feed v2 / voltage controlled aux send with eq / 4 HP ⇣ Feed V2 is an integrated VCA and EQ unit designed to function as a voltage-controlled aux send module. The latest iteration, V2, features enhancements in its Tone response and has undergone a reduction in horizontal pitch from 8HP to 4HP for increased space efficiency. 1/3 key features Voltag Controlled Amplifier Volume Control CV Attenuator Built in EQ Original signal is routed to THRU out Wrong polarity protection Skiff friendly ​ specs & downloads width: 4 HP depth: 25 mm power: 30 mA @ +12V / 12 mA @ -12V documentation videos description / manual If you insert an audio source into the jacks IN it will be directly routed to the THRU jack where you may use you original signal for further processing. The signal is also directly routed to the VCA. Here you can control the volume or amplitude of the audio either manually or via control voltage using the CV jack. Additionally you may change the frequencies of the signal using the TONE potentiometer. Turning counterclockwise will add low and cut high frequencies und turning the knob clockwise will cut low and boost high frequencies. This works well with drums that will be send to an delay, reverb or any other effect when control voltage is being send to the CV jack. prev Up next

werner / mutable instruments "ripples" filter adaption / 10 HP ⇣ Actually its a Franz´d Ripples, if you like. Just like Franz, Werner is a filter with an internal mixer and LFO. It is not as buttery as Franz, but still one of the best filters around. 1/3 key features Analog Filter 3 Filter Outputs: Low Pass 2-Pole, Low-Pass 4-Pole, Band Pass 2-Pole VCA for Low-Pass 4-Pole Internal LFO with three Waveforms: Triangle, Inverted Triangle & Square LFO Reset, LED indicating LFO rate, LFO normalized to Filter Circuit Apply three LFO waveforms at the same time Attenuator for each LFO Wave or external CV 3-Channel MOOG CP3 transistor based Mixer Volume control for each Mixer Channel Wrong Polarity Protection specs & downloads width: 10 HP depth: 38 mm power: 55 mA @ +12V / 55 mA @ -12V documentation videos description / manual Actually its a Franz´d Ripples, if you like. Just like Franz, Werner is a filter with an internal mixer and LFO. It is not as buttery as Franz, but still one of the best filters around. It has all the functionality of the original Ripples module, but also provides a 3-channel MOOG CP3 transistor based mixer and an LFO with Triangle, Square and inverted Triangle outs, that are normalized to CUTOFF and Q. These connections are interrupted as soon as external CV is plugged into the corresponding CV inputs. The small trimmer potentiometers CV/FREQ and CV/FM will attenuate the amount of the LFO voltage affecting the filter frequency. CV/FM is a bipolar attenuverter (positive and negative). CV/Q will set the amount of CV affecting the resonance. If you want to switch off the LFO, set CV/FM to mid position (12 o´clock) and CV/FREQ and CV/Q fully counter clockwise. Connections: LFO Triangle Wave --> CV/FREQ, LFO Square Wave --> CV/FM, LFO Inverted Triangle Wave --> CV/Q ​ There is also an LFO RESET input in order to restart the LFO cycle. This way you can synchronize the CUTOFF movements to a rhythmical pattern. ​ Released under cc-by-sa-3.0 license: Pichenettes Mutable Instruments prev Up next

tryfelo / 8hp triple re-settable lfo with clock divider / 8 HP ⇣ Introducing a Triple Re-Settable LFO with Clock Divider – a powerhouse of precision and versatility. With three synchronized LFOs at your command, you're not just shaping sound, you're sculpting time itself. Perfectly in sync, precisely re-settable, and elegantly compact, this module elevates your modular experience to a new level of control and creativity. 1/3 key features Three Square and Triangle Wave LFOs Individual LFO Rates CV Attenuator per LFO Reset all LFOs in connection to single Trigger/Clock Clockdivider per LFO Selectable Clockdivision Rates per LFO Variation creates alternative Rythmical Reset-Patterns Skiff friendly Wrong polarity protection ​ specs & downloads width: 8 HP depth: 30 mm power: 45 mA @ +12V / 32 mA @ -12V documentation videos description / manual Tryfelo has three LFOs that can be reset by a single clock/trigger signal. Each LFO produces either a triangle or a square wave selectable via switch. In the mid position of the switch the LFO is deactivated. You may change the LFO´s rate with the help of a dedicated potentiometer. There are also CV attenuators per LFO available. Three bipolar LEDs are indicating the current state of the voltages. The LFO rate available increases from LFO 1 to LFO 3. LFO 1 will produce fast oscillating waves, whereas LFO 3 will provide very slowly changing control voltages. LFO speeds may be changed individually by choosing different capacitor values during assembly. Each LFO is internally connected to a clock divider that will reset the LFO cycle in connection to an incoming trigger/clock and even holds the LFO value when the clock divider pulse is high. During a hold phase there are still slow voltage movements on low LFO rates to keep a pause interesting. This way you can connect the LFOs to a rhythmical context and create pauses in a very musical way. The clock divider needs a trigger or clock signal at the CLK input, that will be converted into a pulse to create these pauses/holds mentioned above. The length of the pulse depends on the speed of the clock. Slower clocks or clock divisions will create longer pulses. The incoming trigger/clock signal will be divided by 2 or 4 for LFO 1, by 4 or 8 for LFO 2 and by 8 or 16 for LFO 3 selectable via switch. The LFO reset may also be deactivated by setting the dedicated switches to the mid position. Each divided signal may also be taken from the individual clock outputs for further external processing. The RST input will accept any trigger/pulse/clock signal and resets the clock division for all LFOs. VARI accepts any control voltage and produces rhythmical variations of the clock divisions. These variations are not purely random, but will generate alternative trigger patterns in connection to the incoming clock/trigger signal prev Up next

envelope / cv envelope generator / 12 HP ⇣ ENVELOPE presents a classic ADSR/AR envelope generator elevated by advanced controls and shaping capabilities. Tailored for crafting diverse envelopes, it offers precise adjustments that result in dynamic control voltages, adding an organic and captivating dimension to your sounds. 1/3 key features ADSR/AR Envelope CV Control over all Stages Attenuator per CV Input Shape Control for Attack, Decay and Release Internal Envelope-Controlled Amplifier Loop Function Internal Modulation 0V to +10V Range ​ specs & downloads width: 12 HP depth: 30 mm power: 56 mA @ +12V / 36 mA @ -12V documentation videos description / manual The length of each ADSR stage can be changed with four slider potentiometers. Times range from 1ms in FAST MODE to half a minute in SLOW MODE. The FAST MODE allows a very fine adjustment of short envelopes, which is especially handy for creating percussive sounds. ​ There are dedicated SHAPE potentiometers for the ATTACK, DECAY and RELEASE stages. With these you can switch from exponential to logarithmic response curves. ​ Each phase has its own CV input to control its timing. Dedicated attenuators allow you to adjust how much voltage is applied. The slider LEDs indicate if a voltage is being processed and if the timing of a stage is being changed. If nothing is patched to the CV inputs, the attenuators suppress the portion of each stage's voltage that is passed to the OUTPUT jack. This allows you to quickly change the envelope without changing the original slider settings. In addition, there is a CV input RF CV to control all rising and falling stages at once (without LED indication). ​ ENVELOPE also has an internal GATE and MODULATION source. When the LOOP/RESET switch is set to LOOP, the envelope is internally triggered at a rate set by the MOD RATE pot. It also allows you to internally apply a TRIANGLE or SQUARE-WAVE LFO to any stage when nothing is patched to the CV inputs and the attenuators are turned clockwise. The rate of the LFO is also controllable with the MOD RATE pot. You can change the waveform of the LFO with the TRI/SQU switch. Setting the LOOP/RESET switch to RESET will reset the internal LFO each time a gate or trigger is received at the TRIG/GATE input. ​ The TRIG/GATE switch determines whether a trigger or gate signal should be applied to the TRIG/GATE input. When you set the switch to TRIG, the envelope type changes to ATTACK and RELEASE only. If you need an envelope that is easy to change, this is the correct setting. GATE mode activates a full-featured ADSR envelope with many adjustment options. ​ In addition to the standard envelope output ENV OUT, there is also an inverted output ENV INV. The voltage ranges of the ADSR outputs are about 0V to +10V for the normal output and 0V to -10V for the inverted output. ​ To complete the packed feature list, ENVELOPE is also equipped with an internal VCA, which is internally connected to the envelope output. Simply connect an audio source to the VCA IN input and you'll have an envelope-controlled signal available at the VCA OUT jack. ENVELOPE QUICK START GUIDE: ENVELOPE_QUICK_START .pdf Download PDF • 710KB prev Up next

cinco / five oscillators in a module / 14 HP ⇣ CINCO consists of a series of five oscillators that can be controlled in pitch from a single source. It generates drones, chords and massive walls of sound that stand out impressively from classic single-wave oscillators. 1/3 key features Five Analog Oscillators 2x Saw or Pulse and 3x Saw Waves Individual Pitch Controls Single CV Pitch Input Transpose all Oscillators Internal Mixer Individual Outputs Pulse Width Control (OSC 1 & 2) FM Inputs (OSC 3, 4 & 5) Skiff friendly Wrong polarity protection ​ specs & downloads width: 14 HP depth: 30 mm power: 65 mA @ +12V / 43 mA @ -12V documentation videos description / manual Cinco boasts five analog oscillators capable of generating drones or chords comprising five notes, accessible from the MIX OUT socket. Each oscillator's tuning can be adjusted independently using the TUNE and FINE controls. Simultaneous pitch control for all five oscillators is facilitated by patching CV to the CV ALL input. Moreover, the TUNE ALL knob allows for collective transposition of all oscillators, with the range of transpose amount adjustable via a trimmer located on the module's rear. While Cinco wasn't specifically designed for precise 1V per octave tracking, you can achieve close approximation by calibrating tuning using trimmers located on the module's back. The first oscillator is slightly tuned below the rest, while the last oscillator is slightly tuned above. The fixed oscillator tuning can be changed with optional capacitors on the circuit board. Oscillators 1 and 2 offer a choice between a SAW or PULSE waveform, each selectable via dedicated toggle switches. Pulse width adjustment can be done manually using the PLS WIDTH knobs or via CV modulation. In the case of CV modulation, the PWM knob controls the intensity of the modulation. It's important to note that these PWM knobs aren't attenuators; hence, incoming CV cannot be completely deactivated for pulse width control but can be reduced to a pleasant level. Oscillators 3 to 5 exclusively output a saw waveform and include additional frequency modulation inputs (FM IN). Applying voltage to these inputs modulates the frequency (pitch) of the oscillators. The FM AMT controls determine the degree of CV influence on the frequency. Similar to previous controls, the FM AMT knobs aren't attenuators, meaning full left rotation won't completely eliminate FM, but rather reduce it to a minimal level. Notably, the FM IN input of oscillator 3 is normalized to the other FM inputs. This facilitates pitch control for oscillators 3 to 5 alongside the primary CV ALL pitch input. If desired, this normalization can be disabled by desoldering an SMD bridge located on the back of the PCB or by connecting dummy cables (patch cables that are not connected further) to the other FM inputs. Utilize the five LEVEL controls to precisely adjust the volume of each oscillator or completely deactivate them by turning the controls fully counterclockwise. Additionally, each oscillator is individually outputted via the OUT sockets located at the bottom, allowing for further isolated processing of the signals with external modules. Importantly, these individual outputs are not affected by the LEVEL controls and typically produce louder signals compared to the mixed output. Cinco isn't just a source for rich and harmonically versatile analog sounds; it's also capable of generating harsh and earthshaking waveforms, particularly when utilizing the FM inputs. CINCO QUICK START GUIDE: CINCO_QUICK_START .pdf Download PDF • 782KB prev Up next

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

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

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

karl / multi-mode stereo filter / 8 HP ⇣ Karl is an analog multi-mode filter that is loosely based on the KORG MS-10 and MS-20 filters, but has been improved to handle two mono or one stereo audio source. The Resonance can still be varied independently per channel, which is very interesting when using two different audio sources at once. If you want to merge the two audio sources there is a Mix Out next to the two independent outputs per channel. 1/3 key features Analog Dual/Stereo-Filter 4 Filter Modes: LP, HP, Phaser and Overdrive Independent Resonance Control Mix two Mono Signals Mono to Stereo Converter CV Control over Cutoff Frequency CV Attenuator Expander Module Wrong Polarity Protection specs & downloads width: 8 HP depth: 28 mm power: 56 mA @ +12V / 45 mA @ -12V documentation videos description / manual Karl has four modes: ​ Low Pass Mode: Classic Analog Low Pass Filter High Pass Mode: Classic Analog High Pass Filter Phaser Mode: A small band of frequencies is filtered next to the original signal being passed through Overdrive Mode: If Resonance is increased the filter will quickly jump to overdrive, which creates some nice Harmonics ​ The Modes may be changed via jumpers on the back of the module. In any mode the Cutoff Frequency may be changed via CV. The CV signal can be attenuated with the CV potentiometer. There is also an expander module available. The „Karl Mode Selector“ gives you front panel control over the modes and an alternative audio input for the right channel that can be activated via switch. prev Up next

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

A semi-modular analog desktop-synthesizer Featuring a dual complex oscillator characterized by simple and clear operation and uncompromised sound Designed as an instrument that can be built, explored and learned MAIN FEATURES TWO ANALOG OSCILLATORS Two Voltage Controlled Oscillators with classic waveforms, waveshapers, sub-octaves and a noise source. Convenient sliding potentiometers for volume control of the waveforms. Based on the famous CEM3340 chip and a newly developed wave-shaping tone generator. TWO SEQUENCERS Play notes with a 5-STEP trigger and CV sequencer and an additional 4-STEP CV sequencer. Transpose and change the length of a sequence, control the tempo via CV, add swing or sequence manually with the push of a button. OSC MIX & VARI BOARDS Seamlessly blend the oscillators manually or by CV. Insert external audio and pass it through the Filter or internal Reverb. VARI BOARDS are interchangeable boards, each offering a different functionality. Choose the VARI BOARD that meets your requirements. DUAL LPG, VCA & ADSR Each oscillator is processed by a filter-based low-pass gate (LPG) and both are optionally routed through an internal AC-coupled VCA. Use the internal ADSR envelope to shape and express your sounds. MODULATION & TOOLS Get your sounds moving with the internal CV-controllable LFO and the Buchla 281e-inspired function generator. Multiply, invert and amplify your signals with a buffered multiple and an additional DC-coupled VCA. REVERBERATION Add depth to your analog sounds with the internal reverb unit. Connect either an Analog Spring Tank or a Digital Reverb Brick. Apply Reverb Feedback and control the Dry/Wet Portion via CV. DO IT YOURSELF! EUPHORIA is only available as a DIY-project and was designed to be built by passionate builders. It consists of fourteen individual circuit boards that are mounted on one controller board Youtube Playlist AUDIO SPECIFICATIONS PRIMARY OSCILLATOR CEM3440 based VCO 5 Waveforms plus Noise Pulse-width Modulation (PWM) Linear and Exponential FM Waveshape CV Two selectable Suboctaves SECONDARY OSCILLATOR Waveshaping Tone Generator 5 Waveforms plus EQ 2x CV Wavefolders Pulse-width Modulation (PWM) Linear and Exponential FM Two selectable Suboctaves Oscillator Sync SEQUENCER FEATURES Two Synced Sequencers Trigger and CV control Clock divider Tempo CV and Swing Individual Sequence Lengths Reset and Transpose Function PERFORMANCE FEATURES 2x LPG and 2x VCA LFO, ADSR, MULT incl. INVERTER Function Generator OSC CV Mixer External Input Reverb with Dry/Wet CV & Feedback Headphone Output PANEL GALLERY 1/22 16 PCBs in total 1680 Parts to be soldered or mounted 600€ Estimated total costs per DIY build ∞ Hours of EUPHORIA BUILD GUIDE, CALIBRATION, MANUAL & BOM All the information you need to successfully build and play EUPHORIA, such as a user manual and building instructions, can be found in the support section support Up

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