two sides / utility multiple / 6 HP ⇣ Two Sides is way more than a standard multiple. 1/3 key features Utility Module combining more than 8 Functions Mix, Multiply, Attenuate, Control, Route, Fade, Switch or Swap any Signal (CV or Audio) LED Indicators Seperate single Outs for each Channel Wrong polarity protection specs & downloads width: 6 HP depth: 28 mm power: 35 mA @ +12V / 15 mA @ -12V documentation videos description / manual TWO SIDES has the following functions: 1 to 5 Buffered Multiple Individual Attennuation for each side. Uni- or Bipolar selectable for each side via Jumper. 2-Channel Mixer Signal On/OFF Switch Fade two Sources (CV or Audio)Swap Destinations Ringmodulate them or Control the Amplitute of Input A with a CV Signal in Input B (VCA) You may also use any combination of the above mentioned functions. The two LEDs indicate the current signal of each side. Even the Logo is illuminated according to the processed signals. prev Up next

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

adsr / envelope generator offdering three distinct lentgh modes / 4 HP ⇣ ADSR is a classic Envelope Generator creating an envelope with an Attack, Decay, Sustain and Release stage. 1/3 key features ADSR Envelope Generator Regular and Inverted Output Re-Trigger Input Three Length Modes Snappy from 20 micro seconds until evolving to 110 seconds Skiff friendly Wrong polarity protection specs & downloads width: 4 HP depth: 28 mm power: 25 mA @ +12V / 25 mA @ -12V documentation videos description / manual ADSR can be triggered with a Gate signal and will output the envelope with a range of 0V to +8V on the regular output jack and 0V to -8V on the inverted output jack. The envelope may be re-triggered using the RTRG input as long as the Gate on the Gate Input is high. ADSR has three different Length Modes from Slow over Moderate to Fast. The envelope can be very short (20uS) up to very long (110s) making it a useful tool for percussion like sounds and evolving soundscapes. The Moderate Mode is the best option for regular synth sounds. The LED between the A (Attack) and D (Decay) potentiometer indicates the current state of the envelope. prev Up next

2xlfo / dual analog lfo / 3 HP ⇣ 2xLFO is a simple dual analog low frequency oscillator with two waveforms each. 1/3 key features Dual LFO with 2 Waveforms each Triangle, Pulse Waveforms selectable via Switch Rate Range changeable via Switch LFO Rate potentiometers Suitable for Audio Rates Wrong polarity protection Skiff friendly specs & downloads width: 3 HP depth: 30 mm power: 15 mA @ +12V / 15 mA @ -12V documentation videos description / manual The module offers the choice between a triangle and square waveform, conveniently switchable. The rate can be finely tuned using dedicated potentiometers. A switch allows seamless adjustment from extremely slow to audio-frequency rates. The module features two LEDs that provide visual feedback on the current LFO voltage state. Beyond its traditional LFO functionality, this module also operates as a dual sound source. It's particularly well-suited for crafting tonal percussion sounds that don't require pitch modifications via CV. With a straightforward design, the module comprises only 19 distinct solderable components, making it an uncomplicated build. prev Up next

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

efi / dual-mode analog filter / 4 HP ⇣ EFI is an analog multi-mode filter that draws inspiration from the iconic KORG MS-20 filter, refined to seamlessly fit within a compact 4 HP module. Celebrated as one of our top-performing modules, EFI stands as an essential addition to smaller modular setups, allowing you to save valuable HP without compromising on functionality. EFI_BACK.jpg 1/3 key features Analog Dual-Mode-Filter Filter Modes: LP, HP (+ LP Overdrive via Jumper) Resonance Control Two CV Inputs Two CV Attenuators Wrong Polarity Protection specs & downloads width: 4 HP depth: 28 mm power: 26 mA @ +12V / 24 mA @ -12V documentation videos description / manual The front panel features a switch for easy toggling between Low Pass and High Pass Modes. Alongside, you'll find two CV inputs, each equipped with its own attenuator for precise control. Experience the potential for self-oscillation with the Resonance, while a third mode can be accessed via a back-panel jumper. In this mode, the Resonance swiftly overdrives in Low Pass Mode, producing captivating liquid-like overtones. Building this module is a breeze, requiring only 24 readily available components, making it an accessible DIY project. 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

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

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

franz / analog multimode filter with lfo and cp3 mixer / 10 HP ⇣ Experience the ultimate sonic bliss with this filter featuring a smooth, buttery tone that wraps your sound in warmth. The integrated LFO adds rhythmic pulsations, while the CP3 mixer ensures seamless blending of your audio sources. 1/3 key features Analog OTA Filter 4 Filter Outputs: Low Pass, High Pass, Band Pass, Notch Internal LFO with two Waveforms: Triangle & Square LFO Reset,LED indicating LFO rate, LFO normalized to Filter ircuit Apply two LFO waveforms at the same time Attenuator for each LFO Wave or external CV 3-Channel Transistor based Mixer MIX out to use the Filter as a single Mixer Block Volume control for each Mixer Channel Wrong Polarity Protection specs & downloads width: 10 HP depth: 38 mm power: 83 mA @ +12V / 72 mA @ -12V documentation videos description / manual The filter is based on the CA3080 chip and offers four different outputs: Low Pass High Pass Band Pass Notch Tweak the dedicated knobs to finely tune the CUTOFF frequency and RESONANCE according to your preferences. This versatile module not only features a filter circuit but also houses a resettable LFO, offering both TRIANGLE and SQUARE waveforms. The LFO is internally linked to the Filter CUTOFF, modifiable using the CV1/TRI and SQU/CV2 knobs. These waveforms can be simultaneously utilized and reset via an external trigger. The automatic normalization of each LFO waveform disengages upon connecting an external CV source to the CV1 or CV2 input jacks. Adjust the LFO Rate using the designated potentiometer, with its speed indicated by a dual-colored LED. For waveform layering, a transistor-based 3-channel mixer is conveniently situated at the module's base. The mixer's sum directly feeds into the filter and is also routed to the MIX output jack. Precisely control input volumes per channel (VOL1-3) and collectively adjust them along with the filter INPUT potentiometer. prev Up next

honeyeater v3 / cem3340 analog vco with sub-oscillator / 6 HP ⇣ HONEYEATER is a classic analog VCO featuring two sub-oscillators and mixable waveforms. Built around the renowned CEM3340 "Curtis Oscillator" precision VCO chip — found in legendary synths like the Sequential Prophet-5 and Oberheim OB-8 — this module delivers rich and raw analog sounds in a compact, low-HP format. It is one of our most popular modules! 1/4 key features CEM3340 Analog Oscillator 5 Mixable Waveforms White Noise Two Blendable Sub-Oscillators Linear & Exponential FM VC Pulse Width Modulation Skiff friendly Wrong polarity protection specs & downloads width: 6 HP depth: 30 mm power: 56 mA @ +12V / 45 mA @ -12V documentation videos description / manual Honeyeater is the ideal choice for big sounds in compact cases! It serves as a versatile workhorse oscillator, capable of producing both classic and complex waveforms beyond typical analog oscillators. Use the COARSE and FINE knobs to adjust pitch, with FINE allowing smaller, more precise pitch changes. Increase the volume of the Pulse, Triangle, or Sawtooth waves, as well as the Suboscillators, by raising the three faders. Note that waveforms may slightly overdrive in the top third of each fader’s range. You can also switch between a triangle or sawtooth waveform for the middle fader. The SUB MIX knob controls the two sub-octaves: turning it right increases the volume of the sub-oscillator one octave below the root pitch, while turning it left boosts the one two octaves below. At the center, both sub-octaves play equally; at either end, the opposite sub is fully muted. Ensure the SUB fader (3) is raised to blend sub-octaves into the main mix. To add white noise for a grittier sound, turn the NOISE knob to the right. The Pulse Width of the Pulse waveform can be adjusted manually or via CV using the knob above the PWM CV input. Connect any CV source (0V to +5V) to modulate Pulse Width here. The FM input accepts any control voltage to frequency-modulate the oscillator, with modes switchable between linear and exponential via the LIN/EXP switch. Honeyeater supports both hard and soft sync by patching an external oscillator’s output (ideally a sawtooth wave) to the SYNC input. Select between sync types via a jumper on the back of the module. When assembling the Honeyeater yourself, you have the option to use either a DIP-16 through-hole CEM3340 IC or a SOIC-16 SMD variant, which can be mounted using a small adapter board. HONEYEATER QUICK START GUIDE: HONEYEATER_V3_QUICK_START .pdf Download PDF • 453KB prev Up next

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