Modular
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Voltage Processor is designed to pack a lot of features in a small module.Here a some of the features you can achieve with Voltage Processor. You can find how to setup those features in the manual below.Features:• Dual VCA• Stereo VCA• CV Crossfader 2:1• CV Crossfader 1:2• Dual AM• CV PAN• Dual Attenuator• Dual Inverter• Dual Offset generator• Dual Voltage generator• Dual Exponential converter• Logarithmic converter• Dual PWM• Dual CV overdrive• Dual waveshaper• Complex waveshaper• Dual RingMod• RindMod• Compressor• Sidechain compressorDIY-Kit-Type:SMD-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. All SMD parts are pre-soldered, only trough-hole parts to solder. For build guide, more info, videos etc. please check the buttons below.
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The Bumm Bumm Garage VCF is a voltage controlled low and high pass filter. It features everything that you need for creating unique timbres in your voices or giving them a designated place in the mix. Just plug your audio in the HPF or LPF jack, connect the output to the next stage in your chain and start shaping your sound!The circuit of the filter is based on a Korg MS20 adaptation by René Schmitz. It has a spacious board layout and a reduced variety of component values to ensure the smoothest assembly possible.Features:• Two in one: Low (LPF) and high pass filter (LPF)• Modular fun: Cutoff CV with attenuation• Linear & anarchic: Variable resonance with soft and hard responseDIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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Ilse is an elegantly minimal, yet fully functional synthesizer voice in a compact 10 HP Eurorack module. The only thing you need to let it meow is a CV source to trigger its 1V/Oct frequency input (or a MIDI to CV converter and a MIDI sequencer) . Because it has a low part count it is ideal for Eurorack beginners or entry-level DIY projects.Ilse is named after a cat, living in the legendary “Villa” in Weimar, Germany. The “Villa” was a place where a community lived and came together. Many underground concerts and parties took place here before the house got sold, renovated, and the mayor moved in. We created the graphics on the aluminum face-plate in her memory. Ilse (the synth) makes great acid sounds, so it was only logical to illustrate a cat tripping. Turn the knobs to make her look around or roll her eyes.Ilse is designed to be affordable, easy to build, yet flexible, and feature rich. It is a synthesizer voice for your Eurorack, but can even be driven without a rack using two 9V batteries (not included).Ilse is fully open source (KiCad schematic and layout is available in a git repository) and inspired by Syntherjack’s single-chip synthesizer Totoro. Check out his website with nice explanations, e.g. on the filter (we use the same filter on Ilse). We extended the design for external voltage control on filter, oscillators and LFO. Unlike Totoro, Ilse is designed around a unique oscillator design, which integrates the exponential conversion directly into the oscillator core. This results in an efficient circuitry saving you build time, parts and costs.PCB and face-plate are manufactured in the EU.Features:Functions• Two saw tooth oscillators• Bridged-T low pass filter with resonance control• Triangle LFO with speed control, and routing to filter and/or oscillators• Simple mixer and detune for oscillatorsControls• LFO Speed, Filter Modulation, Osc Modulation• Filter Cutoff, Filter Resonance• Tuning, Osc2 Detune• Osc1/Osc2 (Filter in)• Output volumeInput/Output• 1V/Oct CV for oscillators (0-5V)• Gate (0-5V)• Filter cutoff (0-5V)• External filter input• Volume controlled output• LFO Speed (linear, via solder pad on back, 0-8V)• Oscillator 2 detune (linear, via via solder pad on back, 0-8V)DIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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The Garden Listener Eurorack module detects conductivity variations on living beings’ surface and transforms them into MIDI notes and CV signals. For once, leave those LFOs alone, and let any living conductive being modulate your signals. It detects conductivity variations on living beings’ surface and transforms them into MIDI notes, ranging from C-1 to C8, and CV signals (0 – 5V).Its behavior can be tamed through the one-knob menu from which you can choose and modify:• probes’ sensitivity (making it more or less sensitive to current variations)• scale (chromatic, major, minor, indian and arabic)• MIDI channel (from 1 up to 16)• LEDs’ brightnessIt generates trigger, gate, and CV (1V/oct). The CV output behavior can be modified via an octave selector which acts as a “CV equalizer” from which you can choose to generate CV only if the respective MIDI note lies within a certain octave range.The MIDI output allows you to take advantage of the sound of either any synthesizer equipped with a MIDI port or any VST in your DAW.The module comes with 3.5mm white probes and a set of snap-on adhesive reusable electrode pads. A MIDI-TRS type A adapter (not included) is required for the MIDI output.DIY-Kit-Type:SMD-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. All SMD parts are pre-soldered, only trough-hole parts to solder. For build guide, more info, videos etc. please check the buttons below.
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The CubuSynth 4Decay offers 4 envelopes for percussive and plucky sounds. The gate inputs are normalized to the jack below, which lets you use the same gate signal for 2, 3 or all 4 channels at the same time.Features:• 4 channel Decay envelope• Normalized Gate inputs• 1ms to 2 second Decay time• LED per channel to indicate Output voltage• Output at 5V maxDIY-Kit-Type:SMD-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. All SMD parts are pre-soldered, only trough-hole parts to solder. For build guide, more info, videos etc. please check the buttons below.
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One of the most necessary modules for Eurorack, the CubuSynth 4Mix is a 4 channel mixer that can be used for audio or CV signals. It features a normal and a phase-inverted output.Features:• 4 channel Mixer• Usable for CV and Audio signals• Normal & Phase inverted Outputs• high input impedance• Reverse Power protectionDIY-Kit-Type:SMD-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. All SMD parts are pre-soldered, only trough-hole parts to solder. For build guide, more info, videos etc. please check the buttons below.
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The CubuSynth 4TRG has 4 independent Random Gate skippers with probability knob per channel. The First channel can turn into a Clock generator when no cable is inserted into the Gate input. The Output is then Normalized to the other channels (2-4).It can also create “ratcheting” gates, when the Gate input on channel 1 goes to 2,5V instead of the normal 5V. The knob will then determine the Ratcheting speed.Features:• 4 channel Probability Gate Skipper• Normalized Gate inputs• Probability knob per channel• First channel turns into clock generator when no gate is present• Outputs 5V Gate signalsDIY-Kit-Type:SMD-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. All SMD parts are pre-soldered, only trough-hole parts to solder. For build guide, more info, videos etc. please check the buttons below.
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You can never have too many VCAs! This is why we packed 4 of them into only 4 HP. Modulate the Amplitude of Audio signals or the Modulation strength of CV.The CV inputs are normalized to the input below, which lets you use the same control voltage for more channels simultaneously. Any output (channels 1-3) that stays unconnected, will be mixed into the output of channel 4.Features:• 4 channel Audio / CV VCA• Normalized CV inputs• high input impedance• Versatile Unity Gain Mix Output• Full volume with 5V CV input / Accepts CV input up to 12V (~2.5x Gain)DIY-Kit-Type:SMD-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. All SMD parts are pre-soldered, only trough-hole parts to solder. For build guide, more info, videos etc. please check the buttons below.
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The CubuSynth 6xLevel module is a 8 HP passive attenuator, which allows scaling of CV and audio signals. The inputs are normalized from the outputs above, which allows passive multiplication with attenuation. The normalized path is attenuated by the potentiometer before, so you can also create very subtle changes (e.g. Fine tune a VCO). The silver lines on the front panel mark the normalisation routing.Note, that it is a passive module, for multiplying non-precise voltages. It is recommended to not use more than 3 outputs from the same input.Features:• 6 individual attenuators• flexible passive multiple (1x6, 2x3, 3x2, 1x4 + 1x2)• normalized inputs from output aboveDIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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The CubuSynth ADSR is a very versatile envelope generator. It features linear or exponential curves, TIME CV which shortens the overall time of the whole envelope, different mode settings, Level CV (saves an extra VCA) and normal (0V to +5V) and inverted (0V to -5V) Outputs.The TIME CV makes an excellent modulation input for either envelope modulation or LFO frequency modulation. It also has a PUNCH switch which holds the maximum level for a few milliseconds before starting the Decay stage. This is very useful for adding extra punch to short percussive envelopes.Features:• GATE and TRIGGER inputs for retriggering• MODE switch that allows selection of normal ADSR, Gated looping, or full LFO-style Looping mode• LEVEL CV for additional Volume control / Velocity input (Volume on 100% when nothing plugged in)• TIME CV for very dynamic modulations• Switch for linear or exponential mode• Two Outputs (normal 0V to +5V and inverted 0V to -5V)DIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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The Arkarion is a full-featured analog synthesizer voice in Eurorack format, designed for creative exploration and dynamic signal flow. Combining the warmth of analog circuitry with a digitally controlled internal routing system, Arkarion offers a unique blend of structure and unpredictability. It's an expressive, performance-ready instrument for musicians seeking deep modulation, generative possibilities, and hands-on control.At the core of Arkarion lies a digitally interpreted “DNA patch system” — a signal-routing framework inspired by genetic code. This system unlocks over 65,000 modulation and audio paths, allowing for rich, morphing textures that evolve at the press of a button or incoming gate.Features:• Complete analog synthesizer voice with digital routing control• 2 analog VCOs with selectable waveforms• MIDI input with pitch CV and gate outputs• Envelope generator with rise/fall stages, loop and gated loop modes• 2 CV-controllable LFOs for versatile modulation• Gate-triggered random voltage source• Multimode filter: lowpass, bandpass, highpass, allpass (switchable)• Tape-style analog delay with CV control• Digitally controlled “Gene Modification” knob for live routing mutation• 16-bit routing architecture: 65,536 possible patch configurations• 64 patch memory slots (8 banks of 8 presets)• Internal VCAs for modulation depth control• Randomize routing via button or external gate input• LED indicators visualize current patch structure and modulation pathsDIY-Kit-Type:SMD-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. All SMD parts are pre-soldered, only trough-hole parts to solder. For build guide, more info, videos etc. please check the buttons below.
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The CubuSynth Dual CS-20 VCF is a versatile module that combines two 12db filter cores in a dual/stereo configuration. It is inspired by the iconic Korg MS-20 synthesizer, offering similar sound characteristics while the resonance can be pushed even further.The module provides multiple filter modes, including low pass and high pass, which can be blended together to create a diverse range of filter responses. This allows you to shape your audio signal in various ways, from smooth and warm low pass filtering to more aggressive high pass filtering.One of the standout features of the CS-20 VCF is its self-oscillating resonance capability. When the resonance is turned up, the filter produces a sine wave that can be used as an additional sound source. This feature adds to the versatility of the module, allowing you to create complex and evolving sounds and even cross-FM modulation possibilities.The frequency and resonance parameters can be controlled via control voltage (CV) inputs. The frequency CV input can be attenuverted, meaning it can both attenuate and invert the incoming CV signal. This gives you precise control over the modulation depth and direction for frequency modulation.The resonance CV input includes an attenuator, allowing you to adjust the modulation depth for the resonance parameter. This feature gives you the flexibility to add dynamic and expressive modulation to your sounds.Additionally, the CS-20 VCF provides a 1V/Oct input, which allows you to control the filter's frequency using a standard 1V/Oct control voltage. This input is stable over a range of at least 2 to 3 octaves, ensuring melodic tracking and integration with other modular synthesizer components.Overall, the CubuSynth Dual CS-20 VCF offers a powerful and flexible filtering solution with intuitive routing and modulation options. It is designed to inspire creativity and provide a wide range of sonic possibilities for your modular synthesizer setup.Features:• 2 individual Filter cores with common Frequency and Resonance controls• CV control over Frequency and Resonance for each Filter core• Self-oscillating Resonance with LED feedback circuit (visible on the Front)• 1 V/oct input, tracking over 2~3 octaves• Frequency Range: 22 Hz - 20 kHz• Blend between LP / HP Filter modes• Ability to use as 2 pole (12db) stereo HP/LP Filter, 4 pole (24db) mono LP/HP or a Band Pass (12db) Filter• Cross FM Modulation possibleDIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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The CubuSynth Dual Vintage VCA is a nice sounding, zero bleed, analog Voltage controlled amplifier based on the LM13700 chip.It can work as two independent VCAs or as a stereo unit, and CV input 1 on channel 1 is normalized to the CV input 1 on channel 2. (same signal can control both channels).Features:• LEVEL Knobs set the Amplitude for each channel• CV AMOUNT Attenuators for the Control voltage from CV input 1• Second CV input per channel, without attenuatorDIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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The CubuSynth Engine is a dual analog VCO with wave shaping functions, internal modulations and a chaos generator. It is based around the 3340 chip and features 4 Waveforms + Wavefolder per VCO and 4 Modulated Outputs, all simultaneously.The CubuSynth Engine can work as 2 independent VCOs, or as one complex FM oscillator. With its inernal "Chaos Engine" it creates semi-random voltages, generated by the 2 oscillator cores. This signal is then normalized to the CV inputs for Pulse width modulation and exponential FM. Each of the 2 VCOs offers a switch to select one of the 4 waveshapes to be used by thewavefolders, and the linear FM input normalisations.Features:• 2 VCO cores (voices)• 4 simultaneous wave forms per voice + 4 Modulation Outputs• Wavefolder per voice• Pulse Width modulation• Linear and exponential FM inputs• 1 V/oct tracking stable over up to 10 octaves• Chaos generator with external clock input• Complex internal normalized modulationsDIY-Kit-Type:SMD-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. All SMD parts are pre-soldered, only trough-hole parts to solder. For build guide, more info, videos etc. please check the buttons below.
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The Exhaust adds many features to your Engine VCO module like Sub-octaves, Mixing and a Gate generated by the Chaos signal.You can select one of the two VCO cores of the engine to produce square waves one and two octaves below the oscillators frequency. You can blend between -1 and -2 octaves and set the volume they are mixed into the main “Mix” output.The knobs “VCO1” “VCO2” and “AM” set the level of the selected waveform of each VCO and the AM output from the Engine to the main mix. The “Ext In” input is normalled from the RM output, but you can plug in any other signal to go to the main mix. The V Ref sets a Voltage between 0V and +10V which compares against the chaos signal from the Engine (Chaos attenuator on the Engine doesn't matter). Whenever the chaos signal is higher in voltage than the knob setting, it will give you a gate or trigger signal depending on the switch. There is also a CV input, which offsets your V Ref and can create interesting rhythms.Features:• Two sub-ocatve generator with selection switch, mix knob for -1 and -2 octaves (/2 and /4)• 5 channel audio mixer for 4 different outputs from the Engine and the sub-octave generator• External input for mixing with other signals• Semi-random gate or trigger output generated by the chaos signal• Audio-optimized chaos output• Separate outputs for sub-octave and main mixDIY-Kit-Type:SMD-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. All SMD parts are pre-soldered, only trough-hole parts to solder. For build guide, more info, videos etc. please check the buttons below.
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The 4VCLFO is four LFOs with triangle outputs in 10 HP. It features a knob for the frequency of each LFO and CV inputs with attenuators. The „Aux“ input is normalized to the four CV inputs, so you can modulate all LFOs with one signal at the same time. Plugging a cable into the CV input breaks its connection from the aux input. This way you can create more interesting Modulations for your Patches.Features:• 4 independent Triangle wave LFOs• CV input with attenuator for each LFO• „Aux“ input normalized to the CV inputs• Eye-catching display for indication of polarityDIY-Kit-Type:SMD-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. All SMD parts are pre-soldered, only trough-hole parts to solder. For build guide, more info, videos etc. please check the buttons below.
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The CubuSynth VCFA is a multimode VCF with LP,HP and BP modes with integrated VCA, CV control over frequency, resonance and volume. The CV input for the frequency features 1V/Oct scaling over about 2~3 octaves. So you can even create plucky melodies with the resonance in "ringing" mode. The gain control can reach a nice, soft saturation.Features:• 3 simultaneous Outputs for Low Pass, Band Pass and High Pass• Integrated VCA at the input stage• CV control over volume, frequency and resonance• "Ringing" mode on upper resonance setting• 1 V/oct tracking over 2~3 octaves (with freq CV attenuator on 100%)• Saturation on incoming signal (VCA stage) on upper gain settingDIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
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The CubuSynth VCLFO v2 is a Digital Voltage controlled Low frequency oscillator, with 16 Waveforms, Step control (Sample & Hold style), LFO Sync / Reset, CV control over Frequency, Amplitude, Waveform, Frequency multiplier, Skew and Step Rate.It is based on the Electric Druid VCLFO10 chip which was written/designed by Tom Wiltshire aka "Electric Druid".Features:• 16 Waveforms selectable in two Banks of 8• Frequency range: 0.05Hz to 12.8Hz (102.4Hz with multiplier x8)• 6 CV inputs for Multiplier, Frequency, Step Rate, Skew, Waveform and Level• "Sync" Input for LFO reset, or Step Sync• 3 outputs: Uni-Polar (0 to +5V), Bi-Polar inverted (+5V to -5V / 10Vpp) and Bi-Polar normal (-5V to +5V / 10Vpp)DIY-Kit-Type:SMD-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. All SMD parts are pre-soldered, only trough-hole parts to solder. For build guide, more info, videos etc. please check the buttons below.
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Gloop is a Eurorack performance looper designed for layered loop manipulation, granular-style textures and hands-on live control. It records audio into a continuous buffer of up to two minutes and plays it back using four simultaneous playheads, each with independent speed, pitch, direction, volume and loop position.Each playhead can scan a different part of the recorded loop or focus on its own sub-loop, making it easy to create dense textures, shifting drones, rhythmic variations and evolving sound beds from a single recording. Four assignable CV inputs allow external modulation of playhead speed, position or volume, and the built-in delay, reverb and bitcrush effects add further sound-shaping options.The two mono outputs allow each playhead to be routed individually or sent to both outputs, supporting flexible effects routing and stereo movement when used with a panning mixer. Grid mode slices the loop into 4, 8 or 16 quantized regions, keeping playback positions and loop sizes locked to rhythmic divisions for precise beat-based performance.Designed for live use, Gloop includes dedicated physical volume controls for each playhead, plus record and overdub control via the front-panel button or trigger input. Compact, immediate and highly flexible, Gloop turns recorded audio into a playable modular instrument for loop mangling, texture building and experimental sampling.• Eurorack performance looper with four simultaneous playheads.• Up to two minutes of continuous 48kHz / 24-bit audio recording.• Independent speed, pitch, direction, volume and position per playhead.• Sub-loop control for layered textures and granular-style playback.• Four assignable CV inputs for speed, position or volume modulation.• Built-in delay, reverb and bitcrush effects.• Two mono outputs with flexible playhead routing.• Grid mode with 4, 8 or 16 quantized loop regions.• Record and overdub via button or trigger input.DIY-Kit-Type:SMD-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. All SMD parts are pre-soldered, only trough-hole parts to solder. For build guide, more info, videos etc. please check the buttons below.
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The Cali oscillator is a new and improved version of the classic Buchla 258 wave shaping oscillator with an additional pulse width modulated output.The oscillator features the classic Sine to Square and Sine to Saw wave shaping with dedicated CV control.The Cali Oscillator differs from previous versions of the 258 in that it has a 3-way position switch rather than 2-way.This new middle position features a bonus waveform that will shape from a pulse into a kind of triangular trapezoid shape.The shaping control is more unpredictable in this middle position and the switch reacts to body contact when the wave shape is set low – it can bethought of as an extra bonus waveform, great for producing glitchy sounds! There are dedicated inputs for linear and logarithmic FM and the Cali alsoadds a Pulse output with it’s own width control and PWM CV input.The behaviour of the pulse output can be affected by the position of the waveform switch and wave shape control.The module features Coarse and Fine frequency controls and an LFO mode, LFO range is accessed via an LED pushbutton that alsoacts as the LFO speed indicator – the button will light up when the waveform moves through its positive cycle.Because the wave shape modulation is independent of pitch this oscillator is very useful for creating complex timbres whilst retaining musical pitch.Features:• Sine to Saw/Square Waveform Output with CV over wave shaping• Pulse output with voltage controlled PWM• Linear FM with attenuator• Logarithmic FM with attenuator• Bonus ‘trapezoid’ output• Coarse & Fine controls with LFO mode• Includes power supply isolation on frequency controlsDIY-Kit-Type:THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.