Eurorack Modules · Models

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Mutable Instruments Plaits

Synthesizer module · France

A 12 HP Eurorack macro-oscillator module with sixteen synthesis models, CV control, dual outputs, and an internal low-pass gate.

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Mutable Instruments Clouds is a Eurorack granular audio processor that captures incoming sound and reshapes it into evolving textures by playing back overlapping grains. A cult-favorite module, its open-source design spawned many variants.

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Doepfer A-110-1

Eurorack module · Germany

The Doepfer A-110-1 is a standard voltage-controlled oscillator (VCO) module for Eurorack, the format Doepfer created. It produces the basic analog waveforms—sawtooth, triangle, pulse, and sine—with control over pitch and pulse width, serving as a fundamental sound source.

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After Later Audio Monsoon

United States

A Eurorack texture synthesizer and granular processor by After Later Audio, adapting the Mutable Instruments Clouds design with the expanded Parasites firmware into a compact panel. It captures and granulates incoming audio for ambient textures, pitch shifting, and time stretching.

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AJH Synth MiniMod Vintage Transistor Core VCO

United Kingdom

A Eurorack voltage-controlled oscillator by AJH Synth, part of the MiniMod series that recreates the discrete transistor-core oscillator of the original Minimoog. It produces simultaneous triangle, sawtooth, and variable pulse waveforms with hard sync and linear FM.

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Mutable Instruments Rings

Eurorack module · France

Mutable Instruments Rings is a Eurorack resonator module that uses physical-modeling synthesis to create plucked, struck, and bowed string- and bar-like tones. It can act as a resonant body for external sounds or as a standalone polyphonic voice.

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ADDAC508 Swell Physics

Portugal

The ADDAC508 Swell Physics is a Eurorack modulation source that simulates a small patch of open ocean, with four buoys floating on a wave surface generated by a Gerstner wave model. As the simulated water moves, each buoy rises and falls and reports its height to one of four CV outputs, producing slow, organic, fluid-like modulation. Controls over the wave parameters and the spacing of the buoys let the four outputs drift independently or move together.

Model

ADDAC207 Intuitive Quantizer

Portugal

The ADDAC207 Intuitive Quantizer is a four-voice Eurorack quantizer that snaps incoming control voltages to musical scales across a 10-octave range. It offers user-definable scales, several quantization modes, and a keyboard mode played from its buttons, and it can handle microtonal scales with more than 12 notes per octave alongside multiple temperaments. Tuning and up to 11 user presets are stored in non-volatile memory for recall.

Model

Mutable Instruments Marbles

Eurorack module · France

Mutable Instruments Marbles is a random sampler Eurorack module that generates correlated streams of random gates and random control voltages, with control over rhythm, distribution, quantization, and deja-vu looping. Like all Mutable Instruments designs it was released as open-source hardware and firmware; the company ceased operations in 2022.

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Mutable Instruments Beads

Eurorack module · France

Mutable Instruments Beads is a texture synthesizer Eurorack module and the successor to Clouds, combining granular synthesis with audio recording and processing in a refined 14 HP design. Like all Mutable Instruments products it is open-source hardware and firmware; the company ceased operations in 2022.

Model

Mutable Instruments Stages

Eurorack module · France

Mutable Instruments Stages is a segment generator Eurorack module whose six configurable segments (ramp, hold, and step types) can be patched into complex multi-stage envelopes, multiple independent envelopes, LFOs, sequencers, or other modulation shapes. Its designs were released open-source; Mutable Instruments closed in 2022.

Model

Mutable Instruments Braids

Eurorack module · France

Mutable Instruments Braids is a macro-oscillator Eurorack module offering dozens of digital synthesis models - from classic analog-style and FM voices to physical modeling and noise - in a single oscillator, and is the conceptual predecessor of Plaits. Its hardware and firmware were released open-source; Mutable Instruments closed in 2022.

Model

Mutable Instruments Tides

Eurorack module · France

Mutable Instruments Tides is a tidal modulator Eurorack module - a digital function generator that produces evolving waveform shapes usable as a low-frequency modulation source, a looping envelope, or a full-range oscillator. The original Tides launched in 2014 and the redesigned 14 HP Tides 2018 followed; both were released open-source and discontinued when Mutable Instruments closed in 2022.

Model

Make Noise QPAS

Eurorack module · United States

The Make Noise QPAS (Quad Peak Animation System) is a stereo analog filter Eurorack module built from four identical state-variable filter cores. It delivers simultaneous low-pass, band-pass, high-pass, and a unique 'Smile Pass' output, with a pre-filter stereo VCA and flexible mono/stereo routing for animated, vocal-like filtering.

Model

AJH Synth MiniMod Discrete Cascaded VCA

United Kingdom

A Eurorack discrete voltage-controlled amplifier by AJH Synth, part of the MiniMod series, built from a discrete transistor cascade to reproduce the gain character of the original Minimoog output stage. It offers both linear and exponential response modes.

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AJH Synth MiniMod Transistor Ladder Filter

United Kingdom

A Eurorack 24 dB/octave transistor ladder low-pass filter by AJH Synth, part of the MiniMod series and modeled on the classic Minimoog filter. It features resonance to self-oscillation and dedicated CV inputs for voltage-controlled cutoff.

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After Later Audio Cara

United States

A Eurorack random voltage and CV source by After Later Audio, a compact adaptation of the Mutable Instruments Marbles design (also sold as uMarbles). It generates clocked random gates and continuous control voltages with controllable rate, spread, and bias for generative patches.

Model

4ms Quad Pingable LFO

United States

The Quad Pingable LFO (QPLFO) is a 12 HP Eurorack module with four independent low-frequency oscillators whose tempo can be tapped or clock-synced through a ping input. A skew control morphs each waveshape between pluck, ramp, and triangle forms, and the channels can modulate, trigger, and reset one another for evolving modulation.

Model

4ms Ensemble Oscillator

United States

The Ensemble Oscillator (EnOsc) is a 16 HP Eurorack module built around sixteen sine oscillators that can be tuned together to chords, scales, or a harmonic series. It blends additive, frequency-modulation, phase-distortion, and wavefolding synthesis with mono or stereo output to explore the range between musical chords and evolving textures.