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Cat: 742403 Rel: 12 Aug 19
 
Tiptop Audio 808 annivesary bundle featuring all six 808 modules
Notes: This limited-time bundle includes all of Tiptop's 808 series drum modules: a classic combination the brings the sounds of the iconic Roland TR-808 to the Eurorack ecosystem. Designed to be the first Eurorack drum machine, Tiptop's 808 series are now some of the best-loved drum modules around, using reverse-engineered 808 circuitry to provide an authentic translation of some of the most powerful electronic instrument sounds in history.

The BD808 and SD808 provide the kick and snare backbone of this set of modules, while the HATS808 offers open and closed hats with gnarly opportunities for creating crushed, filtered hat tones. Top it all off with some claves, cowbell, rimshot, and maracas and you've got a Eurorack drum machine that sounds like it came straight from the early 1980s - in the best way possible.
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 3 in stock $420.95
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quote 742403
Cat: 733238 Rel: 18 Jul 19
 
Eight channel audio & CV sampler for Eurorack - 21HP
Notes: The 'Squid Salmpler' is a Eurorack 8 channel audio & CV sampler. It is designed for immediate real time sampling, editing and mangling within a modular context.

Taking influence from early hardware samplers, The Squid Salmple focuses on usability and instinctive operation, incorporating a proven Pamela's Workout style user interface for minimal screen dependence and a fun, hands on experience.

With support for sampling and playback for both audio and CV, as well as CV control of all parameters, on-the-fly bank loading and saving to USB, The Squid Salmple brings a unique take on old school sampling into the modular realm.

The Squid Salmple comes with a USB Stick containing approximately 90 banks of original carefully curated royalty free samples. This includes a wide range of sounds from classic drum machines and weird synths to field recordings and CV modulations. Banks are provided by both ALM and some of our favourite artists and friends including Mumdance, Solid Blake, Russell Haswell, Lauren Flax, Dave Burraston (NYZ), Sue Zuki, Dungeon Acid, Sasha Lewis and Andrew Duff.
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 3 in stock $403.69
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quote 733238
Cat: 731192 Rel: 19 Jun 19
 
CV-controlled 5-channel stereo mixer - 10HP
Notes: X-PAN is a compact and powerful 5 channel Voltage Controlled Stereo Mixer with Low Noise and High Headroom allowing for creation of complex panoramic audio imagery in just 10hp.

X-PAN is highly responsive to control signals allowing for exploration of the fluctuating stereo sidebands possible with Audio Rate Crossfading and Panning. X-PAN is Direct coupled for use as a CV Processing and Routing toolbox.

X-PAN consists of two full featured Channels and one simpler Channel. The top two Channels each have voltage controlled cross-fading and panning while the third Channel is a stereo aux input with stereo VCA. All three Channels are combined together at the stereo SUM outputs.
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 More than 10 in stock $201.85
Cat: 737544 Rel: 26 Jun 19
 
All-analogue distortion & lowpass filter - 4HP
Notes: Viol Ruina is an all-analogue distortion and lowpass filter with an internal envelope follower and self-modulating cutoff. The four-pole design is reminiscent of the classic filters we all know but with a completely new and slightly ridiculous twist. The independently addressable distortion circuit takes VR into overdriven paradise with a shocking amount of drive. Built-in envelope following makes an easy way to create dynamic patches with the flick of a switch, and feedback FM takes VR to a whole new realm of filthiness. Run a sound through VR, you'll get something cool out of it.
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 5 in stock $134.90
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Cat: 731957 Rel: 03 Jul 19
 
Small compact joystick module with recording function - 8HP
Notes: The module can record the joystick movement up to a length of over a minute. The sequence remains stored in the battery-backed RAM after switching off. When playing the sequence, it can be manipulated in speed and playback direction.

There is a FREEZE function to hold the current joystick position plus an external reset input. In addition, a GATE is set during movement and a CV voltage is output as a function of the joystick movement. The ranges of the X / Y output voltages are bipolar +/- 5v or unipolar from 0 to + 10v. Both channels X and Y have a passive attenuator potentiometer, so that the voltage range can also be set lower.
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 1 in stock $151.13
Cat: 728707 Rel: 24 Jul 19
 
Ring modulator based on the ARP 2600's 4014 ring mod - 8HP
Notes: Mobula is Delta Sound Labs' faithful take on the classic ARP 2600 ring modulator model 4014. This particular processor is renowned the world over for its clean sounding ring modulation effect. Due to its unconventional circuit design, where the positive and negative parts of the signal split between two two-quadrant multipliers, it achieves what is referred to as a four quadrant multiplication.

Built with a combination of modern closely matched and discrete transistors this super skiff friendly module is faithful to all of the original features, with the single addition of independent switching of input signal DC-blocking. This module is DC-coupled; meaning it will happily process both control voltages and audio signals at the flick of a switch. The unique electronic architecture leads to both significantly increased low frequency response and superior carrier suppression when compared to traditional transformer based ring modulation designs.
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 2 in stock $147.07
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quote 728707
Cat: 731219 Rel: 15 Jul 19
 
16 voice oscillator - 12HP
Notes: The Demon Core Oscillator is a 16-voice DCO based on classic keyboard synthesizers.

This module offers also a static detune spread and a CV controllable core stability feature similar to Sequential Synthesizers. It introduces VCO-like pitch drift and jitter, allowing the module to sound like 80's polysynths.

With the help of the separately available expander, the module can be played polyphonically via MIDI.
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 3 in stock $423.98
Cat: 739057 Rel: 19 Jul 19
 
Two channel, +4dBu balanced line level outputs
Notes: This module has 1/8" jacks to accept either mono or stereo audio signals from your modular gear.
It features input level indicator LEDs, and contains all the gain control circuitry necessary to drive external audio gear at the proper levels.

A ribbon cable is included for connecting it to either the Stereo Out Jacks 1U module, or a compatible Intellijel case with 1/4" jacks (e.g. 7U x 104HP, 7U x 84HP, or Palette 62).
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 1 in stock $75.05
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Cat: 734878 Rel: 09 Jul 19
 
Quad precision VCO - 18HP
Notes: A-111-4 contains four precision VCOs and has individual controls, inputs and outputs for each VCO available as well as a common control and output unit. After all the A-111-4 is very similar to four A-111-3 without LFO mode but built in output mixers for the three waveforms, and a master unit for all four VCOs.

Controls, inputs and outputs for each of the four VCOs:

- 1V/Octave CV input
- Octave switch (+1 / 0 / -1 octave)
- Tune control (range internally adjustable by jumpers: ~ 2 semitones / ~ 1 octave / ~ 4 octaves)
- Modulation CV input
- Modulation destination: Upper position: exponential frequency modulation (XM) / Lower position: linear frequency modulation (LM) or pulsewidth modulation of the rectangle (PM), selectable via internal jumper
- Frequency Modulation (FM) or Pulsewidth Modulation of the rectangle (PWM)
- Modulation intensity
- Triangle output
- Sawtooth output
- Rectangle output (about 50% without external PWM)
- Sync input (hard or soft sync internally selectable via jumper, CEM3340 hard sync type)
- CEM3340 based VCO (triangle core)
- Each VCO has it's own separate internal +/- power supply for each for best stability and the prevention of unwanted synchronisation of the VCOs

Controls, inputs and outputs of the master section:

- 1V/Octave CV input
- Octave switch (+1 / 0 / -1 octave)
- Tune control (range internally adjustable by jumpers: 2 semitones / 1 octave / 4 octaves)
- Frequency Modulation CV input (FM)
- FM intensity
- Triangle sum output
- Sawtooth sum output
- Rectangle sum output
- As soon as the single waveform output of a VCO is patched this waveform of the VCO in question is removed from the sum (this function can be turned off for each single output socket by means of solder bridges on the pc board, i.e. the sum contains then all signals independent of the patching of the single output)
- CV output (outputs the sum CV that is used to control all four VCOs)
- Bus CV (via jumper, optional, please remove the bus jumper if this feature is not used to avoid unwanted frequency modulation as then the unused CV line of the bus works as a kind of antenna)

Typical applications:

- Fat sounding monophonic VCO with the possibility to adjust any intervals
- Paraphonic patches in combination with the polyphonic CV interface A-190-5 (all four VCOs processed by one VCF/VCA)
- Full polyphonic patches in combination with the polyphonic CV interface A-190-5 and four complete VCF/VCA sections
- Complex VCO patches with up to four VCOs by means of the frequency modulation features (exponential an linear) and the sync functions
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 3 in stock $369.21
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quote 734878
Cat: 732833 Rel: 25 Jun 19
 
stereo delay module
Notes: Erica Synths Black Stereo Delay is a hi-fi stereo delay with lot of unique features, based on our custom DSP engine. Developed in collaboration with Tim Pechersky aka TeemKaa of Useful Circuits. Tape, digital and ping-pong modes of delay, hold with overdub and delicate delay time and feedback control in combination with CV and trigger control over various parameters make this module not only great effects unit in your modular system, but also - an instrument on it's own.
Features:
" Stereo delay with adjustable delay time
" Tape, digital and ping-pong delay modes
" Tap and clock synchronization of delay time
" Reverse delay mode
" Hold mode (samples up to 20" of audio) with Add (overdub) feature
" Trigger control over Hold, Add and Reverse
" CV control over delay time, dry/wet mix and feedback
" Feedback path soft limiting compression
" Add to hold soft limiting compression
" Adjustable stereo delay spread
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 2 in stock $303.29
Cat: 739049 Rel: 19 Jul 19
 
Headphone amp capable of driving high impedance headphones via a 1/4" stereo Neutrik jack
Notes: Outs enables your modular system to output both professional and prosumer compliant audio, and send it to external amplifiers, mixers, recording devices, or DAW interfaces. Using the L+R Level knob, it scales modular-level voltages down to the level required to drive external gear at either the +4dBu balanced professional line-level standard or the -10 dbV unbalanced standard.

Headphone monitoring is also provided via a low noise built-in headphone amp (with its own independent level control), capable of driving a wide range of impedances - from studio grade headphones to portable style earbuds.

To use Outs, simply connect the final output of your patch to the 1/8" inputs (where the built-in activity LEDs light up to indicate the presence and intensity of the input signal). The left input is normalled to the right, so you can create a stereo signal from a mono source. Or if you have an Intellijel Mixup, you can remove a jumper from its rear panel, and connect it to the Outs module using the 3-pin link cable included with the Mixup.
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 1 in stock $150.11
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quote 739049
Cat: 577763 Rel: 10 Jul 19
 
8HP Eurorack module featuring two identical VCA's
Notes: Module A-132-3 is composed of two identical voltage controlled amplifiers (VCA). Each VCA has a manual gain control and a control voltage input with attenuator. The character of the control scale can be switched to linear or exponential. All inputs and outputs are DC coupled. Consequently, the VCA's can be used to process both audio and control voltages. The input has no attenuator available but is capable to process up to 16Vss signals (i.e. -8V...+8V) without distortion.
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 1 in stock $93.31
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Cat: 738620 Rel: 09 Jul 19
 
Voltage controlled envelope generator, vintage edition - 14HP
Notes: The A-141-2 module is an ADSR envelope generator with voltage controlled attack, decay, sustain and release parameters. Other features include LFO functionality as well as digital end-of-attack and end-of-release outputs. Besides positive and inverted outputs there is an output with voltage controlled amplitude available.

Attack, Decay, Sustain and Release parameters of the A-141-2 can be adjusted manually as well as via control voltages. The CV inputs come equipped with attenuators. In addition, a Comm-CV socket was implemented. Control voltages fed to this input influence all time parameters (A, D and R) simultaneously. Thus, it is possible to make high pitched notes shorter and more percussive. - Just like the behaviour of many acoustic instruments. The time range of the envelope goes from 50 microseconds to six seconds. Using a toggle switch, it is possible to increase these values by a factor of ten (500 us to 60 s) or a factor of hundred (5 ms to 10 min). To activate the envelope, there are gate and retrigger inputs.

The A-141-2 is equipped with a normal and an inverted output. Both connectors work with a fixed level. Furthermore, there is a third, variable output. Here, before reaching the out socket, the envelope signal is fed to a voltage controlled VCA. - Perfect for velocity CV signals. A jumper on the circuit board allows you to choose between a unipolar and a bipolar mode of operation. Other jumpers make it possible to normalize the CV inputs.

Last but not least, there are two digital outputs called EOA and EOR, which emit a gate signal after the attack respectively release phase. This is useful for delayed triggering of other envelopes. By connecting EOA or EOR output to the gate input, you can make the A-141-2 oscillate like a LFO. Adjustments to the envelope times change the frequency and waveform. If you connect the Attack CV input to the inverted output or the Decay respectively Release CV input to the normal output, you can alter the curve characteristics.
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 2 in stock $133.88
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quote 738620
Cat: 577767 Rel: 10 Jul 19
 
Voltage-controlled 24 dB low-pass filter - 8HP
Notes: Module A-120 is a voltage controlled low-pass filter, which filters out the higher parts of the sound spectrum, and lets lower frequencies pass through. The Cut-Off Frequency determines the point at which filtering takes effect. You can control this manually, or by voltage control (filter modulation, for instance by an LFO). Three CV inputs are available, and the sum of the voltages from these affects the filter cut-off.

The module is based on a so-called "transistor ladder" design, with a cut-off slope of -24 dB/octave, as in various Moog synthesizers. That's what gives it its classic, legendary Moog sound.

Resonance (or Emphasis) is adjustable all the way up to self-oscillation - in which case the filter behaves like a sine wave oscillator.
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 1 in stock $105.49
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quote 577767
Cat: 734880 Rel: 10 Jul 19
 
Envelope module with two ADSR voltage controlled enevelope generators - 8HP
Notes: The module contains two ADSR type voltage controlled envelope generators with exponential curve shapes (charge/discharge curves of a capacitor) behind a front panel with 8 HP only.

Each ADSR provides these controls and in/outputs:

- LED (displays the envelope output)
- A: manual Attack control
- D: manual Decay control
- S: manual Sustain control
- R: manual Release control
- Gate Input
- Retrigger Input
- CVT Input with attenuator (CVT = CV Time)
- Envelope Output 1
- Envelope Output 2

The output voltage range for each envelope is 0 - 10V (10V = attack peak).

The time range of Attack/Decay/Release is about 1ms to 30s.

By means of internal jumpers one can select which time parameters are controlled by the CVT input (e.g. D only or D+R or A+D+R) and in which direction (i.e. if an increasing CVT shortens or stretches the time parameter in question).

Socket CVT can be normalled to an internal fixed voltage (i.e. the switching contact is connected to an internal fixed voltage). That way it's possible to change all time parameters simultaneously by means of the CVT control.

Another jumper is used to set output 2 to normal or inverted envelope.

And another jumper is used for the normalling of Gate 2 to Gate 1 (i.e. ADSR#2 is also triggered by Gate 1).

Two more jumpers are used for the optional bus access to the gate signal of the bus for each ADSR.
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 4 in stock $150.11
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quote 734880
Cat: 732851 Rel: 22 Jul 19
 
Compact bucket brigade delay module - 3HP
Notes: Pico BBD is surprisingly great sounding (we were surprised ourselves), full analogue 4092 stage bucket brigade delay module; the smallest BBD in Eurorack. Besides nice and clean flanger and delay effects, at full CW settings of TIME and feedback knobs it can produce extreme sonic artefacts. Tweak knobs and enjoy!
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 4 in stock $128.31
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quote 732851
Cat: 741822 Rel: 05 Aug 19
 
Multi-mode CV generator - 4HP
Notes: Clep Diaz is a handy and small step CV and LFO generator. In step and random modes, use the encoder to control the number of steps in the sequence; in LFO mode, the encoder controls the amplitude of the wave. Toggle the directionality of the sequence: up, down, or up/down to customize the CVs further. CD also gives CV control over the number of steps in the sequence and an end-of-cycle trigger output. Unipolar and bipolar outputs allow maximal control.
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 1 in stock $119.68
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quote 741822
Cat: 736449 Rel: 15 Jul 19
 
Facilitates effects processing between eurorack, guitar pedals & electronic instruments
Notes: Want to connect outboard gear to your eurorack synthesizer without taking up valuable HP in your case? The INTRFX allows eurorack-level signals to be processed with pedals and/or outboard effects, and also allows line-level instruments to be processed with eurorack modules. Each of its three channels has an Interchange Switch to swap this mode, as well as an FX Blend parameter which can be controlled via CV. Because of its compact physical design, the INTRFX can be placed almost anywhere and connected to eurorack systems with 3.5mm patch cables rather than bulkier 1/4-in cables.

Feedback effects can be achieved by switching into the "wrong" mode, sending the FX return back into the FX send, while still allowing for dry signal blend and modulation. Channels can also be patched into one another and toggled between modes for experimental routing. Conveniently, each channel can operate as a reversed linear VCA for both audio and DC signals if no effects are used.

Whether you'd like to patch eurorack through some classic pedals or run a drum machine through your gnarliest modules, INTRFX makes these connections easy and flexible.
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 9 in stock $201.85
Cat: 700730 Rel: 03 Jul 19
 
Eurorack visual generator module
Notes: STRUCTURE is a visual generator module that is based internally on an OpenGL GLSL node based platform. It uses the concept of node structures to push visuals through the system.

STRUCTURE contains a video input system that you can select between two formats, Composite video or LZX 1V RGB (with sync applied to rear of module). The Composite input does full colour decoding. Input video can be mixed through effects, with other generators, effected with audio, etc. Input video can be NTSC or PAL, 480i. STRUCTURE auto detects and converts video inputs.

STRUCTURE contains two mirrored video outputs, both composite, selectable to NTSC or PAL 480i.

Two audio rate CV inputs can be used with audio nodes to generate audio based visuals, effects moved by audio waveform, XY plotting of audio inputs, or just used at low frequency CV inputs when not using audio nodes.

Three CV rate inputs can be used to modulate a variety of controls on each node.

All CV can be set independently to 1V or 5V expected input. Each CV has a scale control and a positive offset control for fine tuning incoming CV voltages.

A joystick can be used to modulate controls in real time, or used to record motion information that is played back in a loop. In addition, the joystick has a metal hat for nice weighted movement.

STRUCTURE can also generate 3D graphics, animate properties of the 3D objects, and allow you to map and node type to the texture of the 3D objects (like video).

Three gate inputs, usable by local buttons as well.

Three macro knobs on the top right, allow for global changes to the output node which are user configurable.

STRUCTURE has a USB input, which you can attach MIDI interfaces, MIDI keyboards, controllers, etc, or even a standard PC keyboard or numeric keypad. You can assign actions or state changes to trigger from any of these input sources.

SDCARD on front and back. Backside SDCARD stores system, front side stores user presets, images, configurations, objects, custom shaders, etc.

STRUCTURE has a full colour 320×240 preview screen which also provides lots of feedback when using.
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 5 in stock $841.89
Cat: 713618 Rel: 01 Jul 19
 
3-operator FM/phase distortion oscillator with thru-zero frequency modulation & external input
Notes: Complex digital oscillator with unison detune, programmable 3x4 modulation matrix mixer and external input. Intricate arrangements of phase distortion, thru-zero frequency modulation, and complex oscillation are instantly morphable and recallable through a voltage-controlled preset manager. Suitable for genre-targeted sequenced basslines, synthesis of stone, glass, and steel tones, and simulation of the acoustic properties of industrial machinery.

The Hertz Donut Mark III's main oscillator shapes its timbre by distorting the phase of a waveform lookup ramp, offering a linear growth of brass overtones from a simple sine wave whilst performing with exceptional clarity under heavy frequency modulation. The simulated resonance peak familiar to enthusiasts of phase distortion is also present and continuously controllable. The beloved "fractal" distortion from previous iterations of Hertz Donut is simultaneously available. The three waveform parameters operate in a modeless timbre space fully morphable under preset and shared manual/CV control, exhibiting stunning spectral evolutions that are intensified through the module's internal modulation bus. The fold knob is assignable to control one of the three parameters at a time, with the CV input also assignable to any of the three.

Two sinusoidal modulation operators are mixed to four modulation destinations with an external audio input. The operators may be locked to several precise frequency ratios of the main oscillator or set to be otherwise subordinate. The three sources may modulate each other's frequencies, or the amount of phase or fractal distortion. A plethora of control voltage inputs allow full control of the patch, reacting within a +/- 10V range. The first operator has a calibrated 1v/oct control voltage input and fine tune control, for use as an independent oscillator augmented by the modulation bus. The modulation mix is placed under the influence of a master control, so that a single knob and CV input control the degree of modulation in the entire module. Each sound that you design will have a unique and intense behaviour of this modulation control.

The preset manager stores 8 entire panel/menu states for instant recall under manual or voltage control. The control can also cause the creation of elegantly randomized preset data. The preset manager can be placed into a morphing mode where it assumes control of the various parameters, smoothly fading between entire panel states and generating very complicated sounds that are not easily described.

The unison de-tune function mixes in a nearly identical copy of the sound with slightly offset frequency, or optionally in octave or fifth intervals. The Hertz Donut operates at 96khz for a minimum of sampling by-products, able to consistently and competently generate ornate digital beauty and jagged swaths of sonic mayhem. The auxiliary output presents the output of one or both modulation operators, also with optional unison applied. The nearby mix output is an analogue sum of the Main and Aux outputs, facilitating parallel FM algorithm construction. 17 HP panel size. Perfect, genuine, complete, crystalline, pure.
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 1 in stock $423.99
Cat: 739126 Rel: 16 Jul 19
 
Expanded take on Mutable Instruments' famous Clouds granular texture synthesiser - black faceplate, 34HP
Notes: Clouds, the granular synthesis module from Mutable Instruments, was discontinued in 2017. Supercell brings back Clouds in a more accessible 34 hp form factor, offering an improved user interface and several additional features:

- Each of the Blend parameters (Feedback, Panning, Mix, and Space) have dedicated knobs with their own CV inputs and inverting attenuators (attenuverters).

- The inputs and outputs now have mute switches, stereo VCAs, and separate VU meters. The knobs act as offset controls when their respective VCA inputs are patched.

- A stereo output gain control has been added, providing an additional +6 dB of gain to compensate for low output levels when using certain parameter combinations.

- The complex process of changing the sampling time and managing presets has been simplified with dedicated switches and status LEDs.

- Extensive modulation options for all parameters including direct patching of external CV, distribution of one CV to all parameters via the AUX input, or an internal smooth random CV that is normalized to any unpatched inputs when AUX is also unpatched. The attenuverters control the modulation depth in all three cases. As of firmware v1.01 the internal modulation rate can be adjusted within a range of 1 to 100 Hz.

- The inputs and outputs now include stereo VCAs and separate VU meters. The knobs act as offset controls when their respective VCA inputs are patched.

- Pitch is now controlled by two separate inputs: the V/Oct input is exponential and the Pitch input is linear. When both inputs are used, their voltages are summed.

- A manual Trig switch (for capturing individual grains) has been added, in addition to the Trig input that was present on Clouds.

All other features of the original Clouds remain intact, including access to the alternate modes. Thanks to Olivier Gillet for making the original Clouds hardware and firmware available under open-source licenses. Third-party firmware such as Parasites (by Matthias Puech) and Beat Repeat (by Julius Kammerl) will be supported in future firmware updates after the initial release of the module.
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 4 in stock $455.43
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Cat: 739134 Rel: 16 Jul 19
 
Random looping sequencer - silver faceplate, 12HP
Notes: Permutation is a set of random sequencers that use a digital shift register to generate unpredictable CV and gate patterns that can be locked into repeating loops. The concept is based on the Turing Machine, an open source module designed by Tom Whitwell.

Permutation retains the core functionality of the Turing Machine while adding new features such as dedicated outputs for each bit of the shift register, CV inputs for all parameters, and an internal bipolar VCA. Locked sequences are also saved across power cycles.
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 2 in stock $217.06
Cat: 731220 Rel: 15 Jul 19
 
Expander for the Demon Core Oscillator - 8HP
Notes: This module brings polyphonic control to the Demon Core oscillator.

The stacks can be divided between up to 16 polyphonic voices via MIDI or four 1V/oct inputs with attenuator. The oscillator can be set in continuous streaming mode or in MIDI gating mode with an ADSR envelope for each polyphonic voice.

The time sync can be also triggered via MIDI for each voice.
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 3 in stock $241.40
Cat: 739060 Rel: 29 Jul 19
 
Dedicated jack expansion module for use with the Stereo Out 1U module
Notes: 1/4" TRS jack panel in 1U for the Stereo Line Out 1U module.

If you don't own an Intellijel case with built-in compatible 1/4" jacks, then you need to purchase a Stereo Out Jacks 1U module, which connects via ribbon cable to the Stereo Line Out 1U module to provide 1/4" TRS output jacks for interfacing with other studio or stage gear.
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 2 in stock $23.08
Cat: 743521 Rel: 01 Jan 90
 
***B-STOCK: Box opened, product unused***
Notes: Dual VCO:
Based on the classic SYSTEM-100M modular synthesizer, the SYSTEM-500 is a fully analog recreation of one of the most revered electronic instruments of all time. Newly designed in Eurorack format, the SYSTEM-500 delivers the classic character and functionality of the original with the advantages of a modern instrument. Built in the USA and assembled in Japan, the SYSTEM-500 is made to exacting standards with top-quality components and solid controls. And it's surprisingly affordable, turning the fantasy of finally owning this legendary instrument into reality.

Classic System. New Format:
The SYSTEM-500 consists of Eurorack format modules that you can mix and match in any combination to create the ultimate Roland modular synthesizer. Each module is completely analog and has been designed for maximum compatibility with the world of contemporary synthesizer and effects modules. The SYSTEM-500 is a compact, powerful system that opens up vast possibilities for sound design and musical exploration.

512 Dual VCO:
The 512 Dual VCO (voltage controlled oscillator) is a single module consisting of two voltage controlled oscillators. Each independent VCO produces frequencies across a wide range with 1V/octave tracking and dedicated pulse, triangle, and saw wave outputs. Variable pulse width is available via panel control or CV modulation. Each oscillator's frequency can also be synchronized to the other in weak or strong modes to achieve a unique "sync" sound.
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 1 in stock $303.29
Cat: 738636 Rel: 09 Jul 19
 
Simplistic quad LFO module with intuitive front panel - 14HP
Notes: Module A-143-3 is a low-cost four-fold modulation oscillator, often called LFO (low frequency oscillator). Like the other modules of the A-143 series (A-143-1 and A-143-2) not a very "exciting" module, just a bread-and-butter device and a simple demon for work. The module contains four simple LFOs. Each LFO is equipped with three waveform outputs: triangle, rectangle and rising sawtooth. The frequency of the sawtooth output is twice the frequency of the other outputs. A three-way switch is used to select one of three frequency ranges mid-low-high, spanning from about two cycles per minute at the lowest, to moderate audio frequency at the highest (about 5 kHz).

If other waveforms or additional LFO features are required (e.g. reset input, adjustable waveform, voltage controlled frequency) the LFO modules A-145, A-146 and A-147 are available.
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 1 in stock $113.60
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Cat: 738640 Rel: 09 Jul 19
 
Voltage controlled sine-LFO with four separate, phase shifted outputs - 8HP
Notes: Module A-143-9 is a derivative of our planned thru-zero quadrature VCO. It is a voltage controlled sine LFO with 4 outputs. The phase shift between the outputs is 90 degrees. The sine shifted by 90 degrees is also called cosine, the sine shifted by 180 degrees is nothing but the inverted sine, and the sine by 90 degrees is nothing but the inverted cosine.

The frequency range is from some minutes to frequencies beyond audio with three ranges selected by a toggle switch:

- Switch position H: about 30 Hz ... 3.5 kHz with the manual frequency control ("Frq."), beyond 20 kHz with additional external CV
- Switch position M: about 1 Hz ... 150 Hz with the manual frequency control ("Frq.")
- Switch position L: about 0,1 Hz ... 10 Hz with the manual frequency control ("Frq."), down to several minutes with additional external CV

Two exponential frequency control inputs are available: CV1 without attenuator and CV2 with polarizer. Consequently the module can be used even as an experimental sine VCO but does not feature an exact 1V/oct CV input! The precision CV input will be left to the thru-zero quadrature VCO.

Two LEDs display the positive and negative share of the sine output.

The core of the module is a so-called quadrature circuit that generates a sine a cosine signal with very low distortion. The quality of the sine/cosine signals are much better than those generated by a waveform converter with a sawtooth or triangle signal as starting point.

The output levels are about 5 Vss (+/-2.5V) but can be adjusted internally by a trimming potentiometer (P5 "Shape").

Typical applications:

- External sine/cosine oscillator for the frequency shifter A-126
- Modulations with pure sine/cosine waveforms
- Quadrature/barberpole effects (e.g. with the voltage controlled mixer A-135)
- Experimental sine/cosine VCO (e.g. for FM sounds)

Many users suggested to add a common output level control, i.e. four VCAs with one common control (manual + CV without attenuator + CV with polarizer) for the output levels. This is why we also designed the Quad VCA module A-132-2 with the possibility of an internal default connection to the four outputs of the A-143-9 (no soldering required, short 10 pin flat cable with removable connectors on both ends).

The A-143-9 is also a meaningful addition for the Frequency Shifter module A-126. It enables frequency shifting even below 50 Hz generating e.g. these mellow beat sounds with a few Hz frequency shifting only. The following document describes how to connect the A-126 and the A-143-9: A126_A143_connection.pdf.

The thru zero version of the A-143-9 with temperature compensation is the module A-110-4.
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 1 in stock $74.04
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quote 738640
Cat: 739048 Rel: 29 Jul 19
 
Eurorack power supply module - 4HP
Notes: Row Power is a clean, regulated, and protected power solution for eurorack systems. Row Power 35 provides 35W of power, suited for any typical eurorack row (84HP to 168HP):

+12V @ 1.4A
-12V @ 1.25A
+5V @ 1.0A

Simply plug a universal power supply (laptop style) into either of the barrel plugs on the 4HP panel. Connect your modules via flying-bus cables or the Bus Stick.

Daisy-chain multiple Row Powers to use a single power brick for multiple rows (typically 3-5 rows per power brick). Each row will be independently regulated and protected for ultra-low cross-talk between rows. Rows can also be hot-swapped (plugged/unplugged without powering the whole system down).
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 2 in stock $129.82
Cat: 738617 Rel: 10 Jul 19
 
Versatile module that can also be used as a modulation device - 8HP
Notes: Module A-140-1 is an envelope generator, and, since it puts out control voltages, counts as one of the modulation devices in a modular system. As soon as the gate input receives sufficient voltage, the ADSR generates a variable voltage, changing in time, called an envelope. This varying voltage is output in normal (positive) and inverted form, and can be used, eg. for voltage controlled modulation of a VCO, VCF, or VCA, or for processing other modules' inputs and outputs.

The shape of the envelope is governed by four parameters: Attack, Decay, Sustain and Release.

The envelope is started (triggered) by a gate signal either from the INT.GATE voltage on the system bus, or, if a signal is put into it, from the gate input socket.

The envelope can also be re-triggered, i.e. start from scratch again, each time a trigger signal is sensed at the Retrig. input socket, when the gate is still open.

Module A-140 has available a three-position toggle switch to select one of three time ranges. The time ratios for the three ranges are about 1 : 20 : 1000. The absolute Attack times are about:

20uS ... 100ms (switch position L)
400uS ... 2s (switch position M)
20ms ... 120s (switch position H)
The Decay and Release times are about 3-4 times more. Because of the exponential slope and the gradual asymptotic approach to the zero level the exact specification of the decay and real times is a bit difficult.

The voltage ranges of the ADSR outputs are about 0 ... +8V for the two normal outputs and 0 ... -8V for the inverted output.

In combination with the Comparator module A-167 a free-running "ADSR-LFO" can be realized.
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 1 in stock $77.04
Cat: 738621 Rel: 10 Jul 19
 
Voltage controlled envelope generator with decay parameter - 8HP
Notes: Module A-142-1 is a voltage controlled envelope generator. The only time parameter is decay (like TB303). Decay may be adjusted manually and via voltage control input (with attenuator). The envelope output is displayed with LED control. Additionally from the envelope signal a Gate signal and an inverse Gate signal with adjustable threshold is derived. LED control for Gate output. Thus one obtains a voltage controlled Gate additionally or alternatively to the envelope signal with voltage controlled duration.

The attack time is fixed to about 0.2 ms, the shortest decay time is about 2 ms. By changing the value of a capacitor the shortest time can be modified (details can be found here: A100_Capacitors.htm).

Typical applications: dynamic control of decay e.g. in combination with the Analog/Trigger Sequencer A-155, voltage controlled trigger delay functions (like A-162, but voltage controlled).
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 1 in stock $75.05
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quote 738621
Cat: 738619 Rel: 09 Jul 19
 
Voltage controlled envelope generator, standard edition - 14HP
Notes: The A-141-2 module is an ADSR envelope generator with voltage controlled attack, decay, sustain and release parameters. Other features include LFO functionality as well as digital end-of-attack and end-of-release outputs. Besides positive and inverted outputs there is an output with voltage controlled amplitude available.

Attack, Decay, Sustain and Release parameters of the A-141-2 can be adjusted manually as well as via control voltages. The CV inputs come equipped with attenuators. In addition, a Comm-CV socket was implemented. Control voltages fed to this input influence all time parameters (A, D and R) simultaneously. Thus, it is possible to make high pitched notes shorter and more percussive. - Just like the behaviour of many acoustic instruments. The time range of the envelope goes from 50 microseconds to six seconds. Using a toggle switch, it is possible to increase these values by a factor of ten (500 us to 60 s) or a factor of hundred (5 ms to 10 min). To activate the envelope, there are gate and retrigger inputs.

The A-141-2 is equipped with a normal and an inverted output. Both connectors work with a fixed level. Furthermore, there is a third, variable output. Here, before reaching the out socket, the envelope signal is fed to a voltage controlled VCA. - Perfect for velocity CV signals. A jumper on the circuit board allows you to choose between a unipolar and a bipolar mode of operation. Other jumpers make it possible to normalize the CV inputs.

Last but not least, there are two digital outputs called EOA and EOR, which emit a gate signal after the attack respectively release phase. This is useful for delayed triggering of other envelopes. By connecting EOA or EOR output to the gate input, you can make the A-141-2 oscillate like a LFO. Adjustments to the envelope times change the frequency and waveform. If you connect the Attack CV input to the inverted output or the Decay respectively Release CV input to the normal output, you can alter the curve characteristics.
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 1 in stock $135.91
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quote 738619
Cat: 738648 Rel: 10 Jul 19
 
Multi-function module with LFO, switchable VCA, & VC delay - 8HP
Notes: Module A-147-2 is the successor of the VCLFO A-147 but offers much more features than the predecessor. The module is made of these sub-units:

- VCLFO: voltage controlled low frequency oscillator
- VCA: voltage controlled amplifier, switchable to voltage controlled polarizer
- VC delay unit: voltage controlled linear attack envelope (only one parameter: attack) for delayed LFO operation in combination with the VCA (e.g. delayed vibrato/tremolo)

LFO: The voltage controlled LFO has the waveforms Triangle, Sine, Sawtooth and Rectangle available and features a Reset/Sync input. Triangle/Sine and Rectangle are displayed by means of dual-colour LEDs (probably red/green), Sawtooth has a unicolor LED available (probably blue). The output levels are about -4V...+4V for Triangle, Sine and Rectangle. The Sawtooth level is about 0...+8V. The CV control can be switched to attenuator or polarizer ("CV Mode" switch). In polarizer mode the CV inputs affects the frequency in the reverse manner when the CV control is left from the centre position. In the centre position CV has no effect and right from the centre the control works like a normal attenuator. The frequency range (without external CV) is from about 0,005 Hz (i.e. about 3 minutes per period) to 200 Hz (with external CV max. frequency about 1kHz). In addition a ultra-low mode can be activated by means of an internal jumper. When the ultra-low jumper is set a fixed voltage is connected to the switching contact of the "LFO CV" socket. In polarizer mode of the CV control that way extremely low frequencies (up to one hour period and more) are possible. For this a jumper has to be installed on the pin header JP6. In the factory a dummy jumper is installed on the pin header JP7 "Dummy". JP7 has no function and is used only for "parking" of the jumper. Simply remove the jumper from JP7 and plug it on JP6. JP6 is located behind the CV control.

VCA: This is a linear VCA that can be switched to "normal" VCA (i.e. kind of a voltage controlled attenuator) or voltage controlled polarizer ("VCA Mode" switch). In the "normal" VCA mode amplification +1 is achieved with about +5V control voltage. In polarizer mode the amplification ranges from about -0.5 (i.e. inverted signal with about 50% level) with 0V CV to +0.5 (i.e. non-inverted signal with about 50% level) with +5V CV. With about +2.5V CV the signal is suppressed. Details about the functioning of a voltage controlled polarizer can be found in the description of the module A-133. In this mode the VCA can be treated also a DC coupled ring modulator (similar to A-114).

The VCA of the A-147-2 has three sockets available: "In" (signal input), "Out" (signal output) and "CV" (control voltage input).

The Triangle Output of the LFO is normalled to the VCA signal input by means of the switching contact of the "VCA In" socket. If another LFO waveform (or any other signal) should be processed by the VCA the corresponding signal has to be patched to the "VCA In" socket. The VCA can be used also independently from the LFO and the Delay CV. In this case the VCA sockets In, Out and CV have to be patched accordingly. The VCA can be used also as waveshaper for the LFO signals (e.g. by patching VCA In and VCA CV to different LFO signals, if necessary via attenuator A-183-1 or offset generator/attenuator A-183-2).

Attack/Delay: The third sub-unit of the module is a simple, voltage controlled envelope generator that has only the parameter "Delay" (or Attack) available. This unit generates a linear increasing voltage that starts from 0V after each Delay Reset until it reaches about +5V. Then the voltage remains at +5V until the next Delay Reset occurs. The inclination or gradient is controlled by the manual Delay control and the Delay control voltage ("Delay CV" input). The waveform is linear, the control scale is exponential. The output voltage is displayed by a green LED and available at the "Delay Out" socket.
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 1 in stock $114.61
Cat: 738649 Rel: 10 Jul 19
 
Multi-function module with LFO, switchable VCA, & VC delay - 8HP
Notes: Module A-147-2 is the successor of the VCLFO A-147 but offers much more features than the predecessor. The module is made of these sub-units:

- VCLFO: voltage controlled low frequency oscillator
- VCA: voltage controlled amplifier, switchable to voltage controlled polarizer
- VC delay unit: voltage controlled linear attack envelope (only one parameter: attack) for delayed LFO operation in combination with the VCA (e.g. delayed vibrato/tremolo)

LFO: The voltage controlled LFO has the waveforms Triangle, Sine, Sawtooth and Rectangle available and features a Reset/Sync input. Triangle/Sine and Rectangle are displayed by means of dual-colour LEDs (probably red/green), Sawtooth has a unicolor LED available (probably blue). The output levels are about -4V...+4V for Triangle, Sine and Rectangle. The Sawtooth level is about 0...+8V. The CV control can be switched to attenuator or polarizer ("CV Mode" switch). In polarizer mode the CV inputs affects the frequency in the reverse manner when the CV control is left from the centre position. In the centre position CV has no effect and right from the centre the control works like a normal attenuator. The frequency range (without external CV) is from about 0,005 Hz (i.e. about 3 minutes per period) to 200 Hz (with external CV max. frequency about 1kHz). In addition a ultra-low mode can be activated by means of an internal jumper. When the ultra-low jumper is set a fixed voltage is connected to the switching contact of the "LFO CV" socket. In polarizer mode of the CV control that way extremely low frequencies (up to one hour period and more) are possible. For this a jumper has to be installed on the pin header JP6. In the factory a dummy jumper is installed on the pin header JP7 "Dummy". JP7 has no function and is used only for "parking" of the jumper. Simply remove the jumper from JP7 and plug it on JP6. JP6 is located behind the CV control.

VCA: This is a linear VCA that can be switched to "normal" VCA (i.e. kind of a voltage controlled attenuator) or voltage controlled polarizer ("VCA Mode" switch). In the "normal" VCA mode amplification +1 is achieved with about +5V control voltage. In polarizer mode the amplification ranges from about -0.5 (i.e. inverted signal with about 50% level) with 0V CV to +0.5 (i.e. non-inverted signal with about 50% level) with +5V CV. With about +2.5V CV the signal is suppressed. Details about the functioning of a voltage controlled polarizer can be found in the description of the module A-133. In this mode the VCA can be treated also a DC coupled ring modulator (similar to A-114).

The VCA of the A-147-2 has three sockets available: "In" (signal input), "Out" (signal output) and "CV" (control voltage input).

The Triangle Output of the LFO is normalled to the VCA signal input by means of the switching contact of the "VCA In" socket. If another LFO waveform (or any other signal) should be processed by the VCA the corresponding signal has to be patched to the "VCA In" socket. The VCA can be used also independently from the LFO and the Delay CV. In this case the VCA sockets In, Out and CV have to be patched accordingly. The VCA can be used also as waveshaper for the LFO signals (e.g. by patching VCA In and VCA CV to different LFO signals, if necessary via attenuator A-183-1 or offset generator/attenuator A-183-2).

Attack/Delay: The third sub-unit of the module is a simple, voltage controlled envelope generator that has only the parameter "Delay" (or Attack) available. This unit generates a linear increasing voltage that starts from 0V after each Delay Reset until it reaches about +5V. Then the voltage remains at +5V until the next Delay Reset occurs. The inclination or gradient is controlled by the manual Delay control and the Delay control voltage ("Delay CV" input). The waveform is linear, the control scale is exponential. The output voltage is displayed by a green LED and available at the "Delay Out" socket.
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 1 in stock $120.70
Cat: 738613 Rel: 09 Jul 19
 
Quad voltage-controlled mixer with 4 individual VCA's - 18HP
Notes: Module A-135-1 is a quad voltage controlled mixer. It is made of 4 independent linear VCA's. The VCA outputs are mixed to a common output. For each VCA the following inputs and controls are available: audio input with attenuator, control voltage input with attenuator, gain (pre-amplification). The VCA's are realized with high-quality CEM VCA's (CEM3381 for version 1 and SSM2164 for version 2).

Applications: voltage controlled mixing of up to 4 audio signals with separate control voltages (e.g. delivered by LFO's, ADSR's, Random, Shepard generator, MIDI-to-CV interface or other control voltage sources). In connection with the Morphing-Controller A-144 the soft fade-over of 4 audio signals with only one control voltage is possible.

Inputs: 4 x Signal in, 4 x CV In
Output: Signal Out, Version 2 in addition: 4 x Single Out
Controls: 4 x Signal In Attenuator, 4 x CV Attenuator, 4 x Initial Gain
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 1 in stock $131.85
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quote 738613
Cat: 738616 Rel: 10 Jul 19
 
Stereo headphone amplifier - 6HP
Notes: The A-139-2 is a headphone amplifier module with two mono inputs and a stereo headphone output. It can be used for driving small loudspeakers, LED strips, small magnets etc.

- Two-channel headphone amplifier
- Two audio inputs with level controls
- Input 1 is normalled to Input 2
- Common loudness/master level control
- Headphone output (stereo 1/4" jack socket)
- Max. output power ~ 2 W per channel (@ 8 Ohm load)
- DC coupled inputs and outputs (i.e. also useful for other applications like small loudspeakers, lamps, LEDs, magnets, motors - provided that the power is sufficient)
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 1 in stock $50.71
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quote 738616
Cat: 738645 Rel: 10 Jul 19
 
Low frequency oscillator with adjustable waveform - 8HP
Notes: Module A-146 (LFO 2) is a Low Frequency Oscillator, which produces periodic control voltages over a wide range of frequencies.

The LFO can be used as a modulation source for a series of modules (for instance pulse width and/or frequency modulation of a VCO, modulation of a VCF cut-off frequency, amplitude modulation with a VCA).

Three outputs are available, with different waveforms: sawtooth / triangle; square wave, and positive-voltage square wave.

The waveform is continuously adjustable from rising sawtooth, through triangle to falling sawtooth. The same control affects the pulse width of the square wave.

A three-way switch can select one of three frequency ranges, spanning from one cycle every few minutes, at the lowest, up to audio frequency at the highest.
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 1 in stock $66.94
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quote 738645
Cat: 738639 Rel: 09 Jul 19
 
Four voltage controlled LFO's/ VCO's with triangle & rectangle outputs in one single module - 22HP
Notes: Module A-143-4 is a fourfold voltage controlled low frequency oscillator (LFO). As the frequency range includes moderate audio frequencies it can be used as a four-fold VCO too.

- Four independent VCLFOs/VCOs with triangle core
- Frequency range switches: low (bottom position) = LFO mode, high (top position) = VCO mode
- Two frequency control CV inputs for each unit
- CV1 without attenuator (~ 1V/oct)
- CV2 with attenuator
- Manual frequency control
- Internal jumpers for the frequency range of the manual frequency controls:
- Jumper not installed: ~ +/- 1 octave range (mainly for VCO applications)
- Jumper installed: ~ +/- 5 octaves range (mainly for VCLFO applications)
- Sync inputs: Combined Reset/Direction inputs for unit #1 - #3 / Separate Reset and Direction inputs for unit #4 (normalled sockets, i.e. Reset is connected to Direction if the Direction socket is unused) / Up/both/down direction switch for unit #4, for technical details concerning the Reset and Direction function please refer to the sketch below
- Triangle and rectangle outputs for each unit
- Typ. output voltage range -5V ... +5V for both outputs (i.e. about 10 Vpp, symmetrical with reference to 0 V)
- Red/yellow LED displays for the triangle outputs (red = negative output voltage, yellow = positive output voltage)
- Common control section with two CV inputs and manual control (these inputs and controls affect the frequency of all four units)
- Sum outputs for triangle and rectangle with red/yellow LED displays
- Optional ultra-low frequency mode: for this a negative voltage can be applied via a jumper internally to the CV2 input of each unit and the common section (i.e. a negative voltage is normalled to the socket CV2 in question). Then the CV2 - - Attenuator control works as a negative frequency control (i.e. turning up this control lowers the frequency). Herewith LFO periods up to about one hour (or even more) are possible.
- Optional CV bus access via jumper (i.e. the module can pick up the CV from the A-100 bus, e.g. generated by a Midi/CV or USB/CV interface A-190-x or a bus access module A-185-1/2), if the jumper is installed the bus CV affects all four units as the bus CV is added to the CV generated by the common control section
- Typ. frequency range: < 0.001 Hz (~ one hour, LFO mode with ultra-low option) ... 15 kHz (VCO mode with installed frequency range jumpers for the manual frequency controls)
- Heat-up time: ~ 15 minutes (required to heat-up the main circuit by the affixed oven)

The module was planned mainly as a quad VCLFO. But we added a range switch (nothing but a switch for two different capacitors) so that even audio frequencies are possible and the module can be used as VCO with some restrictions too. Because of the closeness of the main circuitry (i.e. four VCO cores within less ~ 1 square millimetre) the oscillators may lock if the frequencies are very close to each other and the VCO frequencies interact marginally. If a high quality quad VCO is required the A-111-4 is recommended as this module has four separate VCO circuits available.

The reset circuitry is optimized for the LFO mode. As it takes some time to discharge the oscillator capacitor the discharge time had to be chosen so that the capacitor is fully discharged in LFO mode. In the high range (where a much smaller capacitor is used) this will cause a zero state duration in the 0.3 ms range if the oscillator is synced (during this time the capacitor is shortened for discharge).
The control scale of the inputs "CV1" is about 1V/octave. To improve the behaviour in the VCO mode a tempco circuit is used to keep the temperature of the exponential converter at a fixed temperature (similar to the tempco option of the DIY SYNTH). That way the frequency of the VCOs (and even the VCLFOs) is nearly independent from the environment temperature. But the accuracy (1V/octave scale and temperature compensation) is not as precise as for the dedicated VCOs A-110 and A-111-1.
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 1 in stock $196.77
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quote 738639
Cat: 738632 Rel: 09 Jul 19
 
Quad Decay featuring four simple envelope generators - 8HP
Notes: Module A-142-4 contains four simple envelope generators. The only time parameter is Decay and can be adjusted manually by means of the Dec. control in the range 2 ms ... 2 seconds. The attack time can be adjusted internally by means of a separate trimming potentiometer for each sub-unit in the range 1 ms ... 15 ms. The factory setting is about 3 ms. This is the attack time of the TB303. Each envelope output has a LED control available. The trigger inputs are normalled (1 -> 2 -> 3 -> 4).

Suggestions for modifications:

Each sub-unit has a pin header with two pins available. When the two pins are shortened (e.g. by means of a jumper or a toggle switch connected to the two pins) the corresponding sub-unit changes to a loop mode. In this mode the unit is triggered by itself like an LFO..

By changing the value of a capacitor the time range can be modified (e.g. 0.2 ms ... 0.2 seconds or 20 ms ... 20 seconds)
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 1 in stock $90.27
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quote 738632
Cat: 738641 Rel: 10 Jul 19
 
Compact module for modulating four parameters from a single CV signal - 8HP
Notes: Module A-144 is a control voltage modifier that is used in combination with the voltage controlled mixer A-135 in the first place. From a linear increasing voltage at the input the module derives four displaced triangle output voltages. When these 4 outputs are connected to the four control voltage inputs of the A-135 one obtains a fading over of the four A-135 audio inputs ("morphing"). The Morphing can be controlled manual and modulated with an external control voltage (e.g. from LFO, ADSR, Random, MIDI-to-CV, Theremin, Light-to-CV, analogue sequencer) with attenuator.

Applications: voltage controlled morphing of 4 audio signals in combination with A-135, e.g. morphing between the 4 waveform outputs of an VCA (sawtooth/ rectangle/ triangle/ sine) or the 4 filter outputs of the multimode filter A-121 (lowpass/ bandpass/ highpass/ notch) or the 4 filter outputs of the A-105 (6/12/18/24dB) to obtain a filter with voltage controlled slope.

When an audio source (e.g. sawtooth, triangle or sine of a VCO) is used as CV input signal the module can be used also as Waveshaper. The four A-144 outputs can be mixed e.g. by means of a Polarizing Mixer A-138c with adjustable level and polarity.

- Inputs: CV In
- Outputs: CV Out 1, 2, 3, 4
- Controls: Manual Morphing, CV attenuator
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 1 in stock $65.92
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quote 738641
Cat: 742581 Rel: 09 Jul 19
 
B-STOCK: Box opened, product in perfect working order
Notes: ***B-STOCK: Box opened, product in perfect working order***


Module A-135-1 is a quad voltage controlled mixer. It is made of 4 independent linear VCA's. The VCA outputs are mixed to a common output. For each VCA the following inputs and controls are available: audio input with attenuator, control voltage input with attenuator, gain (pre-amplification). The VCA's are realized with high-quality CEM VCA's (CEM3381 for version 1 and SSM2164 for version 2).

Applications: voltage controlled mixing of up to 4 audio signals with separate control voltages (e.g. delivered by LFO's, ADSR's, Random, Shepard generator, MIDI-to-CV interface or other control voltage sources). In connection with the Morphing-Controller A-144 the soft fade-over of 4 audio signals with only one control voltage is possible.

Inputs: 4 x Signal in, 4 x CV In
Output: Signal Out, Version 2 in addition: 4 x Single Out
Controls: 4 x Signal In Attenuator, 4 x CV Attenuator, 4 x Initial Gain
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 1 in stock $123.55
Cat: 738634 Rel: 09 Jul 19
 
Quad AD-generator with four independent Attack-Decay envelopes - 28HP
Notes: Module A-143-1 is a complex envelope generator that consists of Attack/Decay generators. For the complex envelope generator the four units are daisy-chained, i.e. the preceding unit triggers the following unit. The four units can be used even as four separate AD generators (switch position AD) or AD-type LFOs (switch position).

Details: Module A-143-1 contains four separate attack/decay type envelope generators. Each unit can be switched into a free running mode (LFO mode). The LFO mode differs in several points from a regular LFO (like A-145, A-146 or A-147): The slopes are exponential - in contrast to linear slopes of a normal LFO, and the frequency is defined by both controls. The attack control defines the time of the rising slope, the decay control the falling slope.

Each unit has available a comparator that compares the AD output voltage with a manually adjustable threshold and switches the corresponding comparator output (Cp 1...4) to "high" as soon as the AD output voltage goes in the decay phase below this value. The comparator output is normalled to the trigger input of the next stage via the switching contact of the trigger input socket. Consequently the first unit triggers the second, the second triggers the third and so on.

Each AD generator is equipped with a Polarizer (look at the Voltage Controlled Polarizer A-133 concerning details about the polarizer function) and a mixer that adds up all polarizer outputs. This allows to add up all AD/LFO output signals inverting or non-inverting with adjustable level to the mix output. Additionally a single output (Env 1...4) is available for each unit.

If the trigger input of unit 1 is controlled by a normal gate signal (e.g. from a keyboard resp. MIDI-to-CV/Gate interface) one obtains a very complex envelope signal at the mix output. The signal contains 8 segments controlled by Attack 1, Decay 1, Attack 2, Decay 2, Attack 3, Decay 3, Attack 4 and Decay 4. The transition between the stages (i.e. when the following AD generator is triggered) is controlled by threshold knob. The positive or negative contribution of each unit to the mix signal is adjusted with the Mixing Polarizer control. If the trigger input of unit 1 is controlled by the comparator output of unit 4 one obtains a 8 stage LFO.

The single AD outputs can be used to control VCAs or VCFs that open one after another corresponding to the AD signals (a little bit similar to the Shepard generator A-191).

The default-connection between the four units (CPn = Trig.n+1) can be interrupted by patching cables into the trigger inputs. Consequently the four units can be used as separate AD generators or LFOs. In any case the mix signal is available (e.g. mix of four AD generators or LFOs with adjustable level and sign).

In the LFO mode the comparator output serves as LFO rectangle output with adjustable pulse width (= threshold control).

Each unit is equipped with a separate LED display for envelop and comparator output. The shortest attack/decay time is about 5 ms, the longest attack/decay times are about 3 seconds (attack) / 10 seconds (decay). By changing the value of a capacitor the shortest time can be modified (details can be found here: A100_Capacitors.htm).

The sketch at the bottom of the page shows the module principle with 4 daisy-chained AD units (as predetermined by the normalled sockets), that are mixed with the integrated polarizing mixer.
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 1 in stock $166.34
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quote 738634
Cat: 577791 Rel: 10 Jul 19
 
VCA with exponential response for low level sensitivity - 8HP
Notes: Module A-131 provides voltage-controlled amplification. For audio signals, you would normally use the exponential VCA (A-131), and for control voltages, the linear VCA (A-130). It doesn't always have to be that way, though.

The amount of amplification the VCA's provide is determined by the voltage at the CV input, and the position of the gain control, which sets the overall gain in the system.

The VCA has two audio inputs, each with an attenuator. They are amplified by an amount determined by the combination of the gain and the two CV controls.
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 1 in stock $69.98
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quote 577791
Cat: 738521 Rel: 22 Jul 19
 
4HP PSU connection module
Notes: If you decide to use rack ears to mount Erica Synths 84HP enclosure in the studio rack, you may want to access the PSU connection from the front of the case, instead of the top. The 4HP PSU connection module is the solution. PSU Input module is intended to be used with external PSUs which provide an output voltage from +9V to +12V ("+" in the centre).

For two row Eurorack enclosures (2x84HP), use a small screwdriver to disconnect the existing PSU connector from the blue terminal and connect the PSU connector module as shown on the photo.

For one row Eurorack enclosures (1x84HP), you will need a soldering iron to solder wires from the PSU connector module as shown on the photo. Make sure soldered wires do not touch the aluminium enclosure!
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 2 in stock $18.77
Cat: 732845 Rel: 22 Jul 19
 
Simple 2-4 step sequencer - 3HP
Notes: Pico SEQ2 is a straight-forward, full analogue 4 step sequencer/waveshaper with adjustable sequence length. If you want to have a simple, compact stepped modulation source in your setup, then this is it! Particularly interesting use of the Pico SEQ2 is waveshaping - just apply any audio source to the CLK IN, tweak the knobs and be amazed!
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 1 in stock $88.24
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quote 732845
Cat: 743783 Rel: 26 Jun 19
 
B-STOCK: Box opened, product in perfect working order
Notes: ***B-STOCK: Box opened, product in perfect working order***


Viol Ruina is an all-analogue distortion and lowpass filter with an internal envelope follower and self-modulating cutoff. The four-pole design is reminiscent of the classic filters we all know but with a completely new and slightly ridiculous twist. The independently addressable distortion circuit takes VR into overdriven paradise with a shocking amount of drive. Built-in envelope following makes an easy way to create dynamic patches with the flick of a switch, and feedback FM takes VR to a whole new realm of filthiness. Run a sound through VR, you'll get something cool out of it.
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 1 in stock $126.80
Cat: 732846 Rel: 22 Jul 19
 
White noise generator - 3HP
Notes: Erica Pico Noise is a versatile noise and percussion sounds source. It consists of white a noise generator, a resonant VCF to generate various colours of the noise - from extremely dark ones to high pitched resonant sweeps and a VCA/decay envelope generator combination to create range of percussion sounds to emulate hi-hats, cymbals and even sine tone-based percussion, when the resonance is full up.
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 3 in stock $128.81
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Cat: 732847 Rel: 22 Jul 19
 
LFO + highly stable S&H in one module
Notes: Erica Pico LFO/S&H is a full analogue modulations source - LFO and Sample and Hold - to provide some controlled randomness to your modular setup.
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 4 in stock $91.28
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Cat: 741570 Rel: 29 Jul 19
 
Dynamic rhythm generator module
Notes: Integra Funkitus takes up to four input rhythms and combines and modifies them into rhythm outputs. There are three modes: two based on probability and one on generalized logic combinations.

Feed up to four rhythms from a rhythm module (such as Numeric Repetitor) into the inputs.

Connect the gate outputs to percussion modules, then turn the knobs to control how the rhythms are combined and modified.

Size: 8HP Eurorack
Depth: 1 Inch
Power: 2x5 Eurorack
Draw +12V: 50 mA
Draw -12: 5 mA
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 4 in stock $226.19
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Cat: 741821 Rel: 05 Aug 19
 
Compact gate sequencer with eight steps - 4HP
Notes: Bin Seq is an eight-step switchable gate sequencer. Besides individual signals, it is also possible to notate tied events. In addition to clock and reset inputs, there are manual control options for both functions. A great utility module, which can not only be used to create simple beats, but to manipulate other sequencers or trigger modulators rhythmically as well.
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 1 in stock $119.68
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Cat: 734840 Rel: 15 Jul 19
 
Analogue VCO focused on all aspects of modulation - 12HP
Notes: The OSC1 from Future Sound Systems presents a voltage-controlled analogue oscillator with a few features unexpected of a basic oscillator, with a particular focus on covering all bases of signal modulation. Once triangle, sinusoidal and pulse waveforms are derived from its sawtooth core, each waveform is passed through a VCA. The outputs from these VCAs are then summed at the Mix output, which can be switched between 2- and 4-quadrant-multiplication modes. These two QM modes allow for a plethora of amplitude modulation effects to be achieved. Level controls for each waveform dictate both static level, but also depth of modulation through careful design of the control summation. Each individual waveform output is taken pre-VCA for maximum patching flexibility.

Shape modulation of the triangular, sinusoidal and pulse waveforms is also available. Both the triangular and sinusoidal waveshapes can be skewed forward or backward into ramp-like shapes, whilst shaping the pulse wave gives standard pulsewidth modulation.

Frequency modulation is available in both Linear and Exponential modes. The OSC1 also tracks to 1V/Octave over four octaves in its audible (HF) range, but can also be used as a low frequency oscillator in LF mode.

A Sync input allows for the OSC1 to be reset by an external signal. A rising edge will reset the sawtooth wave to its peak, from which it descends. The Inject input, meanwhile, allows for external signals to interfere with the sawtooth core. This allows for intermodulation-type effects to be produced, and opens new realms of chaotic oscillations.
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 3 in stock $241.40
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