New
AI Synthesis - Analog Voltage Controlled Oscillator
available
The AI011 Analog VCO is a robust and stable analog Eurorack VCO. Using the legendary curtis 3340 IC, the Oscillator provides buffered Triangle, Square, and Ramp waveforms, as well as a triangle to sine wave shaper to provide a sine wave output. The Eurorack VCO features both Coarse and Fine tune knobs for easy tuning. Pulse Width Modulation is normalled to the PWM input jack, so PWM is controlled with the PWM knob, and when a jack is inserted, the knob serves as an attenuator. Volt per octave and FM input jacks are present, with an attenuator for FM modulation. The VCO is capable of both hard and soft sync. An expander jack is present at the rear of the module for use with future AI modules.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.
€127.00*
New
AI Synthesis - Harmonic Mixer
available
The AI022 Harmonic CP3 Style Mixer is a discreet mixer using no ICs. As gain increases harmonics and analog warmth are added. As gain increases more, distortion and phasing is added, creating new waveforms from old ones.The AI022 takes inspiration from the legendary Moog Modular CP3 style mixer, but updates it for eurorack and allows for user customization of the circuit. Many Moog Modular users attribute the CP3 mixer module to providing much of the warmth of the Moog Modular sound.An exposed Bias knob allows abuse of the circuit, and allows for faithful replication of incoming audio, or radical analog wave shaping and distortion. It is also possible to use the Bias knob to adjust a +/- 5V signal into a 0/+ or 0/- signal.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.
€64.00*
New
AI Synthesis - Line I/O Interface
available
The AI026 Eurorack Line Interface converts between +/- 2V line signals and +/- 5V Eurorack signals. This allows for the best headroom and highest quality when processing line signals with Eurorack modules, and vice versa.Features:• Stereo i/o• Left inputs are normalled to the right when no jack is inserted to the Right Input.• Volume control for Eurorack to line level signal conversion.• Volume control for line to Eurorack level signal conversion, with the ability to add gain/overdrive for non normalized signals.• Input and output jacksDIY-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.
€99.00*
New
AI Synthesis - Looping ADSR Envelope Generator
available
The AI003 Looping ADSR Envelope Generator is a looping ADSR Envelope Generator. It can be manually triggered via Momentary Push Button, Gated via the Gate Signal, Triggered or re-triggered by a Trigger input, or set into a loop mode via a toggle switch. An LED shows the status of the output.This Looping ADSR Envelope Generator DIY Kit circuit was derived (with permission) from the great and simple circuit (only 2 ICs!) from Nicolas on the Electromusic.com forums. With some help from the great Dave Brown, the circuit was updated to provide additional voltage protection, more uniform looping and gate behavior, more precise LED monitoring, and some nice user experience updates.In Gate or Trigger mode, the envelope can be used as a traditional ADSR envelope generator. In loop mode, the output sends a variable exponential waveshape between Ramp, Triangle, and Sawtooth LFO with control over the attack and decay of the LFO shape.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.
€87.00*
New
AI Synthesis - Matrix Mixer
available
The AI008 Matrix Mixer is an active, four in, three out matrix mixer with a summed output. The AI008 can be used to route any of the inputs to any of the outputs. This allows for the creation of feedback patches and other interesting routing, in addition to powerful "regular" signal routing. Common uses include mixing effects outputs into their inputs in order to create drones (or just good old fashioned feedback), mixing oscillators into their own PWM or FM inputs, modulating voltage controlled LFOs and other modulators into themselves, and other feedback patches. The AI008 Matrix mixes is a powerful way to expand any system!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.
€107.00*
New
AI Synthesis - Mixer
available
The AI002 DIY Mixer Kit is an updated take on a classic utility audio or cv mixer. All three inputs have a level control, with full clockwise allowing full volume prior to the summing mixer. Perfect for adding audio inputs to a filter, or cv inputs to a cv input, and other mixing functions. This kit is ideal for those who know how to solder, but are still starting out in their DIY Synthesis journey.This diy mixer kit will not only familiarize yourself with IC Chips, Capacitors, and Resistors, it will also add a key utility module to your DIY Modular Synthesizer.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.
€52.00*
New
AI Synthesis - Multiple
available
The AI001 Multiple Eurorack Synthesizer Module is a 1x6 or a 2x3 passive multiple in only 2hp! It is critically important to be able to split and distribute your modular's signals to multiple destinations with the AI001 Multiple Eurorack Synthesizer Module. Because the module takes up only 2HP, they can be placed anywhere.The Multiple Eurorack Synthesizer Module can be used as either a 2x3 passive multiple, or a 1x6. The first set of four are linked together, and if nothing is plugged into the 5th jack, then that signal continues to the 6th, 7th, and 8th as well. If a cable is plugged into the 5th jack, then those signals are distributed to the 6th, 7th, and 8th jacks and it functions as a 2x4 multiple.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.
€30.00*
New
AI Synthesis - OTA Voltage Controlled Filter
available
A Loving Tribute to the MS 20 Filter.This OTA Voltage Controlled Filter uses the same filter structure as the venerable Korg MS 20 Filter. The filter is switchable between Lowpass and Hi Pass modes, and features an updated diode gain stage in the resonance section. This circuit was adapted by Sagittronics, who does excellent work.The VCF will overdrive and distort in both the HP and LP modes, and the resonance can self-oscillation. As with the MS 20 Filter, the Low Pass slope is 12dB/octave and the High Pass slope is 6dB/octave. The CV input is an attenuverter, allowing for dynamic control-voltage of the cutoff.All jacks, knobs, and other components are soldered directly to the PCB. There is no wiring, making this kit ideal for those who have built a simple module before, and are looking for a high quality, legendary filter in an easy to build package.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.
€99.00*
New
AI Synthesis - Quad VCA Mixer
available
The AI007 Eurroack Quad VCA Mixer is a compact, high quality, and flexible way to control voltage (audio or CV) in your modular system). Each of the four inputs are DC coupled, allowing the amplitude of CV signals as well as audio rate signals to be voltage controlled. The outputs are also normalled together into a mixer, allowing the AI007 Eurorack Quad VCA Mixer to be used as a voltage controlled mixer. Once a cable is patched into a VCA output that output is removed from the mixer signal, allowing each channel to be used independently, giving users four VCAs in total. A dedicated knob shapes the curve response from Linear to Exponential.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.
€127.00*
New
AI Synthesis - Stereo Matrix Mixer
sold out at the moment
The AI018 Eurorack Stereo Matrix Mixer is a compact 8-in, 8-out matrix mixer. A matrix mixer is used to route audio or cv signals from multiple sources to different destinations. There are sixteen potentiometers, with each potentiometer controlling the amount a given stereo input pair (1-4) will be sent to a given stereo output (A-D).A common usage for the AI018 would be as an effects send, with one or more inputs, and one or more effect inputs and outputs. Using the AI018 Stereo Matrix Mixer in this way, inputs can be sent to multiple effects, and the effects can be sent to each other, and even back into themselves, expanding the depth of the effects.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.
€142.00*
New
AI Synthesis - Stomp Box Adapter
available
The AI006 Eurorack Stomp box Adapter is an updated take on a classic utility circuit that converts the higher signal levels of a modular system to be converted to the lower level signals that most stomp boxes are designed for.The AI006 stomp box adapter solves two problems. From the Synth input to the "FX"out, the signal is reduced by a factor of 20 to match the signal levels expected by most stomp boxes. From the "FX" input to the Output, the signal is increased by a factor of 20. Passive attenuators are present on both the send and return in case the input or output levels are too great.Features:• Level conversion: Takes Eurorack signals to guitar level signals suitable for guitar pedals.• Low noise: Maintains a clean and clear signal path, preserving the integrity of your sound.• Compact design: Fits conveniently into any Eurorack case with only 2HP required.• Easy to use: Requires no calibration or special settings, simply patch your Eurorack signals in and your pedal out.• Expand your sonic palette: Use guitar pedals to add distortion, overdrive, fuzz, delay, reverb, and other effects to your modular sounds.• Process modular sounds in new ways: Explore the creative potential of feedback loops, modulation, and other techniques using guitar pedals.• Create unique and experimental soundscapes: Combine the power of modular synthesis with the diverse range of effects available in the guitar world.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.
€74.00*
New
AI Synthesis - Switching Attenuator
available
The AI010 Eurorack Attenuator is a 2 HP dual passive attenuator with switched jacks that allow the attenuator to also work as a multuple. The top-most input is normalled to the second attenuator knob and the third attenuator input. Control voltage is a wonderful way to add expression to a modular patch, and controlling that control voltage is crucial to being able to dial in that expression.A passive eurorack attenuator is a simple un-powered circuit using only resistive elements (usually a potentiometer) to reduce voltage. Rotating the potentiometer will change the output from 0V to 100% of the input without distorting the shape of the incoming voltage. These are simple and primitive, but effective and important methods of controlling voltage, be it the input to a Filter, or the Linear Frequency Modulation input on an Oscillator.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.
€52.00*
New
AI Synthesis - West Coast Mixer
available
The AI106 West Coast Mixer is a fully discrete mixer design that updates vintage West Coast synthesizer mixer designs into a modern form.The AI106 West Coast Mixer takes inspiration from vintage mixer circuits from 60s and 70s West Coast synthesizers, but updates it for eurorack and allows for user customization of the circuit. True to original circuits, the output is inverted. Audio rate signals will sound about the same, but cv signals will be inverted.Because "West Coast" Synthesis focused more on waveshaping and Complex VCO structures as opposed to Subrtacting frequencies from simple waveforms (East Coast), mixers are an important part of traditional West Coast synthesis techniques.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.
€64.00*
New
AI Synthesis - X Filter
available
The AI024 X Filter brings the clean, classic, creamy filtering of classic 80s synths to Eurorack. It uses the same four pole analog low pass filter topology found in classic synths like the Crumar Spirit, the Digisound-80 Modular System, Elka Synthex, Fairlight CMI II/IIx, LinnDrum, Oberheim,PPG Wave, Sequential Circuits synths, and many more.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.
€87.00*
New
AI Synthesis - Eurorack Tape Echo Interface
available
The AI016 Eurorack Tape Echo Interface is a limited edition module that uses a pre-amp and buffered feedback loops to allow a standard three head tape recorder as an analog tape echo. It also provides op-amp saturation on the input when pushed.The tape recorder must have three heads (erase, record, and play) for it to work as a tape echo. This type of tape recorder will have a button or switch that allows the monitoring of the source audio, or what has just been recorded to the tape. The space between the record and play head creates the delay, and the Tape Interface feeds back into the unit to create repeats.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.
€75.00*
New
Befaco - A*B+C v2
available
This is the 2025 version! A*B+C is the ultimate utility for audio and control voltage. It performs multiplication, addition, and attenuation, providing a simple way to create complex signal interactions and timbres.It is formed by two channels, each of which takes two input signals (A and B), multiplies them (A × B), and then adds a third signal (C) to the result.It is formed by two channels, each of which takes two input signals (A and B), multiplies them (A × B), and then adds a third signal (C) to the result.Features:• DC Coupled• Signal LED Indicators• B and C INs normalled to 5VDIY-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.
€108.00*
New
Befaco - Atte
only 2 left
Quad Attenuator/Inverter, Splitter, and Offset GeneratorScale your audio or CV sources and route them to various destinations with this versatile utility. It consists of four identical unity gain amplifiers. Each amplifier can multiply an incoming signal by values ranging from 0 to 1 (for attenuation) or from 0 to -1 (for inverting attenuation). The input of each channel is normalled to the input of the next channel, allowing for easy signal routing from one input to the subsequent ones.The first channel is normalled to 10V, enabling the module to function as an offset generator when no input is connected.Features:• Inversion switch per channel.• Precise zero at the left side of the pots.• Four level LEDs indicate output level and polarity.• Cascaded input topologyDIY-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.
€62.00*
New
Befaco - Mixer v2
available
Utilitarian audio and CV mixerCombine up to four audio and or CV sources into one output, with independent manual level control. It can be used as a four-channel mixer or as two separate two-channel mixers, depending on the connection. If a cable is connected to the Master output but not to the 1+2 output, all channels will be summed at the Master output. If both the Master and 1+2 outputs are connected, the Master will output the mix of channels 3 and 4, while the 1+2 output will provide the mix of channels 1 and 2. Each pair of channels has an LED indicator that shows the presence of a signal.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.
€59.00*
New
Befaco - MuDi
available
Clock Multiple, Conditioner, and Divider in a compact 2 HP formatDistribute your clocks throughout your system using minimal rack space.The first three outputs maintain the same frequency as the input, while outputs 4 to 7 provide time divisions of 1/2, 1/4, 1/8, and 1/16.The active topology allows you to patch clocks on the fly, avoiding the tempo interruptions that can occur with passive multiples.To reduce the footprint, the input is a TRS jack, with the clock signal on the tip and the reset on the ring. For standard clock only operation, use a regular mono cable, or use the provided splitter to access the reset function.Features:• IN Accept pulses greater than 2V.• Scale all clocks to 10V.• Accept audio rate square waves for suboctave generation.• 7 Outs: 3 conditioned copys + 4 quadratic divisions.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.
€62.00*
New
Befaco - Slew
available
Voltage-controlled lag processor and slope detectorTransforms stepped notes into smooth acid slides with independent speeds for both upper and lower notes.The onboard slope detector generates gates while the output is rising or falling, allowing events to be activated when moving to upper or lower voltages.Additionally, it can convert a gate signal into an Attack-Sustain-Release (ASR) envelope.The shape control feature helps balance speed versus input range, enabling quicker speed while sliding to further notes allowing for time compensated portamento.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.
€69.00*