Mutable Instruments Marbles

^# 59

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$179.55 Price Tier: Standard

4.0 (1)

3 Critic Reviews

1 Review

This product is Vintage or Discontinued

Find out who is using Mutable Instruments Marbles

5 wishlisted

31 saved

Page last updated Jun 10, 2026

Pricing and availability

We compare 600+ stores and found this item at 1 store. Prices updated June 10, 2026.

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Price

5.0 (20)

$179.55 1 available New

$299.41 10 available Used

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Average Price: $239

Standard/Professional

$149

$350+

Price Tier

In the Modular Synthesizers category, Mutable Instruments Marbles is priced in the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

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Standard

High-end

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Description

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Marbles is a source of random gates and voltages, which offers an extensive amount of (voltage) control on all the different flavors of randomness it produces.

The module gives the musician many different ways of imposing structure on the random events generated by the module: synchronization to external clocks, control of the repetition or novelty of the generated material, quantization of the voltages, or randomization of gates or voltages generated by traditional sequencers.

Product specs

Brand	Mutable Instruments
Model	Marbles
Finish	Silver
Year	2019 - 2025
Made In	France
Categories	Eurorack Modules and Cases, Synth Modules
Horizontal Pitch	18HP
Modular Synth Format	Eurorack
Synth Module Function	Clock, Quantizer, Random, Sequencer

FAQs

What is the primary function of the Mutable Instruments Marbles module?: The Mutable Instruments Marbles is a Eurorack module designed to generate and manipulate random sequences, functioning as a clock, quantizer, and random source to create evolving patterns and rhythms.
Can the Mutable Instruments Marbles sync with an external clock?: Yes, Marbles can sync with an external clock, allowing it to integrate seamlessly with other modules in a Eurorack system for synchronized pattern generation.
How does the Mutable Instruments Marbles handle randomness in sequences?: Marbles offers a range of randomness control, allowing users to adjust the degree of randomness in timing and pitch, from completely predictable sequences to highly randomized patterns.
What are the dimensions of the Mutable Instruments Marbles module?: The Mutable Instruments Marbles occupies 18HP in a Eurorack setup, making it a moderately sized module that fits easily into most modular systems.
Is the Mutable Instruments Marbles suitable for beginners in modular synthesis?: Yes, Marbles is user-friendly and provides a versatile introduction to random sequencing, making it suitable for both beginners and experienced modular enthusiasts looking to explore generative music.

Videos

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DivKid

Mutable Instruments - Marbles (random sampler) *In Depth Eurorack Demo Tutorial*

DivKid

Mutable Instruments - Marbles *Feature Jam & Walkthrough*

DivKid

Generative Patching 4.1: Intro to Mutable Instruments' Marbles

Chris Meyer: Learning Modular + Alias Zone

Mutable Instruments Marbles tutorial, for humans

Bart Decrem

Mutable Instruments Marbles | Random Sampler - extended version

Cinematic Laboratory

Mutable Instruments Marbles Demo

Ask.Audio

Reviews

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PROS

Excels in generating random voltages with high precision
Ergonomic design with intuitive layout for ease of use
Offers extensive voltage and time range options
Acts like a pre-patched generative system, saving HP and setup time
Deja-Vu section allows for looping and sampling of CV patterns
Built-in quantizing methods for musical randomness
Provides multiple paradigms for note output responsiveness
Enhances creativity in crafting evolving patches
Pairs well with other Mutable Instruments modules for sound sculpting

CONS

Full potential not realized without understanding its workings
Requires external learning resources for optimal use

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Mutable Instruments Marbles.

Use cases and applications

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As a quantizer, Marbles can process other sequencers' outputs, and it's fun to use as a chiptune-style oscillator.
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Marbles can compose stoner rock autonomously, making it an excellent tool for inspiration and idea generation for musicians.
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The CV record function is highlighted as a unique feature, allowing users to input complex LFOs and utilize Deja Vu for gradual transformation.
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Marbles can trigger Erica Sample Drum in grids mode, enabling fixed 4/4 melodies with a lead and bass, while CVing Deja Vu for evolving changes.
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Marbles is favored for non-pitch applications, such as controlling sampler playback points and lengths, highlighting its versatility beyond melodic uses.
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Marbles excels in creating evolving basslines for high BPM tracks, especially when locked at a 3-note length and modulating spreading and bias.
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Other

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Color-blind users appreciate the addition of a color-blind mode in recent firmware updates, improving accessibility.
Source

Comparisons

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Marbles requires fewer additional modules like quantizers, attenuators, and mixers compared to assembling similar functionality from multiple separate modules.
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Marbles is often compared to Turing Machine + quantizer for those seeking more traditional modular sequencing, or Bloom for greater control in random melodic sequencing.
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User experience

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Some users mention swapping Marbles for smaller versions like Pachinko due to space constraints, but note Pachinko's interface is less intuitive.
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The original MI Marbles user interface is praised for its clean and playable design, in contrast to micro versions which can feel cramped.
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Features and functionality

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Marbles' rhythm generator includes undocumented bonus modes that enhance its versatility beyond standard settings.
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Marbles' trigger section can be used with Traffic to expand rhythmic possibilities or as a clock divider for external devices.
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Marbles' X side can be set to slew, locking in sequences with Deja Vu slightly left and using X outputs for semi-random modulation.
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Marbles includes bias and spread controls on CV outputs that occur before quantizing, providing powerful customization for random and semi-random patterns.
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Marbles can record incoming CV and distribute it over three sample and hold modules using its external processing mode, accessible via the button below "length".
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Marbles can be used as a 3-channel shift register, adding depth and functionality beyond basic random melody generation.
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Mods and upgrades

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Some users have flashed Marbles with modded firmware for saving and recalling Deja Vu settings, allowing sequences longer than 16 steps.
Source

Critic Reviews

Mutable Instruments Marbles review | MusicRadar

musicradar.com

Marbles by Mutable Instruments is an innovative module blending rhythm generation and random pitch locks into a versatile musical tool. It's praised for its clever design and flexibility, offering extensive random CV and gate options that encourage experimental creativity. While the module's LEDs can be hard to distinguish, and the lack of a reset input may limit some users' workflow, its ability to lock patterns and introduce varied randomness makes it a powerful asset for evolving patches. Its built-in quantiser and modulation controls further enhance its appeal, making it great value for any modular setup.

positive

Full Review

Mutable Instruments Marbles

soundonsound.com

Mutable Instruments Marbles is a standout in the modular synth world, offering a compelling mix of randomness and musicality. It excels with its three trigger streams and four voltage outputs, enhanced by the intuitive Deja Vu feature for reusing random patterns. The module’s ability to synchronize with external clocks and generate kick/snare patterns adds versatility. While the interface may require some initial study, the learning curve is rewarded with a rich array of rhythms and patterns. The cleverly designed Spread and Bias controls, along with six preset scales, enhance musical exploration. Despite a few complex features, Marbles’ seamless functionality makes it a superb addition to any modular setup.

positive

Full Review

Mutable Instruments - Marbles · Tech Review ⟋ RA

ra.co

Mutable Instruments Marbles is a standout in Eurorack design, bringing controlled randomness to the forefront of synth systems. Its ability to generate both patterns and melodies makes it a versatile hub, replacing several modules for many users. The module excels in ease of use, allowing even novices to produce dynamic, evolving sequences without diving deep into manuals. Its intuitive interface and performative capabilities, like the Deja Vu section, provide hands-on control for locking and manipulating random sequences. While not introducing new functions, its clever integration and focus on playability make Marbles an indispensable tool for musicians seeking creativity and spontaneity in their setups.

positive

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4.0 out of 5

Based on 1 Review and 1 Rating

5 star

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xaqary

5454

almost 6 years ago

Value

The amount of function & features Mutable packs into their kit is amazing. Marbles does the same. Powerhouse of module.

Artist usage

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Andrew Huang

Singer, Guitarist

First Of October

Verified via YouTube

Visible in this September 8, 2019 video at 2:00.

Richard Devine

Keyboardist, Composer

Verified via YouTube

uses in this December 17, 2019 video

Jonas Bjerre

Singer, Guitarist

Mew

Verified via Photo

In a photo from an interview with Martin Yam Møller, Jonas Bjerre's Eurorack setup is clearly shown to include the Mutable Instruments Marbles, positioned below the top right of his arrangement.

Kimihide Kusafuka

Keyboardist, Music Producer

Verified via Threads

In a post on Threads by 草深公秀 (@k2kinky), it is evident that Kimihide Kusafuka uses the Mutable Instruments Marbles module.

Afterlife

Music Producer

Verified via Facebook

In a studio tour video posted on Facebook, Steve Miller, known as Afterlife, showcases his collection of instruments, including a Mutable Instruments Marbles.