oberhausen / analog complex oscillator / 42 HP ⇣ OBERHAUSEN is a CEM3340 based Dual Voltage Controlled Analog Oscillator designed to create a wide range of complex waveforms. It wasn't designed to offer the most perfect waveforms, but definitely ones with lots of character and grit. OBERHAUSEN features two principle oscillators and two modulation oscillators. 1/3 key features Analog Complex Oscillator 2x CEM3340 based Principal Oscillator 2x Modulation Oscillator 8x Waveform Output Mix Waveforms with 8 Slide Potentiometers Blend Principal Oscillators to One Main Output Create a Wide Range of Different Waveforms Skiff Friendly Wrong Polarity Protection specs & downloads Width: 42 HP Depth: 28 mm Power: 110 mA @ +12V / 90 mA @ -12V documentation videos description / manual Both principal oscillators offer five different waveforms. Each waveform´s level can be adjusted with a dedicated volume slide potentiometer and is available at a separate output jack. The sum of the OSC1 and OSC2 waveforms can be blended either manually with the large potentiometer in the middle of the module or via CV and is available at the main OUT socket. Each sum is also supplied at the OSC1 and OSC2 output jacks separately (after BLEND). OSC1 (Principal Oscillator) NOISE - White Noise with a fixed high pass filter at 320Hz. SUB - Two Sub-octave waves based on the SAWTOOTH waveform. They can be activated individually with the SUB -1 and SUB-2 switches. PULSE - PULSE waveform with adjustable PULSE-WIDTH via PW knob or CV with a dedicated attenuator PWM CV. TRI/SAW - Either a TRIANGLE or SAWTOOTH waveform according to the TRI/SAW switch. TONE - Accentuates either low or high frequencies of all OSC1 waveforms. FM - FM input for either EXPONENTIAL or LINEAR FM, adjustable via FM switch (mid position is off). V/OCT - 1V per octave input and a precision duplicate output of the incoming CV signal for further external processing. FRONT PANEL CALIBRATION & GAIN - A trimmer potentiometer for V/OCT tuning and OSC GAIN is located on the front side of the module. OSC2 (Principal Oscillator) TRI/SAW - Either a TRIANGLE or SAWTOOTH waveform according to the TRI/SAW switch. PULSE - PULSE waveform with adjustable PULSE-WIDTH via PW knob or CV with a dedicated attenuator PWM CV. OSC1´s PWM CV input is normalized to the OSC2 pulse-width modulation input. TIMBRE - Buchla inspired timbre generator. The timbre setting can be changed with the TIMBRE knob or via the CV input with an attenuator. SINE - Pure and analog SINE wave. FM - Either EXPONENTIAL or LINEAR FM, adjustable via FM switch (mid position is off). Can be generated internally or via external CV. FM VCA - The FM input´s amplification can be controlled via an internal VCA. As soon as a jack is plugged into the FM VCA input jack FM modulation will only be applied in accordance to an incoming CV signal (such as an LFO or Envelope Generator). OSC SYNC - OSC2 can be loosely or tightly synced to OSC1. OVERLOAD - Feedback Distortion with Clipping LED for all OSC2 waveforms. V/OCT - Separate 1V per octave input. OSC1´s 1V/OCT signal is multiplied via a precision buffer and normalized to OSC2´s 1V/OCT input, if no jack is present at the OSC2 V/OCT input. This routing can also be deactivated with the V/OCT INV switch. Additionally the normalized V/OCT signal can be inverted and routed to OSC2, if the V/OCT INV switch is in the down position. FM OSC (Modulation Oscillator) FM OSC only modulates OSC2´s frequency. The RATE can be set with the FM RATE knob. The oscillator´s waveform can be changed from TRIANGLE to OFF to SQUARE WAVE with the FM switch. The amount of modulation applied can be adjusted with the FM CV attenuator, if no jack is plugged into the FM input jack. An LED indicates if FM modulation is active taking any FM VCA modulation into account. With the help of the the FM switch the modulation type can be set to either exponential or linear. MOD OSC (Modulation Oscillator) The MOD OSC is a low frequency oscillator that internally controls BLEND CV, OSC2 TIMBRE CV and OSC1 PWM CV (which is normalized to OSC2 PWM CV). Its RATE can be adjusted with the MOD knob and the final depth is set by the destination CV attenuators BLEND CV, PWM CV and TIMBRE CV. The oscillator´s waveform can be changed from TRIANGLE to OFF to SQUARE WAVE with the MOD switch. MIX & BLEND In order to mix both principal oscillators and their waveforms OBERHAUSEN features two 4-channel mixers and a additional blend mixer. With the help eight dedicated slide potentiometers each waveform´s level can be set. Additionally you can blend between OSC1 and OSC2 either manually, via CV at the BLEND input jack or internally with the MOD OSC and BLEND attenuator. OBERHAUSEN QUICK START GUIDE: OBERHAUSEN_QUICK_START .pdf Download PDF • 453KB prev Up next

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fay v2 / fader, vca, overdrive, decay / 24 HP ⇣ FAY Combines four functional units in a tiny 4HP Module. It consists of a Fader, a VCA, an Overdrive and a Decay/Release Envelope. 1/3 key features Manual Fader/Mixer/Switch Voltage controlled amplifier Decay or Release Envelope Overdrive Functionality Volume Control LED indication Wrong polarity protection ​ specs & downloads width: 4 HP depth: 28 mm power: 25 mA @ +12V / 10 mA @ -12V documentation videos description / manual If you insert two audio sources into the jacks IN A and IN B you may fade between both sources manually using the potentiometer on the bottom. This way you can either mix two waveforms or switch between them.The signal is 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. If there is a trigger signal at the TRIG input you will be able to control the VCA with the internal decay or release envelope (selectable via jumper). Simply insert a trigger signal into the TRIG jack and use the potentiometer below the LED to control the decay length. The LED indicates the current state of voltage. The envelope time can be set to 10ms or 3s via jumper. Thus is can be very snappy for percussion purposes. The decay or release envelope is also provided at the ENV OUT jack to control external modules via CV. Additionally there is an OVERDRIVE option that may be activated via switch. It is also affected by the CV input and shapes the sound to a certain extend. The OVERDRIVE is fairly subtle and more audible on short decay times. Nevertheless it really crunches up some simple waveforms. In contrast to the first version FAY Mk2 has an improved PCB layout and now only consists of one PCB to solder. prev Up next

chasing lights / analog rhythm sequencer / 22 HP ⇣ Discover the comprehensive capabilities of chasing lights, a fully-featured analog trigger sequencer boasting 3 channels and 8 trigger steps per channel, channel chain and a clock divider. 1/3 key features 3x8 Steps Analog Sequencer 8 Trigger or Clock Outputs Clock Divider Channel Chaining Sum Output and B/C Swap Wrong Polarity Protection ​ ​ specs & downloads width: 22 HP depth: 28 mm power: 75 mA @ +12V / 48 mA @ -12V documentation videos description / manual CHASING LIGHTS is a 3-channel analog trigger sequencer with a total of 8 trigger or clock outputs. Each channel has 8 trigger steps that can be activated or inactivated with a push-button per step. LEDs indicate if a step is active and which step is currently playing in a sequence. The trigger signals are available at the output sockets A, B and C. ​ Each sequence can be clocked at its own external clock rate. The A CLOCK input is normalized to the other clock inputs and also to the CLK THRU output to sync CHASING LIGHTS to other sequencers. In addition one CV RESET function is available per channel. ​ The RST ALL button can be used to manually reset all sequences to the first step. It can also act as a HOLD function as long as the button is pressed or the CV input is high. This is especially useful if you want to change the sequence lengths spontaneously. The A/B/C LENGTH switches can be used to set three different lengths per channel. 2/3 and 8 for channel A, 5/6 and 8 for channel B and 5/7 and 8 for channel C. ​ All channels are summed at the SUM output. Each channel can be enabled or disabled for summing using the A/B/C SUM switches. Outputs B and C can be swapped with the SWAP B/C button to create rhythm variations. ​ Wait! No mutes? To have less HP and a better practical experience, the channels should be muted using external modules with on/off switches (such as the vactrol mute ONCE IN A WHILE) or mixers (like PHOEBE, SUM2 or STEREO SUM). ​ The A CLOCK input is also routed to a clock divider. Three divider outputs provide six different clock divisions and can be switched off in the centre position of the corresponding switches. With CLK VARI the counting direction of the internal divider can be changed by CV. This can be used to create interesting clock changes. ​ Channel CHAIN is one of the most interesting functions of CHASING LIGHTS. It is possible to chain all three channels one after the other to create sequences up to a length of 24 steps. There is also an external input CHAIN EXT that can be included in the chain creating even longer sequences. You can set the chain length from 2 to 4 steps, with 2 chaining only channel A and B and 4 steps chaining all channels plus the external input. You can control the speed at which the channels are chained one after the other manually or by CV. It is also possible to reset the chaining sequence to channel A by pressing the CHAIN RESET button or using control voltages. CHASING LIGHTS QUICK START GUIDE: CHASING_LIGHTS_QUICK_START .pdf Download PDF • 1.66MB 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 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

boba fat / dual analog drum generator / 14 HP ⇣ At its core, Boba Fat features two oscillators that empower producers to easily craft both earth-shaking sub-basses and delicate, enveloping kicks. BOBA_BACK_NEW.jpg 1/3 key features Analog Drum Generator Designed for Kick- and Bassdrums Two Voices: Soft Mallet and Hard Mallet Each Mallet may be triggered independently Internal LFO with Sync Volume and Boost per Voice Groove CV Input „Vari“ for Hard Mallet Mod CV Input for Soft Mallet ​ specs & downloads width: 14 HP depth: 28 mm power: 95 mA @ +12V / 65 mA @ -12V documentation videos description / manual BOBA FAT is a dual voice bass- and kick-drum generator. The first voice "soft mallet" generates smooth and warm sounding bass and sub-bass sounds, whereas the second voice "hard mallet" is rather considered to create kick or tom sounds. ​ The eight potentiometers on the left control the soft mallet generator. PITCH controls the frequency, LEVEL the volume and BOOST adds low frequencies turning it clockwise and reduces them turning it counter-clockwise. MOD RATE and MOD ATT control an internal LFO and its attenuation. The LFO will affect the frequency of the soft mallet voice only. Additionally the LFO can by synced to the incoming gate or trigger. TRIG SLEW acts as some kind attack control and reduces transients making it very easy to create very smooth sub-bass drums. DECAY and RELEASE control the duration of the sounds being amplified by an internal VCA. PRESENCE changes the prominence of the sound. ​ The three potentiometers on the very right affect the hard mallet generator. PITCH, LEVEL and BOOST have the same function as for the soft mallet part. PITCH will have a greater effect from 12 to 5 o´clock. Changes from 7 to 12 o´clock are rather subtle, but are set on purpose to add fine nuances with LEVEL and BOOST there. ​ OUT VOL changes the overall loudness of both drums. GATE accepts any gate or trigger signal to activate the generators. A signal at only at GATE will trigger both mallets. If a additional trigger is inserted to GATE S, GATE only triggers soft mallet and GATE S triggers hard mallet separately. This way you can have individual drum tracks for both mallets creating very interesting rhythms. ​ A CV signal at MOD CV will override the internal LFO and CV control soft mallet pitch. It doesn‘t exactly track 1V/oct, but you will be able to play some melodies. A trigger, gate or clock signal at MOD RST lets you reset the internal LFO with an external signal. Any CV signal at VARI will slightly alternate the volume or generate additional triggers for the hard mallet circuit (depending on the incoming voltage). This gives you endless ways of creating fine grooves and interesting rhythms. ​ The circuit was designed to easily go into distortion/clipping to encounter the limits. You may be careful using LEVEL and BOOST controls. Boba Fat definitely needs some fine adjustments in order to find the sweet spots. ​ If you feed the GATE input with a trigger at audio rate you can also use BOBA FAT as a weird sound generator or drone machine. prev Up next

kau'i / dual techno oscillator / 8 HP ⇣ KAU'I is a basic two oscillator sound generator that was designed to create Techno basses and leads. 1/3 key features Dual Analog Oscillator Manual Wave-shape Controls Independent Level Control Mix Output Noise Generator Wrong Polarity Protection specs & downloads width: 8 HP depth: 28 mm power: 55 mA @ +12V / 29 mA @ -12V documentation videos description / manual Oscillators A and B share identical designs but cover distinct pitch ranges. Using the A and B knobs located atop the module, you can seamlessly transition the waveform of each oscillator from a square-wave to a triangle wave. The SHAPE2 knobs then take this waveform and blend it with an independent sine-wave signal for each oscillator. The LVL knobs adjust the volume of each sound generator, while rotating the NOISE knob introduces white noise to oscillator A on the MIX output. Both oscillators feature a pitch control input accompanied by an attenuator. This input follows a linear voltage-to-frequency response (Hz/Oct), making it ideal for generating unique Techno sequences at lower frequencies. At the module's base, you'll discover a MIX OUT combining the outputs of both oscillators, alongside individual outputs for each oscillator. prev Up next

tricay / tripple decay / 6 HP ⇣ Seamlessly trigger three versatile Decay Envelopes by patching a single trigger. 1/3 key features 3x Decay Trigger Multiplier LED indication Skiff friendly Wrong polarity protection ​ specs & downloads width: 6 HP depth: 28 mm power: 38 mA @ +12V / 15 mA @ -12V documentation videos description / manual When you connect a trigger signal to TRIG 1, it's distributed to all three Decay Envelopes. This connection is disrupted when another cable is plugged into TRIG 2 or TRIG 3, allowing for independent triggering of the envelopes if desired. ​ Adjust the decay length using the three potentiometers, spanning from quick and snappy to prolonged and release-like. This versatility suits a variety of sounds, including synth lines and percussions. The status of each Decay Envelope is conveniently displayed through an LED indicator. ​ Voltage is generated and accessible via OUT 1, OUT 2, and OUT 3 jacks, providing options for modulation and sound generation in your setup. ​ Furthermore, by inputting a trigger signal into TRIG 1 and configuring all decay settings fully counter-clockwise, Tricay can function as a Trigger Multiplier, expanding its utility and creative potential. prev Up next

influencer / multiple random cv generator / 14 HP ⇣ INFLUENCER offers a versatile collection of CV tools and creative unpredictability, divided into five distinctive sections, each serving a distinct purpose. With an array of modulation sources and an added touch of uncertainty, INFLUENCER stands as your comprehensive CV powerhouse. 1/3 key features 5x CV Generators Internal Clock & LFO CV Fall Envelope Sample & Hold/Track A/B Comparator Smooth Random CV Noise Out Input Normalisations ​ ​ specs & downloads width: 14 HP depth: 28 mm power: 110 mA @ +12V / 65 mA @ -12V documentation videos description / manual The TOP SECTION is the VC INTERNAL CLOCK and TRIANGLE LFO. The rate of the clock and LFO can be controlled by the RATE knob or CV. The clock signal is normalised to the trigger input of the FALL section. The TRIANGLE wave at the WAVE socket is also routed to the WAVE/RNDM SWITCH of the FALL section. When the switch is in the upper position and the attenuator is turned to the left, the wave will affect the FALL length. In the lower position, the FALL CV is slowly randomised. The SECOND SECTION is a FALL ENVELOPE GENERATOR. It can be triggered internally or externally and its fall time can be controlled by the FALL TIME knob or by CV. An inverted version of the fall output is also available. The THIRD SECTION is the SAMPLE & HOLD section. In one mode, it can sample and store a voltage from the FALL CV socket and output it at the SP OUT socket when the gate at GATE is high (Sample & Hold). In another mode, it can pass through the incoming voltage when GATE is high. It then samples and stores the last voltage applied when GATE is low (Sample & Track). The modes are selected by the MODE switch. The STEPPED potentiometer controls the level of the incoming CV signal. Internally the CLOCK is normalised to the GATE input. The CV input can be fed by an external signal, an internal SMOOTH RANDOM CV or by internal NOISE. Please note that this section may produce noise bursts in Sample & Track mode. The FOURTH SECTION is an AND / OR COMPARATOR that compares two mixable inputs and outputs the MAXIMUM CV and MINIMUM CV of both. It also generates a GATE at B-GATE if IN B is greater than IN A. Note that MIN LED barley flashes with low CV levels.The LAST SECTION is a DUAL SMOOTH RANDOM CV GENERATOR. It provides a constantly changing CV at SMOOTH I and SMOOTH II, slowly meandering in about 60 second cycles. The SMOOTH CV input will affect the SMOOTH outputs in unpredictable ways, sometimes not at all. Internally there is another SMOOTH RANDOM GENERATOR which is normalised to the RNDM switch position of the FALL section, the CLOCK CV and the SOURCE switch of the SAMPLE & HOLD section. Like the others, this SMOOTH GENERATOR may or may not be influenced by the INFLUENCE input. NOISE OUT allows access to the internal NOISE GENERATOR. You could also use the module as an OSCILLATOR. INFLUENCER QUICK START GUIDE: INFLUENCER_QUICK_START .pdf Download PDF • 1.34MB prev Up next

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

spm / 3-channel spread mono mixer / 4 HP ⇣ SPM becomes particularly valuable as it enables the dispersion of two mono signals throughout the stereo field within an audio mix. This capability proves instrumental in tidying up the overall mix, resulting in a more expansive and enjoyable auditory experience for listeners. 1/3 key features Analog Mixer 3 Mono Channels Pan CH 1&2 with one Knob Skiff friendly Wrong polarity protection ​ specs & downloads width: 4 HP depth: 30 mm power: 19 mA @ +12V / 11 mA @ -12V documentation videos description / manual SPM is a 3-Channel Mono 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. In addition, you can pan channel 1 and 2 with the SPREAD potentiometer and thus spread both channels in the stereo field to the left and right in opposite directions. In the centre position, all channels are panned to the centre. If you turn the potentiometer to the left, channel 1 is panned to the left and channel 2 to the right and vice versa. This is very useful to quickly clean up a mix and widen the sound spectrum in the stereo field. prev Up next

cv scan / bi-directional cv router / 6 HP ⇣ Unlock unparalleled signal control with our Bi-Directional CV Router. Effortlessly switch between four sources or route one to four destinations. 1/3 key features Bi-Directional CV Router 4 Inputs or Outputs 4 Attenunators Scan Manually or via CV OFF Switch via Push Button or Gate Signal Manual 0V to +10V CV Supply Wrong polarity protection ​ specs & downloads width: 6 HP depth: 30 mm power: 35 mA @ +12V / 21 mA @ -12V documentation videos description / manual CV SCAN is a 1 to 4 or 4 to 1 CV router that allows you to route one cv signal to four different destinations or route four different CV sources to one CV input. This can be done manually or via CV. Additionally the routing can be interrupted via the OFF switch or with the help of a gate signal. Each CV input/output has a dedicated attenuator. There is also a variable -10V to +10V CV supply. The SCAN potentiometer can be used to scan through the different CV sources/destinations. Turning from left to right you will individually activate inputs/outputs A to D after one another. Additionally turning that knob will supply 0 to +10V on the V OUT jack. This allows you to scan through A to D and also change a CV input of another module in accordance to the potentiometer position. RANGE adjusts the inputs and outputs that can be activated with the SCAN knob or the CV input. Applying -5V to +5V in mid position will give you the full range. Turning RANGE counterclockwise causes only A and B to be active. Turning RANGE clockwise will move the activation range from A/B, A/B/C, B/C, B/C/D and C/D. This gives you a nice control over the range to be scanned. The attenuators may lower the signal that is routed through CV SCAN . Pleae note that they are not able to comepletely kill the signal in order to keep the module bi-directional. CV SCAN was mainly designed to handle CV sources. Still it is also helpful to change waveforms of an oscillator for example. This should be done off the mix as there might be small clicks audible when changing sources/destinations. prev Up next