DIY Kits
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As someone who is developing Eurorack modules, I always found it tedious to visualize signals coming from the modular synth on my oscilloscope. The reason for this is that there’s really no convenient adapters for this (well, as far as I know at least). Most workarounds to this problem suffer from two problems: a) They’re usually mechanically unstable, and b) most of the times I would need to redistribute the visualized signal to somewhere else, which requires extra cables and a mult. To alleviate these issues I’ve created the the THREETOM Wiretap, a 2-way mult that you can directly mount onto a BNC connector.This is a fully assembled Wiretap adapter, no assembly required, just plug and play!
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The 3394 Voice is a compact and flexible analog synth voice that packs a full signal chain into one module.VCO, VCF, VCA, envelopes, and noise. Based on the classic 3394 chip, it delivers rich analog tone with selectable square, saw, and triangle waveforms, routed through a juicy 24dB low-pass filter capable of self-resonance and pitch tracking. Two built-in envelopes shape both filter and amplitude, with switchable AD/AR modes for dynamic control. When unpatched, it acts as a constant VCO output, and the mix trimmer allows tonal variation by blending in a square sub, noise, or external signal. Ideal for melodic lines or snappy percussive sounds like kicks, snares, and zaps, the 3394 Voice is both a complete voice and a set of standalone building blocks for your Eurorack system.Features:• VCO with Triangle/Square/Saw waves• Lowpass resonant 24db filter• Square sub oscillator• Analog noise source• Built in VCA and 2 envelopes• Can also be used as separate Filter/VCO/VCA/Noise sourceDIY-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 Automator is a hands-on, 2-channel tempo-synced CV and gate recorder for Eurorack, built around a large, expressive slider and intuitive controls. It captures your movements in real time, turning gestures into looping modulation patterns with precise timing. Requiring an external clock (4ppqn), Automator continuously records while idle and begins playback the moment you hit record, looping up to 4 bars. You can change loop length and tempo post-recording, and each channel—selectable via a button—is color-coded (red for channel 1, green for channel 2). CV is recorded via the slider, while gates are captured using a dedicated button, with high resolution and flexible timing. Whether you're drawing dynamic modulations or tight rhythmic triggers, Automator gives you a powerful and performative way to animate your patches.Features:• Dual-channel CV and Gate recorder with tempo sync• Dedicated Gate button for rhythmic trigger input• Supports loop lengths from ¼ bar to 4 bars• Channel selection button with color indication (Red = Ch1, Green = Ch2)• Real-time recording resolution (CV every 2ms, gates down to 50ms)• High gate density (up to 125 triggers per bar)• Recordings timestamped for accurate playback timing• Decoupled gate and CV recording for flexible pattern creation• Clock input (4 ppqn) with tempo scaling from 30 BPM upwards• Playback length can be changed after recording without losing dataDIY-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 FMP is an 8 HP Eurorack FM synthesizer module built around the classic Yamaha YM2413 chip, known for its distinctive sound in vintage game consoles like the MSX, Atari, and Sega systems. Capable of producing everything from clean tones, deep kicks, and noisy snares to bell-like textures and even polyphonic chords, the FMP offers two modes: Tone mode provides a 2-operator FM voice with self-modulating feedback, while Drum mode exposes the chip’s built-in percussion sounds with adjustable levels and pitch. Seven parameters shape the sound and CV interpolation between two parameter sets enables evolving, expressive patterns. While inherently lo-fi, the FMP embraces this character to deliver dynamic, gritty textures, with settings that can be saved for consistent recall. Its charm lies in the unpredictability, offering a rich playground.Features:• 8 HP FM synth voice based on Yamaha YM2413 chip• Two modes: Tone (2-operator FM synth) & Drum (built-in percussion sounds)• Wide sonic range: kicks, snares, hats, bells, chords, and more• Seven tweakable FM parameters• Save and recall settings on power-up• Characterful lo-fi sound with modulator feedback• Adjustable pitch and mix levels in Drum mode• Inspired by classic game console sound chips (MSX, Sega, Atari)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 SDSV+ is a Eurorack drum voice inspired by SyntherJack’s SDSV project and the iconic Simmons SDS5/SDSV drum machine. This enhanced version goes beyond the original by offering expanded sound-shaping capabilities and increased CV control, making it ideal for crafting everything from classic toms, snares, and kicks to hi-hat, crash, and FM-style metallic sounds. If you want to create vintage punch or experimental textures, the SDSV+ delivers dynamic percussion with modular flexibility.Features:• Envelope selection for the VCO and separate Decay pots• Option to use unfiltered noise for click (and the option to turn click off altogether)• Redesigned one of the envelopes to make it independent of input trigger length.• More CV inputs• Noise level controlDIY-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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Ar Merc’het Brao combines a pair of resonant −12 dB filters with two overdrive stages in a compact module; its Breton name translates as "The pretty girls." Configurable for stereo or dual-mono operation and crafted with guitarists in mind, each filter features a switchable mode (Low-Pass or High-Pass) and dedicated CV inputs for voltage control of the cutoff. Global cutoff and resonance controls shape both channels together while the overdrives add harmonic grit and saturation, yielding a versatile tone-shaping device that sits comfortably between modular synthesis and guitar-style processing.Features:• 2 X Resonant 12 dB slope Filter (High Pass/Low Pass)• 2 X Classic Overdrives• Filter Cutoff CV inputs• Global controls for Cutoff and Resonance• Stereo and double mono use• Modular and Guitar friendlyDIY-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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Distresañ is a musical Baxandall shelving EQ engineered for smooth, natural tonal shaping. Its bass and treble shelving controls let you gently boost or cut low and high bands, while a fixed mid control at 1 kHz lets you add or remove body without resorting to narrow, surgical boosts.Designed for broad tonal balance rather than corrective notching, Distresañ imparts hi-fi–style clarity and warmth with minimal artifacts, making it ideal for shaping sounds in mixing, mastering, and live reinforcement where a transparent, musical response is required.Features:• Baxandall shelving topology for smooth, musical bass and treble shaping.• Fixed 1 kHz mid control for adding or removing presence and body.• Designed for tonal balance and overall sound sculpting, not narrow corrective EQ.• Hi-fi–style response: natural-sounding adjustments with minimal artifacts or distortion.• Suitable for mixing, mastering, live sound, and general tone shaping.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 Eread Doubl was designed to split four stereo inputs, each into two mono CV channels. The first splitter yields channels 1 and 5, the second 2 and 6, the third 3 and 7, and the fourth 4 and 8, providing eight mono outputs from the four stereo jacks.The module also functions as a stereo-maker: two mono inputs can be combined into a stereo output via the module’s stereo jack.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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Heklev is an analog echo and reverb module driven by classic MN3007 bucket-brigade devices, capable of lush echoes, dense reverbs and chorus/flanger-style modulation. A built-in VCA and CV inputs for delay rate and VCA make it a flexible performance and studio tool: three front-panel pots control delay time, feedback and dry/wet mix, while CV lets you add rhythmic or evolving motion to the echoes.The module provides three outputs (dry, wet/mix and VCA output) and several trim potentiometers for fine tuning: input/output levels, BBD bias, noise cancellation and the usable range of the delay time knob.Features:• Analog MN3007 BBD-based echo with chorus and flanger capability• Built-in VCA with CV control for dynamic level shaping• Front-panel controls for delay time, feedback, and dry/wet mix• CV input for delay-rate modulation• Three outputs: dry, mix (wet), and VCA output• Five onboard trim pots for input/output level, BBD bias, noise cancellation, and delay-range adjustment• Warm, vintage-style tonal character reminiscent of classic tape and BBD units• Compact 14 HP red anodised aluminium panel for robust, rack-friendly installationDIY-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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Possible applications of the Jedoniañ include using a Hz/V synth as a CV keyboard for your Eurorack or vice versa – converting voltages from a 1V/oct MIDI/CV interface to the Hz/V scale and so on. The upper section converts from 1V/octave to Hz/V and V-Trig to S-Trig. The lower unit converts from Hz/V to 1V/octave and S-Trig to V-Trig.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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TouellSkouarn’s Kala Goanv is an inductor-based Eurorack filter that delivers an vintage tone somewhere between a phaser-like band-pass, a gnarly wah-wah and crunchy distortion. Simple in layout but rich in behavior, the Kala Goanv responds musically to hands-on tweaks. A dedicated cutoff CV input with an attenuator lets you add dynamic modulation, though the module’s frequency response is highly parametric — change one control and the whole character reshapes.Because Kala Goanv uses inductors, the circuit can pick up hum and stray electromagnetic fields; keep the module away from power transformers and noisy electronics for the cleanest results. The module is a compact, characterful filter that brings organic, wired-in vintage texture to modular patches.Features:• Inductor-based filter topology for a distinctive phaser/wa-wah/distortion character.• Large main cutoff knob with tactile vintage control.• Input and output level controls for level matching.• Highly parameter-dependent frequency behaviour – very responsive to knob adjustments.• Sensitive to hum and electromagnetic fields – avoid close proximity to power transformers.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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Skorn da Bask is a expert for creating Drones. Its composed 3 analog Oszillator and a low pass filter. The VCOs can not only be used to generate audio signals, but for modulating the VCF’s cutoff frequency as well.Features:• 3 analog OSCillators/LFOs• 1 analog Low Pass Filter (24dB)• Osc 1, 2, 3 CV Modulation input• Filter Audio Input• Filter Modulation inputDIY-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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Sonveskan is a three-channel mixer built from discrete components and germanium transistors, engineered to deliver gritty, analogue warmth and aggressive harmonic colour. Each channel features two serial gain stages (a front-panel drive control plus a PCB trim), voltage-controllable feedback with a dedicated feedback pot and CV input, a mute switch and a direct output. The main channel adds a two-band equaliser and an additional gain stage with its own trim for extra edge and saturation.Patching multiple strips together encourages wild feedback, multi-stage distortion and experimental textures, making Sonveskañ a compact but powerful tool.Features:• Three identical channel strips with dual serial gain stages.• Voltage-controlled feedback per channel with CV input and feedback intensity control.• Mute switches and direct outputs on each channel for flexible routing.• Main channel two-band EQ plus extra gain stage for added grit.• 2017 model fitted with larger coupling capacitors for improved bass response.• Built around germanium transistors and discrete circuitry for vintage, lo-fi character.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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Strakal Brulu is a great sounding Germanium Fuzz Module. Very characteristic for the module’s sound if the feedback that is coupled to the feedback. The more fuzz, the more feedback. The Strakal Brulu 2 can get pretty nasty and it screams a lot at high fuzz settings and low input level. The fuzz amount can be voltage controlled, with an inverse attenuator.Features:• 2 NOS Germanium Transistors• Cv controled by vactrol• Classic Fuzz sound for mudular levels• Feedback screamingDIY-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 two fuzzes share the same controls. The Fuzzes and EQ are slightly differents (great for strereo). You can output the Stereo signal by plugin a stereo cable or you can output a mono signal : Fuzz1 - clock wise or Fuzz2 - counterclock wise, or a mix of the 2 fuzzes by turning the morphing pot.Features:• Selected Silicon transistors• Mono input• Stereo output - with stereo cable• Mono morphing output - with mono cable• Feedback (with cv control)• EQ (low high)• Morphing (with cv control) Clock wise Fuzz1, counter clock wise Fuzz2• Input Volume• Gain• Stupid Breton nameDIY-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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Stereo tube headphone amplifier featuring a balanced 6.35 mm jack output. The right input is normalized to the left, enabling monitoring of mono sources without extra routing, while the low-impedance balanced output preserves transient detail and channel separation for headphones.Carefully engineered with high-quality parts in France, the circuit pairs high-performance OPA2134 audio op-amps with NOS OTK Ukrainian tubes. It accepts small-signal tubes such as 6j1P, 5654, 6AK5 and EF95, offering a warm, analogue character with robust build quality and audiophile-grade components.Features:• 12V and 5v compatible (selectable heaters voltage via jumpers)• Tube sound• Compatible with 6j1P, 5654, 6AK5, EF95 tubesDIY-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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Strakal Orsel is a tube distortion module that injects organic, vintage character into a modular setup. True to Touell Skouarn tradition, control labels use Breton terminology, while input and output are marked with arrows for clarity.The unit’s topology offers flexible tonal shaping: the Triodenn selector changes the left tube between pentode and triode operation, altering the core sound. The Boukl Retroaktiñ control combines a feedback engage switch with a level pot that ranges from subtle thickening to full, screaming self-oscillation. Gounid sets the balance between the first and second stages. Ampled governs the amount of saturation. A dedicated CV input, Enkas Modulañ, lets external control influence feedback and overall level even when feedback is not engaged.Beyond straightforward distortion, the circuitry produces rich secondary behaviors. With feedback pushed wide the circuit behaves as a powerful effect oscillator whose pitch responds to CV (not calibrated to strict 1 V/oct tracking). With feedback off and conservative level settings, the unit exposes its tube noise floor and can operate as a raw, characterful VCA.Features:• Tube distortion module• Exposes tube noise floor for characterful texture• Can function as a crude VCA• Compatible with 6j1P, 5654, 6AK5 and EF95 tubes• Boutique construction, made in Plougastel-DaoulasDIY-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 1F is a voltage controlled switch, intended to be ‘one friend’ for your sequencer. Its design has been specially focused on working with sequences, by giving them some randomness, applying transpositions or constant variation over time. For this, 0.1% tolerance resistors have been used to achieve exact unitary gains for precision summing of the v/oct signals.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 2M is a dual three channel mixer in 6 HP with volume controls over all the inputs as well as the final output. As its design has been specially focused on audio applications, the input potentiometers are audio-taper type while the output ones are linear. Low distortion / high quality audio operational amplifiers have been selected in order to achieve clean audio mixing, but is also DC-coupled, so it can perform CV signal mixing as well. Great for a small system, allowing for submixes or even stereo mixing.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 4R is a quad random voltage generator in 2HP. It generates two different random stepped voltages per input, each time a rising edge is sensed at TRIG1 or TRIG2. The inputs are independent so they can work at different clock speeds. As TRIG2 is normalled to TRIG1 it is also possible to get 4 random values with just one trigger. The voltage range of each pair of outputs can be set as unipolar (0V to +5V) or bipolar (-5V to +5V).DIY-Kit-Type:SMD-Kit-2. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. It includes SMD and through-hole parts! For build guide, more info, videos etc. please check the buttons below.