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. 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

Modulation & Random lfor / digital lfo and stepped random generator / 4 HP ⇣ Combining a digital Low Frequency Oscillator with a Stepped Random Generator, this module offers three distinct voltage outputs in the form of Pulse, Triangle, and Random waveforms. The LFO functions as both a voltage and trigger source, while the Stepped Random feature can be seamlessly looped for continuous operation. LFOR_BACK.jpg 1/3 key features LFO with 3 Waveforms Triangle, Pulse and Stepped Random LFO Rate potentiometer Voltage Control over Rate LFO Reset Stepped Random lockable to 16 or 8 steps Random Voltages normalized to LFO Rate Pulse can act as Rythm Generator Wrong polarity protection Skiff friendly specs & downloads width: 4 HP depth: 28 mm power: 25 mA @ +12V / 20 mA @ -12V documentation videos description / manual The LFO provides three voltages in shape of Pulse, Triangle and Random. It can be used as a voltage and trigger source. The frequency of the LFO can be changed using the Rate potentiometer on top. The LED is indicating the current speed. The Rate of the LFO may be voltage controlled using the Rate CV jack. The small potentiometer acts as an attenuator. Additionally the LFO cycle can be reset via a trigger signal at the Reset jack. The Triangle output provides a standard triangle waveform. Random supplies a randomly stepped voltage at LFO rate. This random voltage is normalized to the LFO CV in creating some interesting random voltages on the other outputs. This connection can be interrupted by inserting a patch cable to Rate CV. Using the Random Lock Switch it is possible to lock the random steps to identical patterns of 16 (mid position) or 8 (down position) steps. If the switch is positioned upwards it is completely random. Patching a voltage to RNDM CV will give you CV control of the Random Lock (switch must be in mid position). Any voltage above 3 volts will produce random steps, any voltage below 4 volts will lock the random out to a pattern of 8 steps. Pulse out is not a typical pulse wave you would expect from an LFO. It is rather a rythmical trigger producing one long pulse at the start of the cycle and a short pulse at the end. This way and by the normalized random voltage (if the CV attenuator is turned clockwise), you will have a wide range of random or locked pulses to trigger VCAs or sequencers. A simple AVR-programmer is neccessary to complete the build. Nevertheless it is a very easy build with only 37 parts in total. prev Up next

Utilities & PSU pedal pal stereo / fx pedal integration module / 8 HP ⇣ Enhance your creative palette by seamlessly integrating your favorite guitar FX pedals into the realm of Eurorack modular. Take command over the amount and tone of the signal sent to your pedal and manipulate the expression pedal input using CV. To double the excitement, this module can handle stereo signals! 1/3 key features Stereo FX-Pedal Integration Expression Input CV Send CV Send and Return Level Controls Send Tone EQ Dry/Wet Control TRS Connections to FX Pedal Use it with Line or Modular Levels Boost Dry and/or Wet Signals with a max. Gain of +20 dB Phase Inversion Switch Skiff friendly Wrong polarity protection specs & downloads width: 8 HP depth: 30 mm power: 59 mA @ +12V / 43 mA @ -12V documentation videos description / manual Connect a stereo or mono signal to the IN sockets (a mono signal to IN L is normalized to IN R), and retrieve the output signal from the OUT jacks. Link your FX pedal's inputs to the SEND output using a TRS audio cable, and connect the FX pedal's output to the RTRN return socket with another TRS audio cable. Fine-tune the blend of dry and wet signals with the central DRY WET knob. The level gain of the dry and the wet signal can be adjusted independently via trimmers on the back of the module. Rotate SEND to the right to increase the audio level sent to the pedal's input. The attenuator beneath the SEND CV jack controls the maximum send signal level, so remember to turn it to the right to activate the SEND jack. Increase the RETURN knob to control the effect signal's level returning from the FX pedal. Be cautious as the send signal can potentially overload the FX pedal's input, so adjust the send amount with care. Both the SEND and RETURN controls provide precise control over the signals sent to and from the effects unit for clean or slightly overdriven signals. The ST Modular logo LEDs indicate whether a signal is being sent from or returned to the module. Turn the TONE knob to the right to emphasize high frequencies or to the left for low frequencies in the SEND signal. Keep it in the center position to have no further effect. Activate the PHASE button to align the audio return signal with the dry input signal if your effects pedal reverses its phase. You may need to make further adjustments to the send and return settings afterwards. The real fun begins when you modulate the amount of audio sent to the FX pedal. Simply introduce a CV signal into the SEND CV input and adjust its level with the attenuator. Furthermore, you can also control the pedal's EXPRESSION input using CV. Connect a TRS audio cable to the EXPR I/O, and the voltage provided by the pedal will be attenuated with the EXPR knob and send back to the pedal, allowing you to manually control the expression parameters. Alternatively, you can patch modular control voltage into the EXP CV input to control the expression parameters of your FX unit, with the EXPR knob acting as an attenuator. The LED indicates when voltage is being forwarded to the pedal. Please ensure you check your FX pedals' specifications before using PEDAL PAL STEREO. Verify whether the pedal supplies its expression voltage on the tip or ring of the EXPR TRS cable and the accepted voltage level (most commonly 3V or 5V). Adjust the corresponding jumpers on the back of the module accordingly. In the video example below, I'm using an EarthQuaker Devices Avalanche Run Delay and Reverb pedal, which provides 3V on the ring of the TRS expression cable. This pedal is particularly well-suited for PEDAL PAL STEREO, as it allows for quick selection of the expression voltage destination, such as reverb amount, delay time, and more. For convenient parameter adjustments, particularly during live performances, potentiometers are positioned on the lower side, ensuring easy access when the module is mounted in the bottom row of a tabletop case. If you are looking for a smaller and simpler mono version, please check out the predecessor PEDAL PAL ! PEDAL PAL STEREO QUICK START GUIDE: PEDAL_PAL_STEREO_QUICK_START .pdf Download PDF • 667KB prev Up next

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

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

Sequencer flitzem deför / brute sequencer and clock divider / 10 HP ⇣ Flitzem Deför excels as a sequencer for crafting concise, repetitive techno sequences and swift manual sequence alterations. 1/3 key features 4-Step Step Analog Sequencer 3x individual CV Outs to control 3 Oscillators at once 3 Different Sequence Modes: Forwards, Attenuverted, Offset or CV controlled, Backwards Clock or Trigger Through 2x Clock or Trigger Divider adjustable via two Switches Apply Sequence Variations with two Switches Reset CV Input Direction CV input Perfect for Techno Sequences Wrong Polarity Protection specs & downloads width: 10 HP depth: 28 mm power: 45 mA @ +12V / 42 mA @ -12V documentation videos description / manual The FLITZEM DEFÖR is a 4-step sequencer with 3 individual CV outputs. OUT A is providing a 4-step sequence playing forwards. OUT B will output the same as OUT A, but the sequence CV may be attenuverted or offset with the help of two potentiometers. Additionally there is a CV input that may change the pitch of OUT B. In this case the second potentiometer from top right will be an attenuverter for the incoming CV signal. OUT C is playing the same sequence as OUT A, but backwards. In order to trigger other modules in sync there is a CLK OUT that will provide a buffered copy of the incoming CLK or trigger signal. Furthermore the incoming clock or trigger is divided by 2 or 8 and 4 or 16 on the dedicated clock outputs. The division my be changed with two switches. If you like to alternate the sequence of the three CV outputs, there are two switches that will forward the divided clock signals to the sequencer´s clock input. This way you will instantly create breaks, variations and more complex sequences. A trigger signal into the RST input jack will reset the sequencer. Any CV applied to DIR will change the direction. By using the RST and DIR inputs and the four clock division and change switches you will be able to achieve very rhythmical, versatile and interesting sequences you might not expect from a 4-step sequencer. The 3 CV outputs are especially made to control three separate oscillators at once to create brute and heavy sounds and sequences that will surely shake every dancefloor. The attenuvertion on OUT B is super handy to create detune and octave shifting effects and subbasslines that fit the sequence automatically. prev Up next

Modulation & Random hapha / compact locked random voltage / 3 HP ⇣ HAPHA is a valuable tool for enhancing the organic and enjoyable qualities of your patches. This module generates a synchronized random voltage, tied to an external clock signal, and offers the option to stabilize this voltage into a fixed sequence. It's particularly useful for controlling filters and other sound-shaping parameters in your modular system. 1/3 key features Random Gate and CV Clock Sync Lock CV and Gate to a Sequence External CV Input Skiff friendly Wrong polarity protection specs & downloads width: 4 HP depth: 30 mm power: 25 mA @ +12V / 18 mA @ -12V documentation videos description / manual The idea was to generate random sequences by turning a knob. When you turn the LCK knob, a voltage between roughly +9V and -9V is passed to a shift register with an R2R digital-to-analogue converter, which stores the voltages from the pot with each clock signal. Depending on how the control is turned (range and speed), different voltages are sampled, resulting in a different CV and gate sequence. The SER input allows the use of external voltages which are passed to the shift register (mixed with the voltages from the potentiometer). The switch enables or disables the external voltage from the SER input. To use it, simply connect a clock signal to the CLK input. HAPHA will then produce a random GATE signal at the upper output socket and a random CV signal at the lower output socket. You can create and lock a new sequence of voltages and gates by adjusting the LCK knob, and an LED indicator will show when a voltage change occurs. For additional control, if you move the SER switch to the right, you can patch an external voltage (audio or CV) into the serial input SER which will directly influence the random voltages at the outputs. With an external voltage patched, you can still change the sequence by turing the LCK pot. prev Up next

ST Modular is a company specializing in the design and production of modular synthesizers. They offer a wide range of Eurorack modules. Their designs often focus on affordability and DIY kits, allowing musicians and enthusiasts to build their own sound modules while experimenting with modular synthesis. ST Modular is known for producing innovative, compact, and functional designs that cater to both beginners and experienced synth users. Home

Mixer & VCA stm / 3-channel stereo mixer / 4 HP ⇣ STM proves to be an incredibly convenient and user-friendly 3-channel stereo mixer featuring three intuitive volume potentiometers. Its straightforward design allows for easy manipulation, while onboard trimmers enable seamless gain adjustments per channel. This versatile mixer caters to both line and Eurorack levels, all encapsulated within a compact form factor for added space efficiency. 1/3 key features Analog Mixer 3 Stereo Channels +20 dB Gain per Channel LED Indication Skiff friendly Wrong polarity protection specs & downloads width: 4 HP depth: 30 mm power: 24 mA @ +12V / 15 mA @ -12V documentation videos description / manual STM is a simple but very useful 3-channel stereo mixer with three volume potentiometers. The gain per channel can be adjusted with trimmers on the board, making this mixer suitable for line and Eurorack levels. Each of the left inputs is normalized to the corresponding right channel, provided nothing is patched there. prev Up next

Utilities & PSU da / dual attenuverter and offset / 3 HP ⇣ DA provides two channels of audio/CV processing with the help of two active attenuverters. 1/3 key features Dual Attenuverter Dual -5V to +5V Source Offset and Mixer LED CV Indication Wrong polarity protection specs & downloads width: 3 HP depth: 25 mm power: 12 mA @ +12V / 12 mA @ -12V documentation videos description / manual Unconnected inputs are normalized to an internal +5V constant voltage, which is very helpful to apply a specific voltage from -5V to +5V to another module´s CV input. The output of the first channel is da isy-chained to the second, allowing the 2 channels being mixed together. The second channel may act as an offset for the first channel. Use this module to attenuate or mix signals, add an offset or change a CV signal´s polarity. prev Up next

Utilities & PSU cause & effect / voltage reader, sample & hold and gate switch / 4 HP & 20 HP ⇣ Introducing the Cause & Effect module – the maestro of musical mischief in your Eurorack setup. It's like the conductor of a whimsical symphony, where flipping switches and twiddling knobs creates a chain reaction that turns chaos into pure sonic magic. Who knew that cause and effect could be this much fun? 1/6 key features Three Utility Tools Voltage Reader for Gates Hold for Sampled Voltages Gate Switch Gate Switch Inverter Two Hold Modes Inputs Normalised Accepted input voltages for all inputs: -8V to +8V (CV & Audio). Available in Intellijel and Pulp Logic Tile Format Skiff friendly specs & downloads width: 4 HP & 20 HP depth: 30 mm power: 35 mA @ +12V / 31 mA @ -12V documentation videos description / manual The first unit is a VOLTAGE READER, that outputs a gate signal according to a limit set with the help of the READ LIMIT potentiometer. If the limit set (any voltage between -6V and +6V) is reached by the incoming voltage, the R GATE output will be high. The limit may also be controlled via external control voltage at the LIMIT CV jack. This so-called comparator outputs a gate with an amplitude of +/-5V, which also makes it usable as a square wave generator with pulse with modulation via the READ LIMIT potentiometer. Any voltage applied to READ IN is normalised to HOLD IN and IN A. R GATE is normalised to H GATE and SW GATE. This way only one signal is necessary to control both other units. The second unit is called HOLD. In one mode it can sample and store a voltage from the HOLD IN jack and supply it at the HOLD OUT jack, if gate at H GATE is high. In another mode it can pass through the incoming voltage when gate is high. It then samples and stores the last voltage value applied when gate switches to low. The modes are selectable via the HOLD MODE switch. The third unit is a GATE SWITCH. Apply a gate signal to the SW GATE input to route IN A or IN B to OUT. If the gate signal is high, IN A is switched through, and if the gate signal is low, IN B is switched through. When only IN A is connected and IN B is not, OUT produces an inverted version of IN A when the gate is low, and a non-inverted version when high. When only IN B is connected and IN A patched with a dummy cable (a cable that is not connected to another module), IN B can be switched off by a gate signal. If nothing is patched to IN A, the VOLTAGE READER GATE output is normalized to this input. This module is available in 3U and 1U! CAUSE & EFFECT QUICK START GUIDE : CAUSE_EFFECT_QUICK_START .pdf Download PDF • 452KB prev Up next

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