Modulation & Random lfot / touch control lfo / 3 HP ⇣ Low Frequency Oscillator featuring an extensive frequency range and a tactile touch control capability. 1/3 key features LFO with 3 Waveforms Sine, Square and Pulse waves LFO FREQUENCY potentiometer LFO RANGE switch Adjustable Pulse width Two touch plates to play the LFO HOLD function PUSH function Wrong polarity protection Skiff friendly specs & downloads width: 3 HP depth: 28 mm power: 49 mA @ +12V / 47 mA @ -12V documentation videos description / manual The LFO provides three voltages in shape of Sine, Square and Pulse waves. It can be used as a control voltage, clock source or patched into the audio path for drum synthesis. The frequency and the frequency range can be controlled by turning the frequency knob and rate switch. Additionally the width of the pulse wave may be manually adjusted. An LED indicates the current speed of the LFO. On the bottom of the panel you will find two touch plates. Using these you can “play” the LFO and become a part of the circuit. By pressing your finger onto the HOLD plate you will be able to stop and reset the LFO cycle. It will start over again when the finger is released. The second touch plate PUSH is altering the frequency of the oscillator. Roll your finger from the top side of the plate to the bottom and the rate will be increasingly speeded up. Or directly press you finger an all plate parts and go crazy! After releasing your finger from the PUSH plate the frequency will smoothly recover to its original speed set by the frequency knob. prev Up next

Modulation & Random cion / cv function generator / 6 HP ⇣ CION embodies versatility, functioning as a CV AD or ASD envelope, basic filter, slew limiter, and even a voltage-controlled oscillator with variable waveshapes. 1/3 key features Attack & Decay Envelope Attack & Decay CV (also both simultaneously) Shape Control CV Processing via Input Socket Trigger Input Cycle Functionality with CV Control EOC Output LEDs indicate Activity on all Outputs Wrong Polarity Protection Skiff friendly specs & downloads width: 6 HP depth: 28 mm power: 45 mA @ +12V / 31 mA @ -12V documentation videos description / manual The function generator offers an ATTACK and a DECAY potentiometer, which represent the attack and decay times, the positive or negative slew time or the rising and falling edges of an oscillation, depending on the application. There is a CV input for ATTACK and DECAY. The rise and fall times are individually voltage controllable, but they can also be controlled together via the AD input. A shape knob lets you change the CV curve from exponential to logarithmic. The time range per cycle can be as fast as 3ms and last for up to 20 minutes depending on the position of the RANGE switch. The TRIG socket is used to start the envelope via CV. This can also be done by the press of a push-button. Connect any signal (CV or audio). to be processed to the INPUT jack. Insert a gate signal to add a sustain stage to the AD envelope. If no external signal is available to trigger the envelope, the function generator can be set to loop mode by the CYCLE switch. When the switch is active, the envelope starts again from the beginning as soon as it reaches the end of a cycle. The CYCLE CV input activates or deactivates the cycle functionality depending on the switch position. An End-Of-Cycle signal is available at the EOC socket. CION QUICK START GUIDE: CION_QUICK_START .pdf Download PDF • 574KB prev Up next

The HUM PROTECTOR HP200 is probably the most compact stereo hum eliminator on the market. It reliably protects your audio signal from any noise and hum. hum protector hp200 / hum and noise eliminator / 0 HP ⇣ The HUM PROTECTOR HP200 is probably the most compact stereo hum eliminator on the market. It reliably protects your audio signal from any noise and hum. key features 1x Stereo or 2x Mono Compact Design No Power Required Easy to Solder documents "Finally I have no more USB noise in my setup!" "I have never had such a compact and good noise eliminator." videos description / manual Offering either two mono channels or one stereo channel, the device comes in two variants. The initial version incorporates a more economical and compact SMD audio transformer, whereas the alternative version integrates larger through-hole audio transformer with marginally superior specifications. Despite this distinction, both iterations are recognized for their commendable audio quality, exhibiting no discernible differences. From a technical standpoint, audio transformers serve to electrically isolate connected devices, effectively eliminating noise and hum in the audio signal path. The HP200 functions as a desktop unit, eliminating the need for valuable HP (horizontal pitch) in a Eurorack case. Its versatility extends to modular setups, as well as compatibility with grooveboxes, samplers, and other synthesizers, particularly those powered via USB. To eliminate hum or noise when connecting your synth to a mixer for example, just insert the HUM PROTECTOR between the devices by connecting the synth output to the HUM PROTECTOR input and the HUM PROTECTOR output to the mixer input. This should resolve the issue. You can also utilize it to eliminate noise from an audio interface by connecting it to the interface output and the monitor's input. Will there be a full size jack plug version? Probably not, as the product is designed for Eurorack and USB-controlled devices that typically use 3.5 mm jack plugs. In addition, there are already numerous versions with full-size jack sockets. Up

Mixer & VCA μ sum / moog cp3 based 3-channel analog mixer with eq & mute switches / 8 HP ⇣ μSUM is the successor of KNEAD and has an improved circuitry and PCB layout. It was inspired by the famous MOOG CP3-Type Mixer. The circuit adds some nice harmonic distortion to the signal with heavy clipping, if the inputs are turned to the maximum. As the mix is bussed passively turning one input up may result in a reduction of the other inputs. Therefore the output cannot exceed any other input´s level providing auto-leveling on high volumes. 1/3 key features CP3 Transistor-Based Analog Mixer 3 Audio Channels 3x EQ 3x Mute Switch 3x Signal LEDs MIX Volume Skiff friendly Wrong polarity protection specs & downloads width: 8 HP depth: 30 mm power: 56 mA @ +12V / 45 mA @ -12V documentation videos description / manual There are three potentiometers to adjust the LEVEL for each signal. Additionally you may change the frequencies of each channel by turning the EQ knobs. EQ will boost high frequencies turning the knob clockwise and boost low frequencies turning it counter-clockwise. On top you will find MUTE switches for easy sound comparison or live mixing. LEDs will indicate if a signal is passed through. The LED´s brightness can be set with trim potentiometers for each channel. The MIX VOL knob controls the volume of the summed signal being supplied at the OUT Jack. Knead Expander has been omitted on the μSUM Mixer. prev Up next

Filter & EQ rocinante´s gate / simulated low-pass gate with lfo and envelope generator / 10 HP ⇣ Rocinante´s Gate is not a classical low-pass gate (LPG) using vactrols, but goes way beyond that providing an adjustable envelope to control the "gate" through an analog filter. Sending a gate or trigger signal into the GATE INPUT will create these envelope shaped sounds you know from other LPGs. 1/3 key features Low-Pass-Gate based on an Analog Filter Internal Envelope Generator Adjustable Rise, Decay, Length, Fall Stages Internal LFO Gate Level CV Loop Mode Re-Trigger Mode Use the Envelope and LFO with External Modules Skiff Friendly Wrong Polarity Protection specs & downloads width: 10 HP depth: 28 mm power: 54 mA @ +12V / 26 mA @ -12V documentation videos description / manual The LOWPASS knob adjusts the range of frequencies being affected by the gate. If you turn it fully counter clockwise the whole frequency spectrum will be gated. Turning it clockwise will slowly add low frequencies to the gated singal until the whole spectrum is not affected anymore. ENV AMT sets the amount of how much the internal envelope affects the low-pass gate. RISE sets the time how long it will take the sound to go from silent to the loudest level. Just like the time it takes an LED inside of a vactrol to start lighting to its full potential. DECAY controls how long it takes to go from an initial peak to the "gate-phase" level. The length of this phase is varied by the LENGTH potentiometer. Finally FALL changes the time your sound will need to return to silence after the "gate-phase". Just like the time it takes an LED inside of a vactrol to shut down. RESONANCE sets the amount of filtered audio being fed back into the filter input. It can´t go into self-oscillation, but is able to create very crunchy and juicy overtones when turning clockwise. The internal Trigger Generator is being controlled with TRIG RATE and the RE-TRIG/LOOP SWITCH. Adjust the rate of the trigger and apply the singal to either a re-trigger circuitry that repeats the "gate-phase" as long as a gate signal is being applied or to a loop functionality that will create cycles of gates without an external gate or trigger. The ENV/INV SWITCH enables you to alternatively route an inverted envelope to the low-pass filter. This way you may create "ducking" or "side-chained" sounds. An internal triangle LFO can be routed via the LVL ATT attenuator to vary the amount of envelope that is being passed to the gate. The LFO will be deactivated if you turn the LVL ATT attenuator fully counter-clockwise or if you use an external signal to control the envelope amount by patching a CV signal into LVL CV. In addition to the Audio IN and OUT jacks you may take the signals of the internal envelope and LFO from the ENV OUT and LFO OUT to control external devices. In combination with the loop function Rocinante´s Gate is not only a Low-Pass-Gate, but also an LFO and ADSR Generator. prev Up next

Filter & EQ stereo eq / 3-band stereo EQ / 6 HP ⇣ Stereo EQ is a classic 3-Band EQ with Frequency Range Control over the Mid Band. 1/3 key features Stereo EQ 3-Bands Input Volume Control Mid Band Frequency Control Wrong Polarity Protection Skiff friendly Perfect Addition to your STEREO SUM Mixer specs & downloads width: 6 HP depth: 28 mm power: 15 mA @ +12V / 11 mA @ -12V documentation videos description / manual The HIGH band can boost or reduce the signal by +/-8db at around 5khz to 20khz. The MID band has a dedicated MID FREQ control that sets the frequency to be changed. It has a pretty narrow range that increases or decreases the signal by +/-5db from 500hz up until 2.2khz depending on the MID FREQ knob setting. The LOW band may change frequencies from 20hz to 300hz by +/-10db. The signal volume can be set with the INPUT potentiometer. STEREO EQ has a similar design as the STEREO SUM CHANNEL modules. If you want to have a more detailed EQ control over your mix STEREO EQ is a perfect addition to your STEREO SUM Mixer. prev Up next

Sequencer serial / shift register sequencer / 8 HP ⇣ Serial is a sequencer that generates random gates and voltages, allowing for seamless looping with a specified step length. It excels at quickly creating and cycling through random voltages while simultaneously producing up to 8 gates. 1/3 key features 8-Step Analog Sequencer Outputs 8 Gates and 1 CV Signal Sequence Randomly or Looped 4 Different Lengths Length CV External Clock Manually Add or Delete Notes/Gates CV Out Level Control Wrong Polarity Protection specs & downloads width: 8 HP depth: 30 mm power: 55 mA @ +12V / 21 mA @ -12V documentation videos description / manual The CLOCK input takes any voltage (CV & audio) and generates clock pulses according to a voltage threshold that can be adjusted by a trimmer on the back of the board. Turn it to the left to lower the threshold and increase the probability that low voltages will generate a clock signal. This clock is used to drive an internal shift register that reads a voltage level generated by an internal noise generator and synchronises it to the clock. The generated noise can also be taken from the NOISE output. If you plug something into the CV IN socket, this voltage is mixed with the noise source and locked to the sequence with every clock pulse. This way you can influence random notes with an external CV. When voltages are locked to a clock, a gate corresponding to that clock signal is generated and passed in series to the GATE OUTPUTS. In addition, a main trigger pulse is available at the PULSE socket. At the same time, the locked voltage is passed on to the CV OUT socket (e.g. to be routed to a 1V/OCT input of an oscillator). Adjust the level of this voltage with the AMOUNT knob. Use the ADD or DEL button to manually set or remove locked voltages in the sequence. You will notice that you can only add a note if you press ADD at the same time as a clock pulse. By pressing the LENGTH button, you can choose the step length of the sequence between 4, 6, 7 or 8 steps (the picture shows step 5, which was later changed to step 7). You can also change the length via CV. Please note that changing the step length can also lead to different output voltages at CV OUT, as it reads the voltages from different clock pulses. Use the RNDM/LOOP button to loop a sequence or create a random new series of voltages and gates. SERIAL QUICK START GUIDE: SERIAL_QUICK_START .pdf Download PDF • 532KB prev Up next

Utilities & PSU sl / fader, attenuator, offset, mixer, voltage source, polarizer / 3 HP ⇣ SL is a chainable modular fader that consolidates numerous functions within a 3HP module. Link multiple SL modules effortlessly using a jumper on the rear. 1/3 key features Attenuate Audio Sources or CVs Add offsets to CVs or change their polarity Attenuate/Invert CVs sent to modules that don´t have attenuverters Control Parameters of other Modules Build a Multi-Channel Mixer by Daisy-Chaining Simple Connection of several SL Modules with Jumpers Alter Module Orientation with Flip-Panel Wrong polarity protection specs & downloads width: 3 HP depth: 28 mm power: 15 mA @ +12V / 15 mA @ -12V documentation videos description / manual SL is a Bi- or Uni-Polar Attenuator and Voltage Source with a Sl ide Potentiometer. Each SL can also be a mixer channel when several SL s are daisy-chained. Any audio or voltage source may be attenuated using the sl ide potentiometer. You can change the behaviour from uni-polar to bi-polar via switch. If there is no input patched SL acts as a manual voltage source. Voltages can be set to +5V or +10V via switch. This mode also allows you to change the behaviour from uni-polar to bi-polar. Two or more SL modules may be daisy-chained with simple 2.54mm jumpers on the back. This way you can use them as mixer channels or offset generators.When SL 1’s output is left unconnected, the signal on SL 2’s output is the sum of SL 1 and 2. When output 1 and 2 are left unconnected, the signal on SL 3’s output is the sum of channels 1, 2 and 3 and so on.Leave SL 1’s input and output unconnected. Patch a CV source to SL 2’s input. SL 2’s output will be an offset copy of the input signal. Use SL 1’s sl ider to adjust the offset and use SL 2’s sl ider to adjust the amplitude and polarity of the CV. If you patch an input in SL 1´s input and take the output from SL 2, the signal will first be attenuated and then offset. You can choose to have the jacks on top or bottom of the module by flipping the panel and changing the sl ide pot´s orientation via two jumpers on the back. prev Up next

Utilities & PSU switched / switched mute multiple / 4 HP ⇣ When those arrows point the way, the two "Combine" switches unite three channels from one side of the multiple with the other side in a flash. Just make sure the single channel switches on the receiving side are looking the other way across the panel. Catching on? 1/3 key features 2x4 passive Multiple 1x8 passive Multiple 2x In or Out jacks 8 switches to route signals One multiple side can be assigned to the other at once 3U Eurorack module, 4 HP wide specs & downloads width: 4 HP depth: 28 mm power: No power consumption documentation videos description / manual SWITCHED is a 4HP passive 2x3 switched multiple module for Eurorack. Both sides can be combined to have a 1 to 7 multiple, each numeric channel may be muted or switched to the other multiple side. The two "Combine" switches indicated by an arrow connect three channels of one multiple side to the other side at once, if the single channel switches of the receiving multiple side are pointing to the opposite edge of the panel. prev Up next

Effects inaki / dual delay / 10 HP ⇣ Iñaki is a Dual Delay, Stereo Delay, CV Pan, CV Crossfade, 2 Channel Mixer and a Mono to Stereo Converter in a single module. 1/3 key features Dual/Stereo PT2399 Delay CV Pan CV Crossfade CV Attenuator 2 Channel Mixer Mono to Stereo Converter Delay Time and Feedback Wrong Polarity Protection specs & downloads width: 10 HP depth: 44 mm power: 65 mA @ +12V / 55 mA @ -12V documentation videos description / manual Each of the two channels has a PT2399 Delay with Time and Feedback. There is also an individual EQ available. The volume of the channels is adjustable with the two VOL potentiometers. The output of each channel is supplied on the L and R output jacks. These can be used for stereo signals. You may use CV Pan to change the volume of each side. Turning the CV Attenuator you sets the amount of PAN applied to both channels. Additionally there is a MIX out, where both sides are available at a single output jack. Using the Pan knob or the CV IN you can pan between both sides. If there is only one audio source connected to IN L this signal is multiplied to the other channel in order to provide a crossfade functionality. prev Up next

ST CASE is a Eurorack enclosure that you can 3D-print yourself. It is 42HP wide and can be used with M3 threaded strips that are inserted from the side. There is a cable holder on the back and the large holes on the bottom allow easy access to cables and boards for recalibration. st case / 3d-printable eurorack case / 42 HP ⇣ ST CASE is a Eurorack enclosure that you can 3D-print yourself. It is 42HP wide and can be used with M3 threaded strips that are inserted from the side. There is a cable holder on the back and the large holes on the bottom allow easy access to cables and boards for recalibration. You will need an M3 10mm screw to fixate the cable holder and four rubber feet for a non-slip stand. If you don't dare to mount your new DIY module directly into your Eurorack case, the ST Case is the ideal companion for testing newly built modules. Two Variants TYPE-A comes with a small power supply unit that users can solder themselves, and TYPE-B allows for the mounting of power supply modules from other manufacturers on the back. Inside the TYPE- A case there is space for a small USB-C power supply that delivers 150mA@-12V, 250mA@+12V and +5V (mA depends on the USB voltage used). It offers four ribbon power cable connectors. The PSU board can be purchased and soldered separately. TYPE-B has the same specifications as Type-A, but offers the option of mounting a third-party 4HP power supply module on the back of the case instead of a PSU PCB inside. This allows you to use your preferred 4HP power supply module with more power than the Type-A case PSU offers. key features 3D-Printable Low-Cost Slide-in Rail Brackets Lightweight specs & downloads Width: 42 HP Depth: 55 mm Power: PCB or 4HP Module TYPE-A (USB DIY PSU) Type-A DIY PSU TYPE-B (4HP PWR Module) Print your own! To have your ST CASE 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 30€ to 50€ (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 6€. The cases shown on this page were printed with PLA on a Bambu Lab X1C. DOWNLOAD STL (ZIP) Up

Mixer & VCA cuerly / 3-channel stereo mixer with cue / 6 HP ⇣ Cuerly is a compact 3-channel stereo mixer with cue functionality, allowing you to pre-listen to signals before sending them to the main mix. It’s the perfect mixer for live performances in a small Eurorack setup. 1/4 key features 3 Stereo-Channels Level Control per Channel Cue Buttons for Pre-Listening Heaphone Output Headphone Level Control Mix to Headphone Control Max. Gain +20dB Wrong polarity protection specs & downloads width: 6 HP depth: 40 mm power: 43 mA @ +12V / 35 mA @ -12V documentation videos description / manual Cuerly features three stereo channels, each with independent level control. You can connect a stereo signal to any of the three inputs: IN1, IN2, or IN3. The level of each channel is adjusted using the corresponding VOL1, VOL2, and VOL3 knobs. Mono signals can also be processed by patching a cable into the left input, which will automatically normalize the signal to the right channel. The final mix is sent to stereo headphones via the TRS PHONES output. You can control the headphone volume using the VOL HP potentiometer. To preview a signal, simply press the corresponding cue button. The cued signal is removed from the main mix and routed exclusively to the headphone output. The VOL1, VOL2, and VOL3 knobs continue to function as level controls, even when the signal is cued through the headphones. The LEDs serve as level indicators for the cued signal only. For direct comparison, turn the MIX TO HP knob to the right. This routes the main mix to the headphones along with the cued signal, allowing you to compose and patch new sounds while still monitoring the main output - without needing to remove your headphones. You can cue any combination of the three channels. If all three cue buttons are active, no audio will be sent to the main output, and the signal will be routed only to the headphones. Additionally, the cue buttons can function as mute controls for the main mix. Cuerly offers a maximum gain of +20dB, with independent gain adjustment for each of the six inputs. Gain levels can be fine-tuned using the trimmer potentiometers located on the back of the module. Cuerly is designed specifically for live performances, where sounds are improvised and created on the fly. Its compact size makes it the ideal addition to your small performance case. CUERLY QUICK START GUIDE: CUERLY_QUICK_START_GUIDE .pdf Download PDF • 1.82MB prev Up next