klangmaschine / dual digital fm synthesizer / 16 HP ⇣ KLANGMASCHINE is a powerful tool for creating a wide range of sounds, from simple sine waves to complex and evolving textures. It combines two simple frequency modulated synthesizers to create a very powerful and versatile digital sound source. 1/3 key features 2 Voice FM Synthesizer plus Noise Generator CV over all FM Parameters Tone Control Internal VCA Internal Mixer Individual Outputs Wrong Polarity Protection ​ specs & downloads width: 16 HP depth: 28 mm power: 98 mA @ +12V / 56 mA @ -12V documents videos description / manual FREQUENCY MODULATION (FM) SYNTHESIS is a method of sound synthesis that uses the modulation of the frequency of one waveform by another waveform to create complex and evolving timbres. FM synthesis uses a modulator waveform to modulate the frequency of a carrier waveform. The frequency of the modulator is usually in the audio range, while the frequency of the carrier determines the pitch of the resulting sound. On both sides of the module are the parameter controls for the FM voices. The sliding potentiometers control FM AMT, FM FREQUENCY and PITCH. Each parameter can be voltage controlled. Attenuators control the amount of incoming CV. If nothing is connected to the CV inputs, the above CV attenuators change the response curve of the parameter sliders. Above the sliders is a TONE control, which lets you emphasize either low or high harmonics, and a VOLUME control, which affects only the MIX OUT. Connect your pitch CV to the V/OCT to play notes. The left V/OCT input is normalized to the right. In addition to the two synthesizer voices, there is a volume control to add white noise to the MIX OUT. You can either listen to the oscillators individually at the OUT jacks, or tap a mix of all three sound sources at the MIX OUT. If you connect an envelope CV to the VCA CV input, you can control an internal VCA. If no envelope CV is connected to the VCA CV input, the LED lights dimly to indicate that all three voices are being output at the MIX OUT. As the level rises, the LED indicates the volume level. If a patch cord is connected to VCA CV without CV, the LED is off to indicate that no signal is being output. If the VCA is opened via CV, the LED again shows the volume level. In the "Just a Minute - Live Techno" videos shown above I use KLANGMASCHINE for the lead sound. Have a listen! prev Up next

pow! / usb power supply unit / 3 HP ⇣ POW ! is a 3HP USB Pow er Supply Unit for Eurorack. 1/3 key features USB PSU for Eurorack 300mA +12V 150mA -12V 500mA +5V from USB On/OFF Switch LED indication Skiff friendly ​ specs & downloads width: 3 HP depth: 25 mm power: +5V USB-C Power documents videos description / manual With this compact module, you can conveniently energize your Eurorack modules using any +5V USB power source. Just plug in a C-Type connector to the USB jack, and you'll have a generous 300mA +12V and 150mA -12V available through the 2x5 male header on the PCB's underside. Remember to have a power cable with 2x5 female connectors at both ends. Control the power flow with the built-in switch, with an LED indicating the current status. Tailored for modest power needs in compact setups, this Power Supply Unit is designed to accommodate one or two modules in small cases. prev Up next

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 documents 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. prev Up next

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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

hapha / compact locked random voltage / 4 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 documents videos description / manual 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 a control voltage into the serial input SER which will directly influence the random voltages at the outputs. prev Up next

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 via CV 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 Phase Inversion Switch Skiff friendly Wrong polarity protection ​ specs & downloads width: 8 HP depth: 30 mm power: 59 mA @ +12V / 43 mA @ -12V documents videos description / manual Connect a stereo or mono signal to the IN sockets (a mono signal to IN L is automatically routed to IN R), and retrieve the output signal from the OUT. 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 sound reproduction. 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. If you are looking for a smaller and simpler mono version, please check out the predecessor PEDAL PAL ! prev Up next

isi wren / repeatable random gate and cv generator / 4 HP ⇣ ISI WREN is a great sequencer to quickly generate random sequences and lock them on repeat to create catchy and pounding techno synth lines. 1/3 key features Random CV and Gate Looped Sequences Change Sequence Length Adjust Sequence Range Repeat Different Sequences CV Loop ON/OFF CV Length, Range and Repeat Sync to external Clock Skiff friendly Wrong polarity protection ​ specs & downloads width: 4 HP depth: 30 mm power: 35 mA @ +12V / 12 mA @ -12V documents videos description / manual ISI WREN is a digital sequencer that generates random gate and CV signals synchronized to a clock connected to the CLK input. Depending on the CHANCE slider potentiometer, it either generates random gate and CV signals in the center position or locks the sequence in the upper or lower position. The closer the knob is to the center position, the more frequently the signals change. When a gate signal is patched to the RPT input, the sequence is repeated regardless of the slider position. If you repeat a sequence in the upper position of the slider, two different sequences are repeated alternately. In the lower position, only one sequence is repeated. With the MODE slider you can set the length of the repeated sequence, the CV range and the repetition of the sequences. Set the mode toggle switch to STP and adjust the sequence length from 4 to 16 steps. Switch to RNG and adjust the CV range (octave range). In RPT mode, you can adjust how many times an alternating sequence repeats when the CHANCE slider is in the up position. Mode settings can also be voltage controlled. Patch a CV signal to MODE and adjust its level with the attenuator in order to change the length of a sequence, its range and the repeat mode externally. If no cable is patched to MODE the attenuator acts as a response adjustment of the MODE knob (e.g. smaller range of steps with one turn of the MODE knob if the attenuator is turned to the left). Use the GATE output to control an external envelope generator and connect the CV output to the 1V/OCT input of any oscillator. prev Up next

envoltura / the iconic dual analog envelope / 14 HP ⇣ Experience the classic charm of analog envelopes based on the Roland System 100M 140 Dual ADSR module, made snappier with intuitive visual controls. Furthermore, thanks to its built-in VCA, manual level controls, potent cyclical gate generator, and user-friendly trigger buttons, ENVOLTURA elevates your sound-sculpting prowess to new heights. And when you double it up, prepare for twice the thrill! 1/3 key features Based on System 100M 140 Module Dual ADSR CV Level Control Inverted Output Retrigger Push Inputs Short and Fast Switch Manual Trigger Buttons Cycle Functionality Skiff friendly Wrong polarity protection ​ specs & downloads width: 14 HP depth: 30 mm power: 89 mA @ +12V / 56 mA @ -12V documents videos description / manual ENVOLTURA boasts a highly responsive analog envelope with controls for ATTACK, DECAY, SUSTAIN, and RELEASE. When a gate signal is applied to the GATE input, the envelope is triggered, and a corresponding CV signal is produced at the OUT, with an inverted version available at the INV output. Furthermore, an end-of-cycle GATE signal can be accessed at the EOC jack, conveniently indicated by an LED indicator. You have the flexibility to retrigger the DECAY phase of the envelope by applying a trigger signal to the RTRG input. IN addition to manual level adjustment via the slider level potentiometer, you can modulate the envelope's level using an internal VCA by patching a CV signal to the VEL input socket. An exclusive attenuator enables precise control over the level modulation. For dynamic modulation, simply patch any CV source to the PUSH inputs and manipulate both the envelope's length and level. Fine-tune the overall length range with the SLOW/FAST switches, and if desired, activate the CYC switch to let the envelopes cycle within specific ranges. prev Up next

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 documents 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

toolbox / multi-function unit / 6 HP & 22 HP ⇣ TOOLBOX is your HP-friendly Swiss Army knife, incorporating the most essential functions for your modular system. 1/6 key features 8 Functions in 1 Module Combine Functions via Normalization of Inputs Table Top Case friendly Wrong polarity protection specs & downloads width: 6 HP & 22 HP depth: 25 mm power: 42 mA @ +12V / 38 mA @ -12V documents videos description / manual Fader 2-Channel Mixer Swap (exchange the destination of one or two sources via switch) On/Off Switch Attenuverter (unipolar/bipolar via switch) 1 to 3 Buffered Multiple Inverter Volume Control ...and any combination of these as the Fade inputs are normalized to Swap and the 1 to 3 Attenuverter/Multiple/Inverter. You can use it for audio as well as for CV signals. Pots and Switch are located on the bottom side for for easy use in table top cases. This module is availbable in 3U and 1U! prev Up next

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