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Notes: Module A-124 is a special 12dB multimode filter using the "strange" filter circuit of the "EDP Wasp" (an analog synthesizer with black/yellow case built end of the seventies, manufactured by the UK company "Electronic Dream Plant" with Chris Huggett und Adrian Wagner). This design "abuses" digital inverters as analog operational amplifiers leading to distortions and other "dirty" effects that generate the specific sound of this filter. The filter is equipped with a band pass output and a combined low/notch/high pass output. For this output a control knob defines the relation between low and high pass signal. If both signals appear at the same level (i.e. middle position of the Mix knob) one obtains a notch filter. Otherwise the low or high pass signal predominates. The module does not feature self-oscillation in contrast to most of the other filters of the A-100 system.

Inputs: Audio In, CV In (2x)
Outputs: Bandpass Out, Low/Highpass Mix-Out
Controls: Audio and CV attenuator, Frequency, Resonance, LP/HP Mix

The function and operation of this module is very similar to the module SEM VCF A-106-5. But the sound of both filters is very different! The only functional difference is the position of the sockets and controls, and the function of the controls CV2 (A-124: normal attenuator, A-106-5: polarizer).

- 3U Eurorack module, 8HP wide, 45mm deep
- Current draw 30mA

Notes: Dual 1 x 3 buffered mult (one audio or cv signal in with multiple buffered outputs).

The output of the first mult is normalled to the input of the second mult to create a 1×6 buffered mult

Notes: The Rene music synthesizer module is a powerful three-dimensional prism of composition. It is the world's only 3D Cartesian Music Sequencer. Named for the French philosopher & mathematician Rene Descartes, it uses the Cartesian coordinate system to unlock the analogue step sequencer from the shackles of linearity. The original Rene was a one-channel, two-dimensional Cartesian sequencer with limited memory, this new Rene is a three-channel, three-dimensional Cartesian sequencer with memory for up to 64 complete States. Considering the multiple channels and FUN programming options per multiple axis, Rene has become an n-dimensional matrix or tesseract of synthesizer sequencing.

Notes: The WoggleBug music synthesizer module is a random voltage generator, originally designed by Grant Richter of Wiard Synthesizers. It is a continuation of the "smooth" and "stepped" fluctuating random voltage sources pioneered by Don Buchla within the Model 265 "Source of Uncertainty," expanding it to include the other-worldly Woggle CVs (stepped voltages with decaying sinusoids edges). The Wogglebug is a very musical random voltage generator where it is possible to synchronize all random signal to a Master Clock. Guaranteed to unleash your synthesizer's ID MONSTER!

Features:
Complete Complex Random Voltage system, no external modules necessary
Two VCOs, Phase Lock Loop, Lag Processor, Clock, Burst Generator and Sample & Hold
Generates 7 Random Signals simultaneously: Smooth VCO, Woggle VCO, Ring Mod, Stepped, Smooth, Woggle, Burst
Generates voltage controlled Master Clock
External inputs for S&H (Heart IN) and Ring-Mod (Influence)
Disturb button adds performance element
Wonderful for modulating the Morphagene and DPO

Specifications:
Width: 10hp
Max Depth (incl. power cable): 32mm
Power: 50mA@ +12V; 40mA @ -12V

Notes: 'Tangle Quartet' is a high quality quad linear voltage controlled amplifier (VCA) providing individual level control of 4 signal inputs with both individual outputs and a combined 'mix' output (for non patched outputs) . Control signal inputs and associated attenuation controls allow for voltage control of signal levels. Control inputs are normalised to 5v thus providing manual mix control in the absence of control signals.

Technical Specifications:

Supply: +/-12V (Reverse voltage protection)
Current Draw: ~80ma
Size: 8 HP
Depth: 32mm (including power header)

Notes: The Quad VCA is a compact and feature packed module that is sure to find its way it almost all of your patches. In addition to being used for standard VCA duties it can also be used as a mixer and signal booster.

Features:

- Manual LEVEL control per VCA which is convenient when using the module as a mixer or for biasing when CV modulating the VCA with a bipolar LFO.
- Dedicated CV attenuators with dual colour LEDs for monitoring bipolar CV signals.
- Continuously adjustable response from linear to exponential per VCA.
- Each CV input is normalled to the adjacent one for cascaded control.
- Each output is normalled to the mix input of the adjacent one which allows you to use adjacent sets as submixes or the fourth output can be used as a master mix output when none of the other outputs are patched.
- Each VCA has a boost switch that increases the output level by approximately +6dB (double).

Notes: Module A-119 (External Input / Envelope Follower) is designed to allow external audio signals to be integrated into the System A-100. It comprises a pre-amp, envelope follower, and comparator.

The pre-amp has two inputs: an unbalanced input for line level signals, with a gain factor of from 0 to 20, and a balanced input with a gain factor of from 0 to 500, for insertion of low level signals, for instance from a microphone or electric guitar.

The Envelope Follower reads the signal level of the input, and puts out a proportional voltage as an envelope at its own output.

The comparator generates a gate signal whenever the input goes above an adjustable trigger threshold.

Three LED's help you keep track of overload, the envelope, and the gate signal.

Notes: 'O/A/x2' is a dual channel attenuverter with each channel also including a bipolar voltage offset and LED monitoring. The module is primarily intended for fine grain flexible 'editing' of control signals (i.e changing the phase, level and DC offset of an LFO signal) but also has uses with audio signals such as attenuation, inversion and mixing.

Technical Specifications:

Supply: +/-12V (Reverse voltage protection)
Current Draw: ~50ma
Size: 4 HP
Depth: 32mm (including power header)

Notes: This is a simple 1U module designed to allow the monitoring of a system using headphones. However, if your cat isn't easily scared, the headphone jack doubles as a TRS stereo line level output. Simply connect the signal that you want to monitor to the 1/8? jacks, plug in your headphones, and adjust the volume as desired.

Notes: The module is built around high quality VCA chips from THAT Corp, as well as low noise opamps. It offers clickless muting and equal loudness panning. The distinct feature is that voltage control is dynamically compressed should it yield clipping when pushed too hard. Also, in both modes the attenuators offer full closing of the corresponding channel, regardless of being controlled by the CV, or not. The VCAs fully open (0dB gain) at CV=8V in Env mode and CV=5V in LFO mode. All the input and output signal levels are Eurorack levels.

Multiple Praga units can be chained thanks to dedicated headers on the back. The mixed stereo sum of each unit in the chain is added to the mixing bus of all units downstream.

A dedicated Hrad expander will offer master volume control, gate inputs for channels muting/unmuting, headphone amplifier, and voltage control over aux sends.

Notes: Module A-160-2 is an enhanced version of the standard clock divider A-160. The module is a frequency divider for clock/trigger/gate signals, designed to be a source of lower frequencies, particularly for rhythm uses. The Clock input will take any digital signal from, eg. LFO, MIDI sync, or the gate from a MIDI-CV interface. At the outputs, you have access to three sets of seven different sub-divided clock signals, from half the clock frequency down to 1/128. The low/high levels of the output signals are 0V and about +10V.

The A-160-2 also has a reset input. Whenever a reset signal is sensed, all outputs are set to certain levels which depend upon the selected mode.

These are the most important features of the module:

Three different sets of dividing factors, selected by a three-position switch at the front panel:
- Power of two: 2, 4, 8, 16, 32, 64, 128
- Prime numbers: 2, 3, 5, 7, 11, 13, 17
- Integer: 2, 3, 4, 5, 6, 7, 8

Two output modes, selected by a two-position switch at the front panel:
- Gate mode: outputs act like the outputs of typical binary dividers
- Trigger mode: in this mode the outputs are AND-wired with the clock signal (i.e. the clock pulsewidth affects the pulsewidth of the outputs)
- Clock edge type selected by a jumper on the pc board:
- Positive: the rising edge of the clock signal triggers the state change of the outputs
- Negative: the falling edge of the clock signal triggers the state change of the outputs

Reset behaviour by two jumpers on the pc board:
- Level triggered: the level at the Reset input triggers the Reset
- Edge triggered: the edge of the signal at the Reset input triggers the Reset
- Positive: a high level (> 2.5V) or the rising edge at the Reset input triggers the Reset
- Negative: a low level (< 1 V) or the falling edge at the Reset input triggers the Reset

Output polarity selected by a jumper on the pc board:
- Positive: non-inverted outputs
- Negative: all seven outputs are inverted

Width: 4HP / 20mm
Depth: 35mm (Measured from the rear side of the front panel)
Current: +12V: +50mA, -12V: -0mA

Notes: A-138s is a simple but useful 4-in-2 mixing tool. It has four inputs available. Each input is equipped with an attenuator (Level) and a panning control that is used to distribute the signal to the left and right output. Beyond stereo mixing it is equally suited to create variable parallel routings. For example: Any of the four inputs may be routed in variable intensity to feed two filters.

You may regard the A-138s as a smaller version of the A-138m Matrix Mixer.

Inputs and outputs are DC coupled, i.e. the module can be used for the mixing of control signals too.

- 3U Eurorack module, 8 HP wide, 30 mm in depth
- Power consumption: 10 mA at +12 V and 10 mA at -12 V

Notes: Erica Pico INPUT module is just what you need to interface your modular system with external synths or even your mp3 player or mobile phone.

It boosts external signal to modular synth signal level.

With the Pico Input, line signals from, for example, a synthesizer, drum-computer, audio interface or smartphone can be raised to modular level. The module delivers up to 40 dB of gain. Thanks to its two channels, users can comfortably process mono as well as stereo material.

The Pico Input comes equipped with two signal paths. Each signal path features an audio input, a volume potentiometer and an output. Up to 40 dB of amplification are available. Using jumpers on the circuit board, it is possible to dampen the maximum gain to 20 dB. The module's first input is a stereo jack, meaning the user can connect a smartphone or tablet without any adapter cables. In this case, incoming signals are distributed internally to both channels.

Notes: The 'Quaid Megaslope' is a five stage function generator or modulator which operates in one of 3 modes; a multistage 'CZ' or 'Juno' style complex envelope, a super flexible LFO and a step sequencer with per step programmable slew or slides.

Each mode produces a varying output voltage moving from point to point across a set number of chained together stages. Each stage features a destination level, an overall rate or time to reach its destination level and a variable slope for the output path to take. As well as direct control, every stage feature voltage control of both level and rate. There are both unipolar and bipolar voltage outputs together with triggers emitted for the end of each stage and the end of a full cycle.

The Quaid Megaslope is designed to be fun, flexible and intuitive to use.

Notes: Zadar is a powerful, four-channel envelope, modulation, and transient generator, in a compact yet very complete, feature-rich package. It is capable of synthesising a vast palette of envelope shapes starting from hundreds of shapes stored in the memory. These starting shapes are not mere wavetables, but flexible vectors that can be stretched (from a fraction of a millisecond to half an hour), flipped, warped, distorted, delayed, shuffled, repeated, and amplitude modulated in real time. A set of freely assignable CV inputs allows for external control of most parameters. Each channel can work independently or combined with other channels within one of the chaining and looping algorithms.

Operating Zadar is quick and immediate, thanks to its accessible interface and crisp OLED display. The main screen displays all parameters together with the currently selected shape. Entering the simple 3-page menu is needed only for advanced settings.

Notes: Another update for WMD's clever dual VCA, this time a little bigger to give more control. Digital control of CV and attenuation gives lots of creative options. Third time's a charm.

Supplier's Notes:
WMD have done several designs of this circuit over the years, the first one had no knobs, the second was too small, the MKIII is finally how this circuit should be packaged. This module does some really cool stuff and is super useful in any system.

The Digital VCA lets signal through like a normal VCA, but the CV and attenuation level is controlled digitally. This lets us do things like wait until there is a zero crossing to change the amplitude, resulting in clickless amplitude changes.

The Trigger mode causes the VCA to only update when a trigger is received. The addition of a noise circuit for each side let us do a very quick and easy sample and hold that never droops. With no input, 5V is normaled to the attenuator, so you get a 0-5V sample and hold. In Bipolar mode, you can get -5 to +5V.

Both sides have bipolar VCA mode (polarizer), which lets them invert the signal when negative CV comes in. Also known as ring modulation. With the zero crossing detector, this can produce some super wild wave shapes.

Features

Dual VCA Design
Unipolar or Bipolar Operation
DC Coupled Analogue Signal Path
Low Distortion / Low Noise
VCA Closes Completely
Zero Crossing Detector Mode
Trigger Mode
Two Independent Noise Sources
8 bit CV resolution
Great for Fast Envelopes and Sine Bass Sounds

Specifications

Power: +65mA, -45mA
Width: 8HP
Depth: 35mm with cables
Height: Eurorack 3U (128.5mm)
Board Height Behind Panel: 112mm
CV/Signal Input Impedance: 100k
Output Impedance: 1k
UPD in 3.3V Threshold Schmitt Trigger
ZCD produces 15us 5V pulse
5V CV to fully open VCA
Linear VCA response
20Vpp signal handling

Notes: Trim is a 2 channel passive attenuator. It features two individual channels of attenuation.

Notes: Full-featured triangle core VCO/LFO

The Dixie II+ is a larger variant of the classic Dixie II. Using the same great triangle core oscillator, it adds a number of features to make it even more versatile with only a modest increase in size. The Dixie II+ makes a great primary oscillator for a modular system, or a great companion the Rubicon.

Notes: USB socket for charging/powering peripheral devices.

This tiny but handy module connects the USB A connector to the +5V bus on the Intellijel TPS series powered busboards. Allowing 1A or more of current to be supplied to USB devices such as lamps, phone chargers, and usb powered musical devices.

It connects to the bus via supplied two-pin cable.

*Compatible with the TPS30 MAX and TPS80 busboards. TPS30MINI board requires an adapter.

Notes: A compact Voltage Controlled Oscillator designed for generating SINE waves, Variable wave-SHAPEs, SUB-Octaves, Oscillator SYNC and Linear FM in the analog domain.

The Sub-Timbral Oscillator is the more subtle and melodic friend to the DPO's complex harmonic lattice.

Notes: The MATHS music synthesizer module is an analogue computer designed for musical purposes. Amongst other things, it will allow you to:

Features

Generate a variety of linear, logarithmic, or exponential triggered or continuous functions

Integrate an incoming signal

With no signal applied, generate a variety of linear, logarithmic, or exponential functions

Add, subtract and OR up to 4 signals

Generate analogue signals from digital information (Gate / Clock)

Generate digital information (Gate / Clock) from analogue signals

Delay digital (Gate / Clock) information

If the above list reads like science rather than music, here is the translation:

Voltage Controlled Envelope or LFO as slow as 25 minutes and as fast as 1khz

Apply Lag, Slew or Portamento to control voltages

Change the depth of modulation and modulate backwards!

Combine up to 4 control signals to create more complex modulations

Musical Events such as Ramping up or Down in Tempo, on command

Initiating Musical events upon sensing motion in the system

Musical note division and / or Flam

Perfect for modulating the DPO and just about anything else

Page for Classic version of MATHS

Specifications

Width: 20hp
Max Depth
(incl. power cable): 32mm
Power:
60mA@ +12V
50mA @ -12V

Notes: The Multiple is a simple but important module that allows for sending a signal to multiple destinations. Within the Make Noise system the Multiple may also be used for combining clock, gate and pulse signals together to create interesting timing sources (in other words, it acts as a Gate combiner aka logic OR circuit).

It has 9 inter-connected sockets that may be split into different group combinations depending upon how it is patched. The jacks circled in white will make or break the interconnects between the 3 groups of three, thus allowing for three 3-way, one 5-way/ one 3-way or one 7-way multiple.

The Multiple is passive, because the Make Noise system does not require Buffered Multiples since all critical control signals are already buffered in such a way as to provide a large fan-out capability.

Notes: 'Beast's Chalkboard' is dual channel stepped voltage source and adder for your eurorack modular synthesizer system. It primarily is intended as a dual octave switcher for VCO's but has many other uses including sequence transposition, FM ratio creation, buffered CV distribution and VCO calibration.

Technical Specifications:

Supply: +/-12V (Reverse voltage & polyfuse protection)
Current Draw: ~30ma
Size: 6 HP
Depth: 22mm (including power header)
Offset Error: +/- 10mV

Notes: The 'S.B.G' is a compact utility module intended for the interfacing of guitar effect pedals with your eurorack modular system.

It provides both attenuation and amplification of audio signals for level matching together with a crossfade control to conveniently adjust the wet/dry mix of a processed signal. The module also offers regulation of outgoing CV signals for safer use of pedal expression inputs.

Technical Specifications:

Supply: +/-12V (Reverse voltage protection)
Current Draw: ~30ma
Size: 4 HP
Depth: 22mm (including power header)

Notes: Four channel voltage controlled Clock Divider/Multiplier with master Tap Tempo. Each channel can be synced to the tap tempo, to the channel above, or to an external clock. Each channel also has a reset jack.

With a Tap Tempo button and five sync'ed clock outputs, the QCD is a versatile head-of-the-chain "Master" clock module, and/or a complex rhythmic pattern generator.

Notes: The CP909 is the TR-909 clap sound analog generator in Eurorack format. This is yet another low-cost analog drum generator from a legendary drum machine in your modular synthesizer, expanding your Tiptop Audio modular drum machine even further.

The CP909 is an exact reproduction of the original analog circuit and, with the addition of just one extra knob, "trashing" the frequency of the internal noise generator, we have added greatly to the spectrum of sounds that can be generated - all that without compromising the signature sound of the TR-909 clap.

The CP909 clap effect is made by a special triple-saw envelope generator that controls the gain of a VCA. The sound source feeding into the VCA is made by a quasi-random logic based noise generator; some might call it "digital noise" though this term might be misleading in today's world of microcontrollers and sound samples. What really makes the noise generator is a ring of logic gates, so primitive, so BO's, and that's the sound of the 909 Clap!

The CP909 includes a high-powered output gain stage capable of producing hot signals. On the inputs, we have designed a pulse-shaper circuit so you can trigger the CP909 with trigger/gate signals from step sequencers, clock dividers, or any other pulse/clock sources. This eliminates the need to shape pulses sent to the module and ensures the same stable sound at peak power, regardless of your pulse source. Based on the architecture of the 909, the Accent input is versatile and able to take in both CV and Gate signals for continuously changing dynamics. All these unique features make integrating this legendary sound generator into your modular synth easy, unleashing the power of real analog drums.

Notes: Two independent Contour Envelope Generators in a single 12hp wide Eurorack module. These are very accurate replicas of the Model D contour generators, with identical circuitry and component values running on the correct +9.3V and -10v supply voltages of the original; so they exactly replicate the original envelope response along with all of it eccentricities. Extra features include manual trigger buttons and envelope status LED's.

The contour generators played a larger part in the sound of the Model D than many people realise. There are two factors that make them unique, firstly the exponential slope when is used in conjunction with the (near) linear slope of the original VCA which is responsible for the famous Model D "punch". Secondly, the re-trigger behaviour is quite unique, multiple retriggering increases the output level so that either the volume increases incrementally, or the filter opens incrementally with each extra key press.

AJH Synth have added independent Decay switches for each individual Contour Generator rather than the shared switch on the original synthesiser, these switches change the Contour response from AD (switch up) to ADSD mode (switch down).

Notes: Gritty drum voice module based on new old stock Yamaha FM synthesis chips, also capable of a decent range of synth tones. User-friendly knobby interface with a decent range of CV inputs for modulation.

Supplier's notes:
'Akemie's Taiko' is an authentic complete FM synthesis based drum voice created using original Yamaha IC's. It builds on the same technology used in the mighty Akemie's Castle but in a more complete triggered voice form featuring both signal generation and envelope shaping.

The module provides CV and direct control over a number of FM parameters including algorithm selection, operator release envelopes, ratios, waveforms & feedback. This gives a massive range of unique sounds.

The voice is able to track 1 volt per octave allowing it to be used for melodic lines as well as percussion. Also optional 'frequency ramps' can be enabled for additional audio effects.

The drum voice includes a trigger input as well as accent and choke trigger inputs to add further expressive and rhythmic control.

Notes: The Shifty is essentially a combination of four sample and hold stages, a sequential gate and sequencer controller. This collection of functions allows for some specific and useful utility application.

One of the primary uses for Shifty is to take a monophonic sequence source and route each new note of the sequence to up to four different synthesizer voices in a specific pattern. In this way you can create pseudo polyphonic sequences since each voice can be triggered to play and sustain while the next voice int the sequence gets triggered. Another term for this is hocketing.

The other main application of the Shifty is to function as an Analog Shift Register. In this mode each new gate input received causes the current set of pitches to be shifted to new output locations as a new one is added and the oldest one is replaced. This can be an interesting way to create chords that are up to four stacked notes when used with a pitch sequence source that has a harmonious series of notes (e.g. a pentatonic scale works really well). Even just using two of the outputs will yield very interesting melodic interplay and is an excellent way to make a simple sequence much more complex and interesting.

In a more basic way the Shifty could be used as a simple Sample/Track and Hold module or as a sequential gate.

Notes: The Stereo Triggered Sampler can record high quality stereo files, while simultaneously playing two different stereo files. A maximum of 600 samples can be loaded from the removable/swappable microSD card, in a variety of formats up to 96kHz/32-bit/stereo WAV. All sample parameters (1V/oct pitch, sample file selection, length, and start position) are CV controllable.

600 Samples:
A maximum of 600 samples can be loaded at once, arranged into banks of 10 samples each. Samples and banks can be re-arranged on the fly using the simple on-board Edit features. Newly recorded samples can be instantly played back and re-pitched, reversed, chopped up, etc... the result of which can even be bounced down and re-recorded to as a new sample! Sample files are limited to 4GB each, which is over 6 hours at 44k/16b/stereo.

Two Stereo Playback Channels:
Each playback channel has a knob and CV jack for Sample File selection, as well as a Start Position knob and CV jack for controlling where in the sample playback will begin. The Length knob and CV jack determine how much of the sample is played back: from tiny grains, to percussive hits, to longer loops... or just the entire file. These are powerful tools for re-arranging a sample, joining multiple samples, and creating dynamically re-sized loops within a larger sample. Combined with the Play Trigger jack and the 1V/oct jack, the STS can be two complete multi-timbral pitch-tracked stereo voices!
There's also a Reverse button and jack for backwards playback, and an End Out jack for synchronizing loops, or cascading sample playback with other events.

Looping and Sync:
Looping is easy: just hold the PLAY button down for two seconds to toggle loop or one-shot. The loop timing clock will output from the End Out jack. Or, send a clock into the Play Trig jack to sync the loop to external timing.

Stereo Recording:
Whether you patched 47 modules to create the ultimate percussive blast, or you want to capture your four hour ambient performance, recording high-quality .wav files on the STS is simple. Just hit the REC button or fire a trigger and a new stereo .wav file will be created on the SD card. Do as many takes as you need: the STS never deletes your files. Re-ordering or re-arranging samples into banks is easy, even without a computer.
You can even fill a bank with 10 different variations and immediately use them for playback.
By default the STS records at 44.1kHz/16-bit, with an option for 24-bit (a future update may increase the sample rate to 96kHz)

Easy sample loading:
Using a computer is completely optional with the STS, since samples can be recorded directly to the module and placed into the bank of your choosing. But for users with large existing sample banks, the intuitive automatic bank loading features make dragging and dropping your entire sample library a snap. You never have to rename your files again!

Notes: Killer physical modelling module collab from two of the biggest names in their respective fields of hardware and software. Generates a huge range of percussion instruments plus synths and bass tones.

Supplier's notes:
Plonk uses a technique known as physical modelling to synthesize, with great realism, the way in which sound is produced by acoustic instruments. The Plonk module is, itself, focused primarily on creating percussive sounds - both pitched and un-pitched; natural and unnatural; acoustic-sounding or totally electronic.

Plonk does this by breaking sound creation into two distinct elements - the exciter and the resonator. The exciter is a mathematical model of the device used to strike a particular surface. Plonk, because it's percussion oriented, has two types of exciters: one modelled on a mallet, and the other providing a noise source. The resonator is a virtualization of the object being struck, which vibrates, resonates and creates the body of a sound. Plonk offers several types of resonators: beam; marimba; drumhead; membrane; plate; and string.

Plonk provides numerous parameters that let you shape, mould and design both the exciter and the resonator, thus enabling you to synthesize the sound of striking or scraping almost any type of object - real or imagined. In this way, Plonk can accurately model the sounds of kicks, snares, toms, cymbals, claps, tablas, congas and all manner of traditional percussion instruments. It can also model pitched percussive instruments, like vibes, marimbas, and even bass or guitar-like tones. Of course, it additionally excels at modelling instruments that heretofore never existed.

Best of all, the sounds created by Plonk are not static - any sound you design can respond dynamically to velocity, as well as four different modulation inputs. This means the sound of Plonk can change completely from note-to-note (or strike-to-strike). Because of this, Plonk is actually a duophonic (2-voice) module, which lets the sound of one note decay naturally when a second note (possibly employing an entirely different set of modelling values) is struck. Thus, hitting a new note does not choke the sound of the previously struck note (unless you want it to, of course)!

Plonk stores up to 128 patches in its internal memory, and ships with many presets programmed by professional sound designers and composers. You may overwrite these patches if you wish, and banks of patches may be transferred via MIDI System Exclusive over Plonk's built-in mini-USB port to facilitate offline storage by programs or websites that support this capability.

Plonk was developed in cooperation with Montreal-based Applied Acoustics Systems - physical modelling pioneers, and the creators of Tassman, Lounge Lizard, String Studio, Ultra Analog, Chromaphone and numerous other plugins. It is with great pleasure that Intellijel brings the potential of this physical modelling technology to a hands-on, CV-laden device capable of the sort of dynamic control and sonic exploration that modular synthesists demand.

Notes: Each of the two sections of the module is capable of performing the analog multiplication of two signals (A and B) and add an offset (C). It can also act as a dual voltage controlled attenuverter, dual ring modulator, dual VCA or four channel mixer (see block diagram below).

The B inputs are routed to an attenuverter that multiplies the signal between -2 to 2, while the offset inputs (C) route through a unity gain attenuverter (multiplies the signal between -1 and 1).

The output of first section is routed to the output of the second (when the first's output is unused), so the second output can act as master to achieve (A1*B1+C1) + (A2*B2+C2) or (A1 + C1) + (A2 + C2) - a 4 channel mixer.

The through-zero (four-quadrant) multipliers in the A*B+C allow for true Ring Modulation. To achieve this, simply connect two waveforms to the A and B inputs.

Notes: A-180-9 is another simple but useful tool. It can be used to connect up to 14 signals between different cases by means of standard network cables (RJ45). These cables are available all over world smoothly in different lengths and colours. From the factory two black network cables with 0.5 m length are enclosed.

The upper network connector is wired to the eight sockets 1-8, the lower to the six sockets A-F. That way it's possible to pre-patch different cases and connect signals, that are required in all cases (e.g. clock, start/stop, master CV) by means of one or two cables only instead of 14 individual patch cables. When only eight signals are required only the upper network connector is required and the sockets 1-8 are used. When more than eight signals have to be patched both network connectors have to be used. It's also possible to wire the upper and lower network to different cases (i.e. signals 1-8 to external case #1 and signals A-F to external case#2).

The module is fully passive (no power supply required) and simply wires the 14 sockets to 14 pins of the network connectors.

The A-180-9 comes in pairs for combining two modular systems.

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.

The manual Delay control ranges - without external "Delay CV" - from about 5ms (fully CW) up to 2 minutes (fully CCW). By means of an external voltage applied to the "Delay CV" socket this range can be extended. A rising CV shortens the delay time (behaviour like a VCO)!

The Delay output voltage ranges from about 0V to +5V. The rising edge of the gate, clock or trigger signal applied to the "Delay Reset" sockets resets the Delay output voltage to 0 V.

"Delay Out" is normalled to the VCA CV input by means of the switching contact of the "VCA CV" socket and consequently controls the Triangle level provided that no other patch is made. A typical example is the usage of a Gate signal (e.g. from a USB/Midi-to-CV/Gate interface) as Delay Reset. That way a delayed vibrato or tremolo can be realized if the VCA output is patched to the frequency CV input of a VCO (or VCF), or the CV input of a VCA.

Notes: A-138s is a simple but useful 4-in-2 mixing tool. It has four inputs available. Each input is equipped with an attenuator (Level) and a panning control that is used to distribute the signal to the left and right output. Beyond stereo mixing it is equally suited to create variable parallel routings. For example: Any of the four inputs may be routed in variable intensity to feed two filters.

You may regard the A-138s as a smaller version of the A-138m Matrix Mixer.

Inputs and outputs are DC coupled, i.e. the module can be used for the mixing of control signals too.

- 3U Eurorack module, 8 HP wide, 30 mm in depth
- Power consumption: 10 mA at +12 V and 10 mA at -12 V

Notes: Module A-148 (Dual S&H) has two identical sample & hold modules, designed to produce 'staircase' voltages. The signal present at the sample input is sampled at a rate set by the signal at the trigger input, and held at that voltage at the S&H output.

The exact shape of the staircase depends on the sort of waveform at the sample input: NOISE or RANDOM signals produce random patterns; an LFO produces rising or falling staircase patterns.

Two LEDs for each S&H indicate the voltage (positive or negative) of the sampled signal.

Notes: Mimetic Digitalis is a 10HP step sequencer optimized for live use. MD includes four individually editable CV outputs and a trigger out. Each step can be manually programmed or use MD to live record CV sequences using the encoder. The zero button mutes the CV at a step and shred randomizes the voltage. Save and load up to 16 patterns. Edit a pattern and use undo to return to the unedited version.

Notes: Module A-140-2 contains two ADSR type envelope generators 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. 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. Changing the positions of the mentioned jumpers allows to modify the factory settings.

Notes: Great for generating random voltages from white noise, arpeggios from sawtooth waves, and downsampling audio signals.

Notes: The 'MCO' is a compact digital oscillator. It features a main 'morphing' wavetable output, an additional copy of this output with overlaid variable pulse width segments (ala Alpha Juno style saw wave pwm) and a sub square wave output an octave down to the main output. The waveform and pulse segment width and be both directly and voltage controlled. The pulse segment distribution can also be voltage controlled via the 'type' input.

Expect an early 90s slightly crunchy digital type sound (ala Ensoniq, Kawaii KX synths) rather than something striving for perfect analog emulation.

Notes: The 'HPO' is an affordable super slim and skiff friendly no frills stereo headphone driver output for your modular synthesiser. Includes a volume control and ability to double up a mono signal into stereo. A great use for that left over 2hp in a skiff or larger system.

Give loved ones, friends and acquaintances a break from your musical 'genius', the HPO offers a solitary cell for focused creativity impregnable from undeserving non-believers.

Notes: The WaveSwarm is a waveform animator and all analogue dual channel device.

Each channel simulates up to six VCO's beating in unison with a different beat frequency between each animation. The fixed beat frequencies are generated by twelve onboard LFO's, and the front panel pots control the level of each of the six animators, along with the level of the dry signal to the final mix. In addition to independent channel inputs and outputs it also has an A+B output, which sums the outputs of the two channels, creating an effect similar to twelve VCO's in unison! This is possible because channel B uses slightly different beat frequencies to channel A, they are not identical.

The input waveform can be saw, triangle, sine or wavetable/complex waveforms, in fact most waveforms with the exception of square or PWM waves will give some form of animation.

A soft clip circuit is built in so that at higher signal levels the signal magnitude is limited by rounding the top and bottom of the waveforms, thus slightly softening the sound. There are soft clip LED indicators for both channels.

It can produce huge, fat drones or supersaw type waveforms from a single sawtooth or triangle wave input.

Notes: This new device is a powerful new CV controlled effects unit for your electronic music setup and pairs extremely well with the KOMA Field Kit.

- Looper
- Frequency Shifter
- Sample Rate Reducer/Bitcrusher
- Digital Delay
- Analogue Spring Reverb
- 4 Channel VCA Mixer
- 4 Step Mini Sequencer
- Envelope Generator

All of this, combined with the new 4 Channel CV Interface which allows you to route four CV signals throughout the device, means an incredible control over sound and timbre and a great addition to your mobile performance rig.

The Field Kit FX is built up from 7 separate functional blocks all focused on mangling and changing incoming audio and CV signals. They are designed to operate together as a coherent addition to our Field Kit Electroacoustic Workstation or alternatively together with other pieces of music electronics with the ability to use control voltage signals.

Notes: The Multi-Delay Processor is a creatively usable echo effect with eight taps. The module's sound may remind you of classic bucket-brigade devices. - It even generates distinctive pitch effects when altering the delay time. An input mixer gives audio material a crisp, analogue character. Thanks to feedback channels with pitch shifter and reverb processor, shimmering echoes and other atmospheric effects can be achieved. A total of nine envelope followers and 14 audio outputs invite you to do extensive feedback patches and other edgy experiments.

The Multi-Delay Processor isn't just a high-quality echo effect but was designed to be a fundamental ingredient of patches. Its core is a bank of eight digital delays, which are wired in series. Together, the circuits form a multi-tap echo. The volume of each signal repetition as well as the raw material can be adjusted via faders. Furthermore, there are individual audio and envelope follower CV outputs for the dry signal and all taps. An analogue clock is used to control the echo circuits. The delay time can be set manually via a potentiometer plus there are two CV inputs with bipolar attenuators. Altering the delay time parameter during operation leads to pitch effects. At this point at latest, you'll realize the superiority of the serial memory design used by Mark Verbos over average effect chips. Despite its digital core, the Multi-Delay Processor offers charming sound reminiscent of a classic bucket-brigade device. - Only cleaner and more transparent.

A three-channel mixer with dedicated level potentiometers adds analogue character to signals before they are fed to the delay circuits. Without patch cables plucked into the second and / or third input, you can use these channels as feedback paths with additional effects. In detail, a pitch shifter calibrated to +1 octave (channel 2) and a reverb (channel 3) are available. - A perfect setup for creating shimmering echoes and other atmospheric effects. High feedback values make the module self-oscillate. In contrast to the multi-tap delay, which consists of individual components, an FV-1 chip is used for pitch shifting and reverberation. This processor is well-known, as it is the main component of multi-effects modules like the Erica Black Hole DSP and numerous guitar pedals. Here, the FV-1 is "just" a creative addition to the main effect.

In addition to the manual mix output, which emits the mixture of raw and effect material dialled in via the faders, there are four other audio outs. Two of these connectors provide signals derived from summing up all even respectively odd taps. The other sockets emit preset mixes with increasing or decreasing level. - Very cool for quickly creating special effects.

Notes: Welcome to the Forbidden Planet, an all analogue multi-mode filter design influenced by the 1975 Steiner-Parker Synthacon model. Control the Forbidden Planet manually or through CV and take the sound of your Eurorack into new orbits.

Forbidden Planet has three filter input jacks: High Pass, Low Pass and Band Pass. The High Pass section is this module's signature sound - a crisp sharp-cut with no residue, designed to add High Pass filtering capability to Tiptop Audio's wide range of Eurorack modules. Send a throbbing kick drum through the High Pass section and filter out the rumbling lows while maintaining the pulse of the beat. The Bandpass is clear and useful in isolating a pie-slice-range-of-frequencies while cutting off the low and highs, great for accurate sound design or sculpting audio into that sweet spot. The Low Pass is an airy classic 12db two-pole analogue slope ideal for monophonic synth patches and filtering down to the essential low-end bass we all love.

The Forbidden Planet Resonance utilizes an internal feedback path which can sound smooth or aggressive depending on the knob setting. At a low setting, it emphasizes the cut-off harmonics, at middle settings it begins to self-oscillate, and towards maximum setting it forms interesting tones and all sorts of chopped grainy bits of self-oscillation perfect for entering into a sci-fi world.

The Forbidden Planet is an impressive multi-mode analogue filter which adds a broader filter spectrum to the Tiptop Audio modular family and unlocks forbidden creative possibilities in a small package.

Notes: MMF is an analogue, multimode filter with a 12dB per octave slope. Its sonic character swings all the way from classic low pass to squelchy acid lines. Simultaneous outputs of low pass, high pass, and band pass filter types are provided allowing for many variations of the input signal. Whether you're looking for smooth and creamy, or resonant and wild, MMF can go there.

Notes: Mult is a 2 input, 6 output signal splitter. Channel 1 is normalled to channel 2 when no cable is present, allowing the user to split an input signal six ways, or two input signals with three outputs each.