Building these DIY kits happens on your own risk. We can't do support or give a guarantee for correct function, because that depends on your own skills. Be responsible and check the building instructions before you buy. Thank you!


Befaco - Knurlies

Knurlies by Befaco

 

Pack of 50 of the unique screws designed specifically for Eurorack. These M3 screws can be secured by hand, all common screwdrivers and Allen Key. These are great for saving time when rearranging your synth.  Each Knurlie comes with a fitted plastic washer to prevent rack rash.

Befaco - Knurlies

21,60 €

  • 0,1 kg
  • Soon in stock again

Befaco - Muxlicer - DIY Kit

Muxlicer is a sequential signal processor designed to give a huge range of special functions to your modular setup in the minimum amount of space. The module is divided in three main blocks: a Digital Step Controller, a Gate Generator and an Analog Switch (a.k.a. Mux/DeMux).

 

Muxslicer can be used as a CV sequencer, advanced gate sequencer with ratchets/bursts/re-triggers and also a bi-directional 8-way sequential switch, with the ability to route one input to several outputs or several inputs to one output. The module features an internal tap tempo clock, but it can also be clocked externally with division/ multiplication control. There is a reset input, EOC out, and also a clock output with it’s own division/multiplication control. The sequencer can also be CV addressed to move through it’s stages and can also be played in one-shot mode. With one-shot play through and an additional external slew limiter you can create some unique 8 stage envelopes. Muxslicer is designed with high “function to HP ratio” philosophy, giving you many options and maximum flexibility in minimum space.

  • Route any modular signal from one IN up to eight different Outs or viceversa.
  • Generate CV and Gate signals, been able to work as sequential voltage source a.k.a. sequencer.
  • Cut audio signals in rhythmical slices with independent volume.
  • Generate complex and dynamic patterns from any audio or modulation signal.
  • Create powerful Gate sequences with control voltage retriggering for each step.
  • Select easily when your signals act on your patch with the Address function.

Current draw: +12V: 45mA, -12V: 5mA
Width: 16 HP,  depth: 23mm

 

Manual and building instructios can be downloaded here, firmware can be found here from Github.

DIY level: medium.

Befaco - Muxlicer- DIY Kit

140,00 €

  • 0,3 kg
  • Soon in stock again

Befaco - Burst - DIY Kit

Burst is a Pingable Trigger Burst generator with distribution, probability and time division control. It will create multiplications of your triggers, leading to doubles, triplets, quintuplets and true polyrhythms for your modular system. The module allows you to add voltage controlled redrums and dynamic ratcheting effects for your patches. In addition, Burst works like a regular clock source and trigger for other modules via its Tempo and End of Cycle outputs.

  •  Custom trigger bursts up to 64 triggers.
  • Voltage Control burst Quantity with dedicated attenuverter.
  • One Shot and Cycle play modes activated via manual controls or dedicated Trigg input.
  • Pingable clock input.
  • Voltage Control burst Distribution, Time Division and Probability.
  • Tempo and End of Cycle individual outputs for sync other modules.

Current draw: +12V: 56mA, -12V: 10mA
Width: 8 HP,  depth: 30mm

 

Manual and building instructions can be downloaded here.

DIY level: medium.

Befaco - Burst - DIY Kit

119,00 €

  • 0,25 kg
  • Soon in stock again

Befaco - Regulated Power Bus - DIY Kit

Befaco’s regulated power bus features linear regulators for each rail and guarantees up to 1.5A of current without voltage drops and with minimum noise leakage. It comes with faston blades for daisy chaining several busses together for monster cases! Don't try to plug this bus to any different source than a +/-15 volts power supply as it will not work or in the worst case damage the bus. Download the assembly maual here.

  • Eurorack compliant
  • Length 40cm, width 6cm
  • 14 IDC boxed outputs headers
  • Blade connectors for linking multiple buses
  • Regulation stage included
  • Power out (all 1.5A): +12v, -12v & 5v
  • Calibratable regulators for maximum precision at +/- 12 rails

DIY level: easy.

Befaco - Regulated Power Bus - DIY Kit
66,00 €

50,00 €

  • 0,4 kg
  • Limited availability
  • Ships within 3-7 days1

Befaco - Lunch Bus - DIY Kit

Lunchbus is a skiff friendly compact power supply and bus. Specially designed for small systems or lunch boxes, offering a great balance between space, power and stability! It’s 12 mm tall, featuring horizontal connectors to maximize space. Power connector and ON/Off are specially situated to make assembly on the case ultra-easy.

  • Input: 9 – 18v (Recommended 45W)
  • Current: +12v: 625 mA / -12v: 625 mA / +5v: 350 mA

Download the assembly manual here.

DIY level: easy.

Befaco - Lunch Bus - DIY Kit

82,00 €

  • 0,4 kg
  • Limited availability
  • Ships within 3-7 days1

Befaco - Hexmix - DIY Kit

6-channel performance mixer with EQs mutes and Pan

Hexmix System is a six channel performance mixer specially designed for Eurorack. The system has two separate modules, the core of the mixer: Hexmix that has six channels with three band EQ, mute, pan and EQ section on the master, and Hexpander that add three auxiliar sends per channel, PFL, individual outs and balanced output. The mixer has a strong inspiration in classical DJ mixers, providing sharp EQ’s for enhanced performance, auxilliar send for effects and individual outputs to record your performance per channel. The unique Mute Section is a powerful tool for performances, providing a momentary mute function controlled by vactrols and adding a smooth release to the signal decay. The system is designed to be placed in 6U, instead of the traditional 3U paradigm in Eurorack. So we will have every feature for each channel vertically as a convetional tabletop mixing deck.

 

Hexmix Features

This is a six channels mixer with three band EQ, vactrol mutes, pan and volume control per channel. Inputs for every channel are located at left side of Hexmix. Each jack is normalized to a VCA Expander connection in the back, so if you have a Hexmix VCA , you will have the output of each VCA to every input. connecting a jack in any input will disconnect whatever is coming from VCA. The signal passes through various process before being sent to the master section. All of this process are located and controlled at each Channel Strip. The Channel Strip is divided in four basic sections, that will go in the following order: Gain, Mute, EQ and Pan. Master section has it’s own EQ and volume control for the mix of all channels. Master EQ is software than individual channel’s and it’s meant to provide control over the final mix. It’s possible to change output level from line to synth wit ha switch located in the back.

 

Assembly Manual can be downloaded here.

DIY level: advanced.

Befaco - Hexmix - DIY Kit

299,00 €

  • 0,5 kg
  • Soon in stock again

Befaco - Hexpander - DIY Kit

Hexmix expander with 3 aux sends, PFL, individual outs per channel and master balanced out Hexpander adds great functionality to Hexmix module. Featuring Three aux send with auxiliary returns, individual outputs for each channel, complete PFL system and balanced output. Hexpander is designed to be placed on top of Hexmix. Expanding eurorack concept to 6u, allow every channel to be aligned as in traditional tabletop mixers. For every channel you have three auxiliar sends. One pot will measure the amount of signal sent to each of them.  Every auxiliar send has a volume pot, that will measure the level of the signal sent. There are two jacks available so it is possible to send the signal pre or post fader/EQ in parallel. Returns are stereo, having a switch to select if the signal is coming from synth or line level. Like this levels can be set properly, for example, either to a guitar pedal or a FX module at synth level.

 

Hexpander features a complete PFL system, to send channels to the headphones before you add them to main mix. Flip PFL switch to send that channel to the headphones out. With PFL/Master Pot you can do a crossfade between the master signal and every channel sent to PFL. Headphones out will control headphones volume. Level meter will show the level of the sum of all active PFLs. When there is no PFL active, it will show master level.  Every channel has individual 6,5" jacks out at line level. Here you heve the signal of every channel post EQ. As an addition, you have master balanced output.

 

Download the assembly manual here.

DIY level: advanced.

Befaco - Hexpander - DIY Kit

267,00 €

  • 0,5 kg
  • Soon in stock again

Befaco - Hexmix VCA - DIY Kit

Hex mix VCA is a compact six channel VCA with an unique response curve range from logarithmic to linear and to exponential using a pot. All outputs are routed to output six to act as a mixer, with a normalization of each one to remove each VCA from the Mix.

 

Hex mix VCA can act as six independent VCAs as well as a Mixer for all the inputs. Featuring an internal connection to interface with our Hexmix system. Every VCA has a response pot for the incoming CV, being full logarithmic at maximum setup and full exponential at minimum setup, having the linear response in the center position. The pot provides the full range of responses to adequate to our preferred application, such as percussive sounds or panning effects. Level pot of each channel is an attenuator of the signal coming out of each VCA. Jacks are normalized to 10 volts, so when we have no CV present VCA would be fully open and our Level pot will act as a volume.

  • Current needs: +12: 50mA -12: 50mA +5: 0mA
  • Width: 14HP
  • Depth: 30mm

Manual and building instructios can be downloaded here.

DIY level: advanced.

Befaco - Hexmix VCA - DIY Kit

193,00 €

  • 0,4 kg
  • Limited availability
  • Ships within 3-7 days1

Befaco - Rampage (Function Generator)

The Rampage is Befaco’s approach to an old invention: the Serge/Buchla ramp generator. We took the idea of a “patch programmable” function generator/processor, put two units in the same module and tried to expand them with new funky functions and ways to combine them: Slope detectors, analogue logic functions and a few extra outputs to add some more complex features. The module is built around two voltage controlled integrators. Integrators (also known as Lag Processors or Slew limiters) allow you to process your voltages, converting sharp square waves in ramp-like waveforms.

These devices can, for instance, convert a gate signal into a simple envelope, or achieve a “portamento” or “glide” effect when applied to pitch CV. Other well known application of an integrator is it’s ability to low-pass filter an audio signal. Further information and example patches can be found in the user manual or in the videos.

Power consumption: +12V: 110mA -12V: 90mA. Banana or minijack connectors available. Width: 18 HP, depth 30mm. This kit has all the necessary parts to build, including front panel and power cable. Comes with all SMD Parts pre-soldered! Building instructions and manual download here.

DIY level: medium/advanced.

Befaco - Rampage - DIY Kit

179,00 €

  • 0,33 kg
  • Limited availability
  • Ships within 3-7 days1

Befaco - Instrument Interface - DIY Kit

This module is made for interaction between other gear and your Eurorack system. The Instrument Interface is designed to take a wide range of signals and transform them into a set of useful Eurorack compatible voltage levels. The module uses an envelope follower circuit to achieve direct control of the amplitude of any incoming signal, producing a control voltage proportional to its amplitude. This allows a real and direct communication between external sound sources and Eurorack systems.

  • Preamp:  With two audio inputs (6.5mm jack and Mini-jack), amplification of the input signal is controlled by the “GAIN” pot. The minimum signal required to generate the maximum envelope is 200mV peak and allows up to 5v input.
  • BPF: The signal will then pass thru a band pass filter with cut-off frequency and bandwidth control via “FREQ” and “WIDTH” pots. This will set the frequency range of our control signal. After this stage the signal can be accessed at synth level via “AUDIO OUT”.
  • Envelope Follower:  After filtering the signal it will feed into the “RESPONSE” stage which determines the envelope follower’s response velocity. It features a “HIGH”, “MEDIUM” and “LOW” selector switch to achieve the optimal envelope for different kind of signals. “FOLLO OUT” will output the extracted envelope and has a level indicator LED. Green: Medium level; Orange: High level; and Red: Max. Level.
  • Envelope Regenerator: “REGE OUT” is a regenerated envelope that allows independent control of the rise part of the envelope with the “ATTACK” knob, and the fall part with the “DECAY” knob. The Envelope Regenerator also features an LED indicator for the regenerated envelope level. Green: Medium level, Orange: High level, Red: Max. Level.
  • Trigger Extractor: With the “THRESHOLD” pot we can control the level of a comparator that determines when “GATE OUT” and “TRIGG OUT” outputs will be activated.
  • Gate Out:  is active while the envelope is over the threshold we set, while “TRIGG OUT” is activated just when the threshold is passed. Indicator LEDS show when the outputs are active.

Power consumption: +12V: 45mA -12V: 30mA. Width: 11 HP, depth 47mm. Building instructions download here.

DIY level: medium.

Befaco - Instrument Interface - DIY Kit

129,00 €

  • 0,25 kg
  • Limited availability
  • Ships within 3-7 days1

Befaco - Chopping Kinky - DIY Kit

The Chopping Kinky is a voltage controllable dual-channel wavefolder. Each of the module’s two channels has a unique wavefolding profile. At each input there are two CV inputs for controlling the level of waveshaping including one that passes through an attenuverter.

 

A wavefolder converts simple signals into richer and more dynamically changing ones. In contrast to a filter, wavefolding adds harmonic content to the waveform. It works by amplifying the waveform until it begins to saturate, then rather than clipping, the waveform gets folded back in on itself. The CHOPPING KINKY is DC coupled allowing it to be used for both CV and audio duties; to generate harmonics on an audio signal or kinking LFOs and envelopes

 

Power consumption: +12V: 65mA -12V: 55mA. Width: 8 HP, depth 30mm. This kit has all the necessary parts to build, including front panel and power cable. Building instructions download here.

DIY level: medium.

Befaco - Chopping Kinky - DIY Kit

125,00 €

  • 0,19 kg
  • Limited availability
  • Ships within 3-7 days1

Befaco - Sampling Modulator - DIY Kit

The Sampling Modulator is a multi-function module that lies somewhere between a VCO, a Sample & Hold, and an 8 step trigger sequencer. This module can function as:

  • Sequencer Clocked Sample & Hold
  • Analog Down-Sampling Effect
  • Sampling Modulator/Shaper
  • 8 step trigger sequencer
  • Unusual V/oct VCO

You can download the building instructions, manual and see a video via our info page. Instructions include all info you need for a successful building in English. For detailed info about Sampling Modulator check out the Befaco website. Power consumption: +12V: 48mA -12V: 18mA. Width: 8 HP, depth 47mm. This kit has all the necessary parts to build, including front panel and power cable. Download the building instructions here.

DIY level: medium.

Befaco - Sampling Modulator - DIY Kit

119,00 €

  • 0,19 kg
  • Limited availability
  • Ships within 3-7 days1

Befaco - Mixer - DIY Kit

  • Power consumption: +12V: 14mA, -12V: 11mA
  • Width: 8 HP
  • Depth: 50mm (inc power connector)

This kit has all the necessary parts to build, including front panel and power cable. Download building instructions here.

DIY level: easy.

Befaco - Mixer - DIY Kit

59,90 €

  • 0,12 kg
  • Available
  • Ships within 3-7 days1

Befaco - Even VCO - DIY Kit

DIY kit version of the ultrastable even Voltage controlled oscillator (VCO) with great precision, designed to be stable even in the case of power supply fluctuations. Supplied with an octave selector of 10 positions from 32′ to 1/16′ (C0~C9). It’s able to track with a precision of 1 Cent from C0 to C7, 4 Cents in C8 and 13 Cents in C9.

 

Outputs: Triangle, Ramp, PWM, Sine, Even (waveshape with emphasis on even harmonics).

Inputs: Hard sync, V/oct, Lin FM, PWM CV. Power drain: +12V – 36mA, -12V – 26mA. Size: 8HP / 47mm Depth.

 

This kit has all the necessary parts to build, including front panel and power cable. Comes with all SMD Parts pre-soldered! Building instructions can be downloaded here.

DIY level: medium/advanced.

Befaco - Even VCO - DIY Kit

139,00 €

  • 0,19 kg
  • Limited availability
  • Ships within 3-7 days1

Befaco - VC ADSR - DIY Kit

The VC ADSR is our take on the classic ADSR: now smaller, more powerful and user friendly. This compact unit features voltage control for each stage with manual faders to improve usability, feel and aesthetics. A unique feature of the VC ADSR is the gate outputs for each stage of the envelope offering an extra level of control over your patch! Envelope generation can be triggered and controlled with the use of the panel mounted push button or with the trigger/gate input. Control of the response curve between each stage of the envelope (from linear to logarithmic/exponential) is provided by a potentiometer. For in-depth information on the module take a look to our user Manual and Demo Video. Power: +12V: 55mA -12V: 25mA +5V: 0. Width: 8 HP / 30 mm depth.

 

This kit has all the necessary parts to build, including front panel and power cable. Download the building instructions here.

DIY level: medium/advanced.

Befaco - VC ADSR - DIY Kit

119,00 €

  • 0,18 kg
  • Available
  • Ships within 3-7 days1

Befaco - Output Module v3 - DIY Kit

Befaco  Output Module v3 is designed to be the master output for your modular system.

  • The module is capable of stereo or mono operation and converts synth level signals to pro line level (+4dBu).
  • It also features a 3.5mm jack to 6.5mm TRS jack for easy communication with the outside world.
  • Also featured on the module is a headphone amplifier with a 6dB/Oct High-pass filter (fixed on 60Hz) to avoid “pops” and undesired noises when connecting your modular directly to a P.A.
  • A switch is included to send a mono input to a left and right stereo output (particularily useful setting is useful when you connect the synth to a DJ mixer without mono inputs).
  • Last but not least, it features two 6.5mm to 3.5mm jack input converters.

Power: +12V: 24mA -12V: 14mA. Width: 4 HP / 47 mm depth. This kit has all the necessary parts to build, including front panel and power cable. Download the building instructions here.

DIY level: easy.

Befaco - Output - DIY Kit

76,00 €

  • 0,16 kg
  • Soon in stock again

Befaco - A*B+C - DIY Kit

The A*B+C is a dual, four-quadrant multiplier with VC Offset

  • Each section can perform the analog multiplication of two signals (A and B) and add an offset (C). It can also act as a dual voltage controlled attenuverter, dual ring modulator, dual VCA or four channel mixer (see block diagram below).
  • The B inputs are routed to an attenuverter that multiplies the signal between -2 to 2, while the offset inputs (C) route thru a unity gain attenuverter (multiplies the signal between -1 and 1).
  • B and C inputs are normalised to 5v and 10v respectively, so the A inputs can be processed using just the potentiometers.
  • The output of first block is normalized to the second one, so the second output can act as master to get (A1*B1+C1) + (A2*B2+C2).

Power: +12V: 40mA -12V: 40mA. Width: 6 HP / 30 mm depth. This kit has all the necessary parts to build, including front panel and power cable. Download the building instructions here.

DIY level: easy.

Befaco - A*B+C - DIY Kit

100,00 €

  • 0,16 kg
  • Available
  • Ships within 3-7 days1

Befaco - Dual Attenuverter - DIY Kit

Dual Atenuverter is a CV/Audio utility module designed to attenuate, invert and apply offset to an input signal.

The “ATENUVERTER” pot will multiply your signal by 1 when turned clockwise and -1 when turned anti-clockwise.
The “OFFSET” control can add +/- 10V DC to the output. Useful as a manually controlled DC source when no input is connected.
Bicolour LEDs glow red when the output is positive and green when negative meaning this module works well as a CV monitor.

  • Current needs: +12V: 21mA, -12V: 18mA
  • Width: 5 HP
  • Depth: 24 mm (inc power connector)

This kit has all the necessary parts to build, including front panel and power cable. Download the building instructions here.

DIY level: easy.

Befaco - Dual Attenuverter- DIY Kit

59,00 €

  • 0,1 kg
  • Limited availability
  • Ships within 3-7 days1

Befaco - Slew Limiter - DIY Kit

A voltage controlled slew limiter, AKA Lag Processor.

 

A Slew limiter is a device that smoothes an incoming signal, limiting the maximum rate of change of the output voltage over time. It is widely used with pitch CVs to obtain portamento but is also very useful for converting a gate signal into a basic envelope. The module has independent time controls for rising and falling voltages, each with it’s own CV.

  • Current needs: +12V: 10mA, -12V: 10mA
  • Width: 6 HP
  • Depth: 31 mm (inc power connector)

Download the building instructions here.

DIY level: easy.

Befaco - Slew Limiter - DIY Kit

65,00 €

  • 0,12 kg
  • Limited availability
  • Ships within 3-7 days1

Befaco - Crush Delay - DIY Kit

Second version of our Crush delay. An echo-delay unit based on PT2399 that specializes in generating digital garbage and noise! This unit has been improved greatly from first version and signal routing has been changed to improve performance possibilities. Crush Delay v2 has two VCAs that will control the amount of signal that is sent to the delay. First input routed to dry/wet and delay and second one directly to delay. With this second input and Send output we can do external feedback routings (See block diagram). The biggest improvement has been made to the control of PT2399 itself, applying circuit bending techniques. It has an improved and extended speed control, getting a wider range on Crush area as well as a smoother control, converting this unit into a VC digital garbage generator! It includes three gate controlled switches that enables three bends to the chip, providing an even greater variety of digital noise, glitches and nasty mayhem! Of course, crush Delay v2 can be used as an echo-delay unit with around 400 ms clean delay time. and up to 2 seconds of dirty delay. Features VC feedback with an automatic gain control to keep levels stable at any feedback level.

 

Power: +12V: 75mA -12V: 35mA. Width: 11 HP, depth: 47mm. This kit has all the necessary parts to build, including front panel and power cable. Download the building instructions here.

DIY level: medium.

Befaco - Crush Delay - DIY Kit

140,00 €

  • 0,25 kg
  • Limited availability
  • Ships within 3-7 days1

Befaco - BF-22 Sallen Key VCF - DIY Kit

This is a dual Hi/Low pass filter. Inspired by the famous sallen key filter from MS-20 early version. It has attenuverters (inverter-attenuator) as an addition to the normal CV control in Cut-Off and CV control for the resonance with a little more presence of the resonance than the original. The normal CV control for Cut-Off keeps tracking trough 3 octaves. The ‘Link’ switch connects the input of the second into the output of the first to have it in series. Can be powered with +/-12V or +/-15V without changes.

Selectable HP/LP mode 6/12 dB. Cutoff and resonance CV controlled.

Power: +12V: 40mA -12V: 35mA. Width: 17 HP, width: 47mm. This kit has all the necessary parts to build, including front panel and power cable. Download the building instructions here.

DIY level: medium/advanced.

Befaco - BF-22 Sallen Key VCF - DIY Kit

145,00 €

  • 0,24 kg
  • Limited availability
  • Ships within 3-7 days1

Befaco - Jumpskiff (Skiff Case) - DIY Kit

The JumpSkiff is a lightweight and portable 98HP skiff with integrated bus board and powersupply. It is made from lightweight and flexible materials including a PCB base (which doubles as the bus board) and side panels, acrylic end panels and aluminium rails. The integrated power supply outputs 625mA at +/- 12V rails and 1A at the +5V. The bus board offers 14x IDC power connections. This kit has all the necessary parts to build.

DIY level: medium.

Befaco - Jumpskiff (Skiff Case) - DIY Kit
230,00 €

200,00 €

  • 1,6 kg
  • Soon in stock again