Mixer & VCA svca / stereo vca with stereo audio thru / 6 HP ⇣ SVCA is a High Performance Stereo Voltage Controlled Amplifier with plenty of gain to boost signals. It is great to split your stereo signal for further audio processing and simultaniously change the amplification via CV to create complex harmonics from a single stereo source. 1/3 key features Stereo Voltage Controlled Amplifier Offset Control CV Attenuator Original signal is routed to THRU out L & R (buffered) Wrong polarity protection Skiff friendly specs & downloads width: 6 HP depth: 30 mm power: 50 mA @ +12V / 22 mA @ -12V documentation videos description / manual When you connect an audio source to the L IN and R IN jacks, it will be immediately sent to the THRU jacks, allowing you to apply further stereo processing to your original signal. Simultaneously, the signal is directed to the Stereo VCA. Within this section, you have the ability to manually adjust or modulate the audio's volume using the CV jack. Rotating the CV Potentiometer will reduce the strength of the incoming CV signal. By using the Offset Potentiometer, you can establish the point at which the amplifier begins to influence the signal's level. prev Up next

Utilities & PSU usb / usb frontpanel power supply / 3 HP ⇣ USB allows you to power any other USB powered device from your Eurorack PSU. If you are using an ST Modular WORKBENCH or MIXBENCH this is particularly handy. But also other external devices such as external CV Sequencers and Controllers, USB lamps or even mobile phones can be powered from this module. 1/3 key features USB Power 3x USB Type A Sockets On/Off Switch Third Socket Registered for Charging Mobile Devices No +5V Rail Needed Wrong polarity protection specs & downloads width: 3 HP depth: 30 mm power: 8 mA @ +12V / 0 mA @ -12V (LED only, total consumption depending on powered devices) documentation videos description / manual USB has three USB Type A sockets and an on/off switch. You don´t need a +5V power rail on your PSU. „ USB “ internally converts +12V to +5V. The third socket is also registered for charging mobile devices. It supplies +2V on the D− and D+ lines of the USB socket showing the device that it may charge a maximum of 500mA (this is an Apple standard, though charging of other brands worked well, too). As USB directly draws current from your PSU, make sure you have enough „current headroom“ available. Don´t use this module to power devices that draw more than an absolute maximum of 800mA in total, it is recommended to keep it below 500mA. prev Up next

Oscillator eurokastle / eurorack version of the bastl kastle / 10 HP ⇣ This is a Eurorack adaptation of the renowned Bastl Instruments Kastle – a digital synthesis playground. Embodying the full spectrum of Kastle 1.5 functionality, this version features subtle modifications to seamlessly integrate into the Eurorack format. KASTLE_BACK.jpg 1/3 key features Please check out the Bastl Desktop Synths for further details and consider buying one - it´s worth it! Use with Bastl Kastle or Drum Kastle Firmware Illuminated EuroKastle Logo Wrong Polarity Protection specs & downloads width: 10 HP depth: 28 mm power: 47 mA @ +12V documentation videos description / manual Switching between OSC mode and Rungler mode has been streamlined with a convenient switch, eliminating the need for intricate cable patching. Furthermore, each functionality is consolidated to a single input/output, simplifying your setup. Notably, our EuroKastle boasts a unique Waveshape CV attenuator absent in the original Kastle design. While we highly recommend Bastl's desktop version, the EuroKastle can stand independently. You can independently source all the required components, without necessarily needing the original. It's important to note that the PCB lacks an AVR ISP header. To program the Attiny85 ICs, a prior flashing process is essential before they find their place in the IC sockets (a breadboard can be utilized for this purpose). The programming process can be completed using any AVR ISP programmer. Powering the EuroKastle is a breeze with compatibility with standard Eurorack power supply units. Version V2 introduces AVR Headers to the PCB's bottom for direct ATTiny programming on the PCB itself. The diode pads have been thoughtfully enlarged for an enhanced soldering experience. Additionally, the CV Sources are normalized to the CV Input switches, facilitating instant modulation without the need for external patching. In Version V3, we've incorporated a jumper that allows you to transform the Mix OR OUT socket into a TRIGGER INPUT for the Drum Kastle firmware, enhancing your creative possibilities. For those seeking additional technical details and resources, we encourage you to explore the following links: Bastl Schematics Bastl Instruments Official Website prev Up next

ST CASE SMALL is a 20HP 3D printable Eurorack case designed to hold a small power supply (e.g. POW!) and an effects module to build a modular-compatible effects unit the size of a guitar pedal. Of course, you can also mount any other type of module that suits your needs. The internal depth of the cabinet is 35mm, the rails are inserted from the side. It is recommended to glue small rubber feet underneath to ensure a good stand. st case small / 3d-printable eurorack case / 20 HP ⇣ ST CASE SMALL is a 20HP 3D printable Eurorack case designed to hold a small power supply (e.g. POW!) and an effects module to build a modular-compatible effects unit the size of a guitar pedal. Of course, you can also mount any other type of module that suits your needs. The internal depth of the cabinet is 35mm, the rails are inserted from the side. It is recommended to glue small rubber feet underneath to ensure a good stand. There is a large hole at the bottom for easy access to the power cables and calibration trimmers or bridges. This makes this enclosure ideal for testing purposes. To have your ST CASE SMALL printed, you can download the STL-file below and contact your preferred 3D printing service. It is best to use PLA or PETG filaments. The average cost of printing the enclosure at an online print shop is around 15€ to 30€ (PLA; black; no finish). Local 3D printing services are often cheaper than those you find online. If you print the enclosure yourself on your own printer, it costs about 3€. The case shown on this page was printed with PLA on a Bambu Lab X1C. key features 3D-Printable Low-Cost Slide-in Rail Brackets Lightweight specs & downloads width: 20 HP depth: 55 mm power: no psu DOWNLOAD STL (ZIP) Up

1U Module ap / cv gate swap & switch / 14 HP ⇣ AP can be used to switch signals on and off or sw ap them between two destinations. 1/3 key features Swap & Switch CV Gate activates Switch Manual Switch LED Indication Available in Intellijel Format Skiff friendly specs & downloads width: 14 HP depth: 30 mm power: 19 mA @ +12V / 14 mA @ -12V documentation videos description / manual When a gate signal is ap plied to the GATE input IN B is connected to OUT A and IN A is connected to OUT B. When the gate signal is low, IN A goes to OUT A and IN B is connected to OUT B. You can also switch the signal manually using the latching switch in the middle of the module. If nothing is connected to IN A, +5V are provided at the active output socket. This way you can use AP as a manual gate or as an alternating gate trigger for two targets. prev Up next

MIDI THRU serves as an operational MIDI multiplier, enabling a 1 to 5 connection, utilizing 3.5mm TRS jacks. In contemporary times, numerous devices incorporate TRS jacks for their MIDI connectivity. To establish connections with standard MIDI cables, you would require 3.5mm stereo audio jack plugs to MIDI DIN 5-pin adapters. Additionally, the majority of MIDI tools are exclusively designed with traditional MIDI DIN jacks. This is where the functionality of MIDI THRU becomes evident. midi thru / active 1x5 trs midi thru / 0 HP ⇣ MIDI THRU serves as an operational MIDI multiplier, enabling a 1 to 5 connection, utilizing 3.5mm TRS jacks. In contemporary times, numerous devices incorporate TRS jacks for their MIDI connectivity. To establish connections with standard MIDI cables, you would require 3.5mm stereo audio jack plugs to MIDI DIN 5-pin adapters. Additionally, the majority of MIDI tools are exclusively designed with traditional MIDI DIN jacks. This is where the functionality of MIDI THRU becomes evident, allowing direct connections between your TRS MIDI devices without necessitating adapter cables. key features USB MIDI THRU 1 Input, 5 Outputs A or B-Type TRS Input LED Indication Plug & Play USB Powered Optional TRS-Switch for the Outputs 0HP Desktop-Tool documents Optional TRS-Switch (Type A ↔ Type B): description / manual There is one MIDI input which is switchable from TRS MIDI Type A (this is the new standard used by KORG, Make Noise, AKAI and IK Multimedia) to TRS MIDI type B (this is the old alternative standard used by Arturia, Novation or 1010Music) by means of a push button. The input signal is actively multiplied to 5 TRS-Type A outputs. An LED indicates if a MIDI signal is being processed. MIDI THRU is powered via USB-C. Since it is an active device, it can only be used in one direction. Therefore, the outputs cannot be used as inputs. If you need a simple TRS-A to TRS-B adapter, please check out the workmate trs switch . Up

Modulation & Random clanches / branches with internal cv clock / 6 HP ⇣ CLANCHES is an 6 HP clock source and dual random gate. It is a modification of Émilie Gillet's module Branches. 1/3 key features Internal Clock Source Dual Random Gate CV Clock HOLD Function Probability CV Clock normalled to both Gates 3x LED Two separate Gate Inputs Probabilty CV Skiff friendly specs & downloads width: 6 HP depth: 28 mm power: 60 mA @ +12V / 35 mA @ -12V documentation videos description / manual The internal clock indicated by the LED located in the centre is normalled to both inputs of the random gate. If there is an external trigger patched to one of the IN jacks, this connection will be interrupted. The gate takes a trigger or gate as an input and routes it to either one of its two outputs A and B according to a random coin toss. You can manually adjust the internal clock rate. A Switch changes the range from slow over moderate to very fast.The CV input gives you the opportunity to use control voltages in order to adjust the clock speed. Any signal above 3V will vary the rate. If the signal drops below 3V the clock generator is forced to hold. This way you can generate very interesting rhythms by just patching a random signal or LFO into the Clock CV. The internal clock is furthermore supplied via the OUT jack. The two manual controls P1 and P2 and their corresponding CV inputs change the probability of a signal to be routed to one of its outputs. In extreme settings, the outcome is no longer random causing the module to behave like a voltage controlled switch. The two LEDs on top indicate which output of each channel has been selected to route the signal. In contrast to the original Branches module the two toggle switches simple change the behaviour if the P1 or P2 is set fully clock- or fully counter clockwise. If you hold the button for 2 seconds once the signal will be routed to A and B alternately with each incoming trigger. In normal mode the will just be routed to A (CW) or B (CCW). prev Up next

Mixer & VCA phoebe / 4-channel afl mixer with aux send / 18 HP ⇣ PHOEBE stands out as a highly interactive 4-channel mixer that seamlessly integrates into any Eurorack configuration, offering a tactile experience that complements diverse setups. 1/3 key features 4 Channel Mixer 4 x Mute / Level / Aux Send 2 x Send/Return (per Channel and Selected) AFL (After Fade Listen) via Headphone Out Smooth Transitions with Slider Pots Performance-Orientated Mixing Wrong Polarity Protection specs & downloads width: 18 HP depth: 30 mm power: 70 mA @ +12V / 50 mA @ -12V documentation videos description / manual PHOEBE has four channels. Each channel has a MUTE switch, a LEVEL control and a SEND knob in order to use external effects. Underneath these controls there is the MIX/AFL Fader which determines if the signal should be routed to the MIX or the HEADPHONE output jack. In the top „MIX“ position the channel´s audio is routed to the MIX out. In the bottom „AFL“ position it is routed to the HEADPHONE out. AFL stands for „After Fade Listen“ and enables you to listen to the channels audio before you add it to the MIX output. It is similar to PFL (Pre-Fade Listen), but the signal is taken after the LEVEL settings in order to have a good mix comparison on the headphones. Imagine you are playing a live set and want to take a sound from the mix in order to add a new one from the same VCO later on. Simply pull the fader slowly from MIX to AFL in order to take it smoothly from the MIX out. Then change the sound, edit sequences etc. and listen to the result on the headphones first. Add the mix output signal to the headphones with the little MIX trimmer potentiometer and verify if the new sounds fits the mix. Then just push the fader up into the MIX position and the transition is complete. The upper position of the slider always equals volume that is set with the LEVEL knob. So it´s save to bang it up for breaks and cuts during your performance. You may adjust the headphone volume with the VOLUME trimmer potentiometer. In addition to the SEND and RETURN effect routing per channel there is also a second SEND S and RETURN S routing which lets you send the signal of several selected channels (via jumper on the back) with one knob at once. Both SEND/RETURN ways are active also when the channel is in AFL mode and not being supplied to the mix. This way you can add the effect return of a channel to the mix even if the original sound is currently not playing. All channels have dedicated GAIN trimmer potentiometers on the front. prev Up next

Oscillator hh / analog hi-hat and noise generator / 4 HP ⇣ HH is a very simple, but handy little module that completes any modular drum rack. 1/3 key features Analog Hi-Hat and Noise Generator Internal Decay Envelope Internal VCA CV Control over VCA Offset CV Attenuator Adjustable Noise Colour: Brown, Pink, White Illuminated ST Modular Logo specs & downloads width: 8 HP depth: 28 mm power: 35 mA @ +12V / 25 mA @ -12V documentation videos description / manual HH is an analog Hi-Hat and Noise generator with an internal VCA and decay envelope. The Module can be triggered by a trigger signal at the TRIG Input. Using the DECAY potentiometer you can open and close the Hi-Hat. The ST Modular logo will flash according to the decay envelope. This may also be voltage controlled with any CV signal at the CV input. The voltage changes the internal VCA offset, but does not affect the decay envelope. The incoming voltage can be attenuated using the dedicated attenuator potentiometer. An LED indicates the current state of the voltage. Additionally you may also change the colour of the noise being generated with the COLOUR pot. Fully counter-clockwise the noise will equal Brown Noise with reduced high frequencies. At noon it will sound like Pink Noise, which is a bit louder at the low-frequency end of the spectrum, and softer at the high end. Almost fully clockwise it will be White Noise, broadly spread across the sound spectrum, sounding like a waterfall. Fully clockwise the noise will be boosted on all frequencies to have a more present noise spectrum. prev Up next

CV Bench is a small and handy version of Mutable Instruments´ CV PAL, a USB MIDI to CV Interface. It enables you to control your modular from a computer or a tablet. Simply connect CV Bench with a Micro USB cable to your USB host device and you are ready to send Gates and CV to your modules. No further driver installation is required, you can directly select CV PAL as your midi port in your DAW´s midi settings. cv bench / usb midi to cv interface / 0 HP ⇣ CV Bench is a small and handy version of Mutable Instruments´ CV PAL, a USB MIDI to CV Interface. It enables you to control your modular from a computer or a tablet. Simply connect CV Bench with a Micro USB cable to your USB host device and you are ready to send Gates and CV to your modules. No further driver installation is required, you can directly select CV PAL as your midi port in your DAW´s midi settings. Unlike to the original, this version has shrunk to a tiny desktop tool that can sit directly in front of your modular. You don´t have to give up any of your precious HP. It also features two GATE LEDs that indicate when a gate signal is present at the gate jacks. CV BENCH is powered by the USB cable. key features USB MIDI to CV Interface 2 Channels Over 10 Midi Modes Gate LED Indication documents Plug & Play USB Powered 0HP Desktop-Tool description / manual The interface has two channels that can be used in various different ways depending on the MIDI channel applied. The most popular modes are: Channel 1: Monophonic mode OUT 1: Note CV OUT 2: Velocity CV GATE 1: Gate GATE 2: Gate Channel 3 / Channel 4: Dual monophonic mode OUT 1: Note CV for channel 3 OUT 2: Note CV for channel 4 GATE 1: Gate for channel 3 GATE 2: Gate for channel 4 Channel 5: Duophonic mode OUT 1: Note CV output 1 OUT 2: Note CV output 2 GATE 1: Gate GATE 2: Gate Channel 10: Drums OUT 1: BD (note 36) trigger OUT 2: SD (note 38) trigger GATE 1: SD2 (note 40) trigger GATE 2: CHH (note 46) trigger CV BENCH works with the same firmware as the original CV PAL. Since it uses an unusual USB setting, you may experience message delays on systems running Windows. Please see the video below where I used CV BENCH to control my modular from Ableton on a Windows 10 computer and decide yourself if you feel any jitter or delays. Released under cc-by-sa-3.0 licence. You may refer to the original CV PAL manual for further information. Resources: https://github.com/pichenettes/cvpal https://mutable-instruments.net/archive/cvpal/manual/ Up

Effects 3xeq / triple tilt eq / 4 HP ⇣ 3xEQ presents a row of three "One Knob" Tilt EQs, accompanied by an extra Mix Output. This module offers a streamlined solution for shaping waveforms, enriching basslines, refining hats and noises, and harmonizing elements within your mix. 1/3 key features 3x Tilt EQ Change Low and High Frequencies with just one Knob Mix Output Input Normalization for parallel EQíng Wrong Polarity Protection specs & downloads width: 4 HP depth: 28 mm power: 26 mA @ +12V / 24 mA @ -12V documentation videos description / manual Each EQ will boost high frequencies and cut low frequencies when turning the pots clockwise and vice-versa when turning them counter-clockwise. Each input can be processed individually, but you may also take the sum of 2 or all three eq´d inputs from the Mix Output. The first Input is normalised to the other two inputs. Thus its possible to use all three EQs on one signal in parallel. prev Up next

Effects singer / feature-rich delay with extensive parameters / 8 HP ⇣ Probably SINGER is one of the best equipped DIY PT2399 Delays available. It is the consequence of years of development of other delay effects such as DELAY V2 and GRITZNER and now combines new and old functions in one module. Why another PT2399 Delay? Well, because the PT2399 is a very special kind of delay with its own and very unique character we all love and we want CV control over most parameters. In contrast to DELAY V2 and GRITZNER, SINGER was made to explore the boundaries of the PT2399 chip and is able to create all sorts of crazy delay, glitch and noise sounds. It is rather specialized on short delay times, but can create some really nice delay and feedback craziness. 1/4 key features Analog Delay CV Control over most Parameters Two Inputs Internal LFO WET Output Wrong polarity protection specs & downloads width: 8 HP depth: 45 mm power: 95 mA @ +12V / 45 mA @ -12V documentation videos description / manual SINGER has two audio inputs IN A and IN B, whereas IN B includes a high pass filter that attenuates frequencies below 320Hz. Especially for effect sends it is helpful to only introduce a high pass filtered delay effect to the mix. You can switch between IN A and IN B by using the A/B switch (switch MAN / LFO set to MAN) or by introducing a CV gate signal to the A/B GATE input jack. When the CV gate signal is high, only IN B will be routed to the delay circuitry indicated by the IN B LED. It is also possible to switch between both inputs using the internal LFO (switch MAN / LFO set to LFO). This way you can create some really unique delay cascades using two different audio signals. The DELAY TIME can be changed with the large DLY TME knob. The range is set to be too large for the PT2399 chip to handle. Consequently turning the knob from 2 o´clock on clockwise will create crazy glitches and noise artifacts. Cleaner delay times can be achieved by settings from 7 to 12 o´clock. The delay time can be changed via CV at the TIME CV input jack. A dedicated DLY CV attenuator let´s you decrease the amount of CV that is being applied. Additionally an internal LFO can control delay time if nothing is patched into the TIME CV jack and the DLY CV knob is turned to the right. The LFO rate can be set with the LFO RATE potentiometer and the LFO cycle can be reset by a CV gate or trigger signal that is patched to the LFO RESET input jack. You may choose to use a triangle or square wave LFO with the help of the TRI/SQU switch. The LFO is normalized to delay rate and feedback via the dedicated attenuators if nothing is patched to the corresponding CV input jacks. The LFO rate LED only indicates LFO waves controlling delay rates after attenuation. The LFO is also normalized to the A/B input switch if the MAN / LFO switch is set to LFO. A DRY/WET potentiometer sets the amount of delay effect that is applied to the OUT jack. On top the level of the wet signal can be changed with the IN attenuator. Hence if the DRY/WET pot is fully clockwise and the IN attenuator is fully counter-clockwise, no signal is audible at the OUT jack. FEEDBACK may be changed with the help of the FEEDBACK knob and can also be controlled via CV at the FDBK CV jack and the dedicated FDBK CV attenuator. If nothing is patched to the FDBK CV jack you can also route the internal LFO to control the feedback amount if you turn the FDBK CV attenuator to the right. VCA CV provides the opportunity to control the level of amplification of the wet signal via control voltages such as an envelope or an LFO. The WET output supplies the pure delay signal at any time. SINGER QUICK START GUIDE: SINGER_QUICK_START .pdf Download PDF • 741KB prev Up next