures vary by currency and date: Guitar.com lists €350 as of October 2026¹, while Guitar Pedal X reported £425 for the second batch in June 2025, with one UK buyer paying a total of €496 including shipping and customs fees⁵.

For context on where it sits, Guitar Pedal X placed the Dobbo near Discomfort Design's mono Phantom Limb when it unveiled the pedal in April 2025³. The Dobbo's difference is its stereo panning and reverb, its Chance randomisation across four parameters, and its preset and MIDI facilities.

What reviewers said

Guitar.com's Jason Mays reviewed the Dobbo in October 2026 and rated it 9 out of 10¹. Pedal of the Day's take on the demo was blunt about the stereo payoff: "this thing sounds INCREDIBLE IN STEREO"⁶. Guitar Pedal X's Stefan Karlsson went deep on how to make use of the pedal in a piece published in July 2025, covering where it shines and how best to work with it⁵, and his site awarded it Silver in its 2025 pedals-of-the-year round-up⁴.

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