Mixer & VCA sum v2 / 6-channel mixer with afl, eq, pan and two aux sends. / 28 HP ⇣ An innovative live mixer designed for the Eurorack modular synth ecosystem, featuring AFL listening capabilities. 1/3 key features 6-Channel Mixer Preview Sounds with AFL VOLUME, EQ, SEND and PAN for channels 1-5 MUTE Switches for Channel 1-5 + 20dB Gain per Channel 1 Stereo Input 2 Selectable Send/Return Ways specs & downloads width: 28 HP depth: 35 mm power: 85 mA @ +12V / 65 mA @ -12V documentation videos description / manual Each of the 5 mono input channels has a LEVEL, PAN, EQ, SEND and AFL potentiometer and may be MUTED with a switch. The mono singal will be converted into a pan-able stereo signal. Additionally the GAIN can be adjusted using the little trim potentiometer. Turning the SEND pot will route the signal to a SEND jack in order to integrate external effects. The wet effect signal may be returned in stereo. You can choose between two SEND ways via switch. The send channels can be set to be active either pre or post AFL per channel via a solder bridge. ‚Pre‘ means you can still hear the send/return way when it is in AFL mode (thus the channels signal is actually not audible in the main mix), ‚post‘ means send/return will only work when the channels signal is routed to the main mix. Each SEND channel has a separate GAIN trimmer adjustable from the front. Channels 1 to 5 have an AFL/MIX potentiometer (AFL = after fade listening), which allows you to audit your sounds on the headphones before you add them to the mix. Fully counter-clockwise the channel is only routed to the headphones (AFL), turning it clockwise it will be smoothly subtracted from the headphone out and added to the main mix (Mix). Two LEDs per channel indicate the current state. The MIX TO HP knob routes the main mix output to the headphone out in order to compare the channels that are in AFL mode with the main mix. This can be deactivated with a switch to only audit channels that are currently not send to the main output. The headphone level can be adjusted with the HP VOLUME knob.The EQ will boost high frequencies and cut low frequencies when turning the pots clockwise and vise versa turning them counterclockwise. Additionally there is a stereo input to integrade other mixers, like PHOEBE, SUM or uSUM for example. This channel has no AFL, EQ or SEND. prev Up next

Meet the Swiss Army knife's ambitious cousin – the multitasking marvel that sits in front of your Eurorack, ready to unscrew musical conundrums, slice through soundscapes, and twea-zor its way into your sonic heart. workbench / usb powered multi utility tool / 0 HP ⇣ Meet the Swiss Army knife's ambitious cousin – the multitasking marvel that sits in front of your Eurorack, ready to unscrew musical conundrums, slice through soundscapes, and twea-zor its way into your sonic heart. key features Multiple LFO Attenuator documents Fader Swap USB-Power description / manual Multiple 1 to 3 multiple with one inverted output. The multiple is normalised to the swap unit of the module. LFO The LFO provides a triangle and square wave and can be reset by an external gate or clock signal. The LFO signal can be attenuated with the slider pot and its rate may be varied with the RATE potentiometer. An inverted copy of the triangle wave is normalised to channel A1. An inverted copy of the square wave is normalised to channel B1. These connections are independent from the LFO attenuator and may be interrupted by patching a cable into the channel A1 or B1 input or by the normalisation selection switches. You can choose to normalise the LFO or a fixed voltage of 0V to +5V adjustable with the VOLTAGE knob for all channels at once. Attenuator/Mixer WORKBENCH has four channels A1, A2 and B1 and B2. Any signal (audio or CV) patched into the inputs are attenuated by the slider pots. The channels of each section are daisy-chained, thus they can be mixed or the second channel can act as an offset (CV). The normalisation switch selects which voltage will be fed into the input if no cable is being patched (LFO or fixed voltage 0V to +5V). Fader The Fader mixes between two sources with a single slider. Both channel sections A and B are mixed into a fader circuit, if no cable is inserted into their outputs and the fader inputs. The fader output can be attenuated with the LVL knob. Swap The Swap unit exchanges the destination of one or two sources with the push of a button. This way you can route two signals to the corresponding destination of the other input. Anything patched into the Mult will also be multiplied to the Swap inputs of nothing is patched here. USB Power WORKBENCH is powered by standard USB power (+5V) and is fully compatible with your Eurorack system. You can choose to power it with a Mini B, Micro B or Type C USB cable. You can solder all USB connect or just one of them, if you have a favourite USB cable you want to use. Up

Filter & EQ 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

Utilities & PSU cv expert / dual polarizer, offset & gain with LFO / 4 HP ⇣ CV EXPERT is a very compact yet powerful CV tool that is equipped with all the important functions you need to customise your control voltages. With its internal LFO, it is immediately ready for use without further patching. 1/3 key features 2x Polarizer 2x Offset 2x Gain Triangle or Square Wave LFO Internal normalizations Low HP format Skiff friendly Wrong polarity protection specs & downloads width: 4 HP depth: 30 mm power: 50 mA @ +12V / 32 mA @ -12V documentation videos description / manual CV Expert (Cve) is a versatile dual-channel tool for customizing control voltages. Its internal LFO is normalised to both inputs and allows you to choose between a triangle or square wave via a jumper on the back. The LFO connection is automatically interrupted when an external CV is inserted. Adjust the LFO rate with the LFO RATE potentiometer. The signal received at the DC-coupled inputs IN ① and IN ② passes through three CV tools: Polarizer The PLRZR potentiometer enables voltage attenuation and inversion. At the midpoint, the signal is eliminated. Turning to the right allows the original voltage to pass through (as with an attenuator). Turning to the left inverts the signal, e.g. positive signals are converted into negative signals. Offset Adds or subtracts voltage from/to the passing signal. OFFSET control determines the offset range. In the center position, there is no voltage offset. Turning the control to the right shifts the voltage to the positive range, while turning it to the left shifts it to the negative range. Gain Amplifies the signal with a maximum gain of 2 at the GAIN control's maximum position, effectively doubling the applied voltage (e.g., +1V becomes +2V, +3V becomes +6V, or +4V becomes +8V). The voltage is capped at a maximum of +/-10V. CV EXPERT QUICK START GUIDE: CVE_QUICK_START .pdf Download PDF • 422KB prev Up next

Utilities & PSU cv pan / stereo panning module / 6 HP ⇣ CV PAN is a traditional CV panning module that is used to distribute a signal manually or automatically to both stereo channels. 1/3 key features Stereo Pan CV Input with Attenuator LED Indication Stereo Input & Output Skiff friendly Wrong polarity protection specs & downloads width: 6 HP depth: 30 mm power: 35 mA @ +12V / 21 mA @ -12V documentation videos description / manual CV PAN is a straightforward CV panning module featuring stereo input and output capabilities. When a stereo signal is connected, you can adjust the PAN knob to distribute the signal evenly to both the L and R outputs when in the center position, or shift emphasis to either the left or right channel by turning the knob accordingly. If a mono signal is used, the left input is automatically routed to the right channel, effectively converting the mono signal into a stereo output. To enable automated pan control, apply CV to the CV input. A complete pan change can be achieved by applying +5V. Adjust the CV input attenuator to the left to reduce the CV level for smaller panning movements. The output sockets deliver the processed stereo signal, ready for routing to other modules. CV PAN QUICK START GUIDE: CV_PAN_QUICK_START .pdf Download PDF • 390KB prev Up next

Oscillator trommelmaschine / three-voice hybrid drum synthesizer / 18 HP ⇣ TROMMELMASCHINE is the German name for "drum machine", and it perfectly sums up the essence of such a machine: a versatile three-voice digital and analog drum module that can be used to create a range of kick drums and various percussion sounds. 1/3 key features 3 Voice Drum Generator Digital & Analog Drum Synth plus Noise Two Digital Drum Modes CV Inputs with Attenuators Internal Mixer Individual Outputs Wrong Polarity Protection Firmware based on MI Peaks: Released under cc-by-sa-3.0 License specs & downloads width: 18 HP depth: 28 mm power: 165 mA @ +12V / 72 mA @ -12V documentation videos description / manual This drum module features a DIGITAL DRUM VOICE (D) with PITCH and TONE control that has three modes (with latest firmware V2): KICK, SNARE and PERC. Press and hold the MODE switch for one second to switch between the KICK and PERC modes. When in KICK mode, press the button briefly to switch to SNARE mode. In KICK mode the sliders are MOD1 = DECAY, MOD2 = TRANSIENT, MOD3 = PITCH ENV and in PERC mode MOD1 = COLOR, MOD2 = DECAY and MOD3 = FM AMT. In SNARE mode the sliders are MOD1 = DECAY, MOD2 = SNAPPYNESS, MOD3 = TONE. PITCH and MOD can be changed manually or via CV with dedicated attenuators. If nothing is connected to the CV inputs, the MOD CV attenuators change the response curve of the MOD sliders. Turn them to the right to get a linear response and to the left to get a logarithmic response. This facilitates precise adjustment of the slider positions. The ANALOG DRUM (A) voice has DECAY, DRIVE and PENV (pitch envelope) sliders, plus PITCH and LENGTH (pitch envelope length) potentiometers. These can also be controlled via CV. The PITCH CV input tracks 1V/OCT and can be used to play notes. The EMPH input lets you emphasize the signal. This jack can be used as an input to control the internal VCA, e.g. to feed it with an ADSR. The third voice is a NOISE GENERATOR (N) with COLOR control and DECAY slider. The decay of the noise can also be controlled via CV. All voices have individual trigger inputs (D. TRIG is normalized to the other trigger inputs) and individual outputs and are also summed using an internal mixer at the MAIN output. The volume of each channel can be changed with the volume pots. Loudness LEDs indicate when a voice is close to clipping. TROMMELMASCHINE QUICK START GUIDE: TROMMELMASCHINE_QUICK_START .pdf Download PDF • 984KB prev Up next

ST Modular has garnered acclaim for its DIY Eurorack Modules, which empower users to assemble personalized modular synthesizers using supplied PCBs and components they acquire themselves. ​ ST Modular has garnered acclaim for its DIY Eurorack Modules, which empower users to assemble personalized modular synthesizers using supplied PCBs and components they acquire themselves. The array of modules available spans oscillators, filters, sequencers, mixers, LFOs, envelope generators, effects., but also desktop synthesizers and tools, each meticulously designed by ST Modular to offer exceptional versatility. These modules cater to an extensive range of sound manipulation and modulation possibilities. The origin of these modules traces back to a personal hobby managed by an individual enthusiast. The expertise in electronics and circuit board construction essential for bringing these projects to life was acquired through a blend of book learning, hands-on breadboarding, and engaging conversations with fellow synthesizer enthusiasts. Until today, ST Modular is operated as a non-profit small business, utilizing all revenues to cover costs for prototyping new modules and synthesizers. ST Modular doesn't directly sell its designs, but instead provides licenses to third parties for manufacturing and distribution. Alongside the sale of PCBs, panels, and DIY kits, certain partners of ST Modular also provide fully assembled modules. Stefan Tretau The S and T before Modular Hey! I am Stefan — a multi-faceted individual acknowledged for my roles as a devoted father, a loving husband, and a passionate musician. My journey in the world of music commenced during the early 2000s, where I found myself captivated by the realm of electronic music. Armed with a selection of electronic instruments, including a TB303, MC307, Micro Modular, and Xbase09, I embarked on a creative exploration that would come to define my artistic identity. In due course, my musical endeavors expanded beyond personal exploration. Live performances became an integral part of my artistic expression, and I successfully transitioned to releasing music on esteemed labels such as Heimatmelodie, Karmarouge, Fortek, Broque, and Night Drive, etching my presence into the electronic music landscape. Sometime around 2010, I took the step of founding my own label, ST RECORDS . The journey began with the vinyl release "Whatever Happened," and to this day, it remains the platform through which I share my music with the world. Yet, my interests transcended performance and production, leading me down the path of curiosity. In 2015, a pivotal juncture in my journey arrived when I grasped the intricate mechanics behind sound generation, particularly concerning Schmitt Triggers and Operational Amplifiers. This understanding marked the genesis of a fresh chapter, propelling me into a phase of self-guided learning encompassing circuit board design, soldering techniques , and culminating in the construction of my first DIY effect pedals. The allure of the "do-it-yourself" ethos grew stronger, prompting me to deepen my knowledge, craft my own schematics, and experiment with prototypes on breadboards. As my passion for modular synthesizers burgeoned, I embarked on a new venture in 2017 — designing my own Eurorack modules, such as "Switched", "Triple Tom", "Cyllene" and "Franz". The positive reception and subsequent demand from the DIY community inspired me to take the next step. Recognizing the enthusiasm for recreating these modules, I made front panels and circuit boards accessible through pushermanproductions.com. This marked the genesis of ST MODULAR , an endeavor driven not by commercial aspirations but by a desire to innovate within the modular synthesis landscape. Unlike the usual practices in the industry, ST Modular is more about pursuing a personal artistic vision for me than fulfilling the wishes and ideas of others. I prioritize uncharted functionalities and distinctive designs, unfettered by market trends. This approach enables me to cater to my own artistic instincts while fostering a sense of community engagement among fellow enthusiasts. ST Modular remains a project driven solely by passion, devoid of profit-oriented objectives . Witnessing individuals create music using modules I've conceived brings me immense satisfaction, encapsulating the essence of artistic camaraderie. The crux of my journey lies in the harmony of music, where notes and circuits converge to create a symphony that resonates beyond temporal confines. Thank you for visiting these pages, Stefa n Up

Modulation & Random good & evil / chained lfo and random voltage generator / 12 HP ⇣ GOOD & EVIL ingeniously captures both order and chaos within a single voltage generator module. Its versatility extends to controlling numerous parameters in other modules, making it an ideal companion for crafting gradual shifts in ambient soundscapes or venturing into dynamic and evolving patch creations. 1/3 key features Four Chained LFOs Controllable Time Attenuator per LFO Output Four Random Voltages Adjustable Amount of Random and Chaos EVIL CV Input Random Gate Wrong Polarity Protection specs & downloads width: 12 HP depth: 28 mm power: 75 mA @ +12V / 55 mA @ -12V documentation videos description / manual The GOOD side consists of a chain of four LFOs. Each LFOs only starts to rise when its predecessor descends. The four knobs control the time it takes for each LFO to rise and simultaneously controls the time it takes for the predecessor to descend. The LFOs have individual outputs with an attenuator. This row of low frequency oscillators can either create very slow envelopes followed by fast changes, just very slow voltage changes or a chain of fast swinging LFOs with their voltage never being the same on the four outputs at a time. The EVIL side generates random voltages that can be influenced by the knobs EVIL 1 and EVIL 2. These change the amount and amplitude of chaos being created. The voltages may move very slow, but also evolve to a burst of changing voltages over the course time. Just like on the good side there are also four outputs on the evil side. Additionally there is a GATE output that provides random gates in conjunction with the EVIL voltages. The EVIL CV input gives voltage control over the amplitude of chaos. An attenuator may lower the amount of voltage being inserted to the EVIL side. The last LFO of the GOOD side is normalised to the CV input of the EVIL side, if no patch cable is inserted into EVIL CV. The voltage range is between +/-3V for GOOD and +/-10V for EVIL. The EVIL outputs usually wobble and meander around +/-2V, but also show peaks of +/-5V, and +/-10V (expecially output V). Using the EVIL CV input forces the circuit to generate peaks more frequently. The gate has a voltage of approx. +6V. prev Up next

Modulation & Random catch / sample & hold / 6 HP ⇣ Catch is a modular swiss army knife combining a great variety of useful functions in 6 HP modular width. 1/3 key features Stepped Random Generator Sample and Hold CV Clock Generator Attenuverter Offset Noise Source LED indication Skiff friendly Wrong polarity protection specs & downloads width: 6 HP depth: 28 mm power: 38 mA @ +12V / 27 mA @ -12V documentation videos description / manual Catch serves as a modular multitool, integrating a diverse range of valuable functions: Stepped Random Generator Sample and Hold CV Clock Generator Attenuverter Offset Noise Source On top of the module you will find the clock generator with its speed potentiometer. Turning CW will increase the speed of the clocks generated. The speed range can be altered with the ON-OFF-ON switch and CV controlled via the CV jack. The clock signal is forwarded to the CLOCK OUT and to the internal Stepped Random Generator and Sample and Hold circuit. If nothing is patched into the TRIG IN jack, the clock triggers the Stepped Random Generator and provides a random voltage on the C/OUT jack. This connection will be cut in case of an external trigger signal being patched to TRIG. In case of a voltage being patched to IN, this source will be sampled and caught on trig on the C/OUT jack. Either the external or the internal voltage signal can be offset and attenuverted and will be supplied on the A/OUT jack, The left bicolor LED indicates the current voltage being adjusted by the offset and attenuverter and the right bicolor LED shows the random voltage being caught on internal or external trigger. If you patch OUT into your audio path, you will hear very warm white noise. prev Up next

Effects clipping cat / vactrol distortion with diode clipping & lpg / 4 HP ⇣ CLIPPING CAT will make your sounds meow! It's a Vactrol-based distortion that will easily cram a lot of filth and grit into your tone. From sine waves to kick drums, this cat won't miss a scratching post! 1/3 key features Vactrol Distortion Diode Clipping Soft & Hard Clipping „Diode Playground“ for Easy Replacement of Soft Clipping Diodes Vactrol LPG Skiff friendly Wrong polarity protection specs & downloads width: 4 HP depth: 30 mm power: 20 mA @ +12V / 20 mA @ -12V documentation videos description / manual Based on the passive and very simple WORKMATE CLIPPING CAT, this souped-up 3U module now features three main controls. GAIN determines the amount of distortion applied to your signal. LEVEL decreases the signal level that is fed into the circuit and the CAT/NO CAT switch activates or deactivates the additional diode clipping function. You can choose whether you want hard (CAT) or soft clipping (NO CAT). Depending on the diodes you solder in, the clipping behaviour and sound will change drastically. CLIPPING CAT will only blink and meow if you set the switch to "CAT" and have set a good amount of gain. The amount of gain can also be voltage controlled using the CV GAIN input socket. Each incoming CV signal can be attenuated with the corresponding potentiometer. The overall gain range can be adjusted using a trimmer on the back of the board. This CV functionality also allows CLIPPING CAT to be used as a low-pass gate with the smooth vactrol-based behaviour we all love. Another trimmer allows the circuit to be optimised for LPG or distortion purposes. To simplify the exchange of diodes for soft clipping mode, there is a "diode playground" on the back of the board where you can easily exchange through hole diodes . Feel free to experiment with different types of diodes and discover novel distortion sounds. Purr! prev Up next

Oscillator chiasso v2 / analog fm drum synth / 14 HP ⇣ CHIASSO V2 stands as an exceptional oscillator, perfect for generating dynamic Techno sounds that consistently captivate through each knob adjustment. In its V2 iteration, it retains the same exceptional sound foundation found in V1. However, V2 introduces innovative enhancements like CV decay inputs and an added noise source for oscillator A, promising even more sonic possibilities. 1/3 key features Two Analog VCOs Two LFOs SQUARE and TRIANGLE Waveforms for OSC and LFO Cross Modulation CV Decay Fade Potentiometer to adjust the Oscillator Mix Trigger and Pitch Normalization Wrong Polarity Protection specs & downloads width: 14 HP depth: 28 mm power: 55 mA @ +12V / 35 mA @ -12V documentation videos description / manual The module has two oscillators that can generate square or triangular waveforms that you can seamlessly crossfade with the WAVE potentiometers. Each oscillator has its own CV decay envelope, a pitch potentiometer and can be triggered with a trigger signal patched to the left TRIG input as well as individually via the left and right TRIG inputs. A fade potentiometer offers the possibility to manually fade between both oscillators to adjust the mix. Noise can be added to the left oscillator A to make it a little dirtier. There are PITCH CV inputs with attenuators for each voice which, although they don´t track exactly 1 V/OCT, are very useful for changing the mood of each signal to create very organic and moving sounds. The audio output of each side is normalised to the PITCH CV input of the opposite side. The left side is connected after the VCA and the right side before the VCA to achieve different types of cross-modulations and to apply modulation according to incoming trigger signals. In addition, the module has two individual LFOs with square or triangular waveforms that can be fed to the oscillators for further frequency modulation synthesis. Both LFOs have an attenuator to adjust the strength of the modulation and a RATE potentiometer to change the speed of the LFO cycle. The signals of the two oscillators are mixed and output at the OUT socket. prev Up next

Sequencer push / manual sequential switch / 4 HP ⇣ This module was inspired by Make Noise „Pressure Points“, which has three rows of four tunable voltages. PUSH takes one of these rows in order to play melodies, change timbral settings of oscillators or even to store simple presets for a given parameter of any other module in an HP friendly design. 1/3 key features Manual Sequential Switch Four Voltages Loop Sequence in 2, 3 or 4 Steps Reset to Jump to Step 1 Variable Maximum Voltage via Trimmer Pot LED Indicators Wrong Polarity Protection specs & downloads width: 4 HP depth: 28 mm power: 35 mA @ +12V / 30 mA @ -12V documentation videos description / manual PUSH is a single four position manual sequential switch. There are four steps, each with a potentiometer to set a specific voltage. With a push on the PUSH button one of these values is selected and supplied at the OUTPUT jack. The sequence always starts with the first step and you may switch through the other three potentiometer/voltages sequentially. The sequence will loop when you have reached the last step and press the button further more. You can set the length of the sequence from 2 up to 4 steps. With the help of the RESET button you may jump to the first value at any given time. Additionally you can simultaneously change the maximum voltage of all four steps from 5V to 10V with the help of the little trimmer pot VR on the top. You can choose to have any voltage between 5V and 10V. Turning the trimmer pot will instantly change the value for all four potentiometers. prev Up next