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Notes: Module A-155-2 is a small, very compact designed analog sequencer with a lot of features. The sequence length is 8 steps. Each step has available a control for the adjustment of the control voltage for this step and an illuminated momentary switch (button). The buttons are used in the standard running mode to turn on/off the gate of the step in question (button illuminated = gate on, not illuminated = gate off). In combination with other controls at the bottom of the front panel the buttons are used for additional functions: depending on the position of the Program toggle switch the button Function is used to program the length of the sequence (switch position Limit), the running direction (switch position Direct.) or to call up the preset management (switch position Preset)

When function Direct (Direction) is selected these running modes are available:

Up

Down

2 x Up (each step is played twice with the normal tempo, not to be confused with Ratcheting x2, see below)

2 x Down (each step is played twice with the normal tempo, not to be confused with Ratcheting x2, see below)

Pendulum type 1 (start and end step are played twice)

2 x Pendulum type 1 (each step is played twice with the normal tempo, start and end step are played 4x)

Pendulum type 2 (start and end step are played once)

Random (Rnd)

When function Preset is selected the illuminated buttons are used to call up one of the 8 presets. In each preset these parameters are stored: active steps, running direction, length of the sequence, ratcheting. To call up one of the 8 stored presets one has to push and hold the button Function and then operate short-time one of the buttons 1 - 8 while the toggle switch Program is in position Preset. To store the present paramaters in one of the 8 presets the procedure is similar but one has to operate one of the buttons 1 - 8 for a longer time (approx 3 seconds).

Depending on the position of the Program toggle switch the Ratcheting button is used to program the ratcheting feature (x2, x3, x4) individually for each step of the sequence (toggle switch Program in position Rx2, Rx3 or Rx4). In case that at the step in question another ratcheting is already programmed (eg x2 or x3 when x4 is chosen) the other ratcheting is overwritten (kind of radio button function between the ratchetings x2, x3 and x4). Details about the ratcheting function are explained at the module A-160-5.

The button Start/Stop is used to start or stop the sequence manually. Button Reset sets the sequence to the first step. For this also the external input Reset can be used.

The module does not feature built in clock generator. Rather an external Clock signal is used. The positive edge of the incoming clock signal triggers the advance of the sequence to the next step.

The voltage range of the control voltage generated by the module can be switched to 3 different ranges by the toggle switch Range: 0 - +1V / 0 - +2V / 0 - +4V. The control voltage is available at socket CV. The voltage is not quantized. But there is an internal pin header available that outputs the data via Midi (note on/off from Midi note 36. Midi channel 1). It can be used to control a MIDI-to-CV interface if quantized control voltages are required, eg the planned Micro-CV-Interface A-190-9)

The Gate signal appears at socket Gate. The pulsewidth of the gate signal is defined by the pulsewidth of the clock signal provided that ratcheting is not active at the step in question.

Controls and displays:

1 - 8 (rotary controls): manual adjustment of the control voltage for each step

1 - 8 (illuminated momentary switches/buttons): manual gate setting for each step, also used for special functions in combination with other controls (setting of first/last step, running direction, ratcheting)

Range: toggle switch for selection of the control voltage range

Program: toggle switch for selection of a function in combination with the buttons Ratcheting and Function

Ratcheting: button for the programming of ratcheting in combination with the toggle switch Program

Function: button for the programming of sequence length (Limit) and running direction (Direct) as well as for the Preset management (Preset)

Sta/Stp: button for the manual control of Start and Stop, in running state the LED of this button displays the state of the Gate output (ie it flashes in the rhythm of the Gate output)

Reset : manual reset button

CV : control voltage output

Gate : gate output

Clock: clock input, the pulsewidth of the clocjk signal defines the pulsewidth gate signal

Reset: reset control input, reset type selectable via internal jumpers (eg positive edge triggers the jump to first step/positive leveltriggers the jump to first step and remains at first step as long as the reset input is high/waiting for the next positive edge of the clock signals before reset is carried out)

Notes: Module A-155-2 is a small, very compact designed analog sequencer with a lot of features. The sequence length is 8 steps. Each step has available a control for the adjustment of the control voltage for this step and an illuminated momentary switch (button). The buttons are used in the standard running mode to turn on/off the gate of the step in question (button illuminated = gate on, not illuminated = gate off). In combination with other controls at the bottom of the front panel the buttons are used for additional functions: depending on the position of the Program toggle switch the button Function is used to program the length of the sequence (switch position Limit), the running direction (switch position Direct.) or to call up the preset management (switch position Preset)

When function Direct (Direction) is selected these running modes are available:

Up

Down

2 x Up (each step is played twice with the normal tempo, not to be confused with Ratcheting x2, see below)

2 x Down (each step is played twice with the normal tempo, not to be confused with Ratcheting x2, see below)

Pendulum type 1 (start and end step are played twice)

2 x Pendulum type 1 (each step is played twice with the normal tempo, start and end step are played 4x)

Pendulum type 2 (start and end step are played once)

Random (Rnd)

When function Preset is selected the illuminated buttons are used to call up one of the 8 presets. In each preset these parameters are stored: active steps, running direction, length of the sequence, ratcheting. To call up one of the 8 stored presets one has to push and hold the button Function and then operate short-time one of the buttons 1 - 8 while the toggle switch Program is in position Preset. To store the present paramaters in one of the 8 presets the procedure is similar but one has to operate one of the buttons 1 - 8 for a longer time (approx 3 seconds).

Depending on the position of the Program toggle switch the Ratcheting button is used to program the ratcheting feature (x2, x3, x4) individually for each step of the sequence (toggle switch Program in position Rx2, Rx3 or Rx4). In case that at the step in question another ratcheting is already programmed (eg x2 or x3 when x4 is chosen) the other ratcheting is overwritten (kind of radio button function between the ratchetings x2, x3 and x4). Details about the ratcheting function are explained at the module A-160-5.

The button Start/Stop is used to start or stop the sequence manually. Button Reset sets the sequence to the first step. For this also the external input Reset can be used.

The module does not feature built in clock generator. Rather an external Clock signal is used. The positive edge of the incoming clock signal triggers the advance of the sequence to the next step.

The voltage range of the control voltage generated by the module can be switched to 3 different ranges by the toggle switch Range: 0 - +1V / 0 - +2V / 0 - +4V. The control voltage is available at socket CV. The voltage is not quantized. But there is an internal pin header available that outputs the data via Midi (note on/off from Midi note 36. Midi channel 1). It can be used to control a MIDI-to-CV interface if quantized control voltages are required, eg the planned Micro-CV-Interface A-190-9)

The Gate signal appears at socket Gate. The pulsewidth of the gate signal is defined by the pulsewidth of the clock signal provided that ratcheting is not active at the step in question.

Controls and displays:

1 - 8 (rotary controls): manual adjustment of the control voltage for each step

1 - 8 (illuminated momentary switches/buttons): manual gate setting for each step, also used for special functions in combination with other controls (setting of first/last step, running direction, ratcheting)

Range: toggle switch for selection of the control voltage range

Program: toggle switch for selection of a function in combination with the buttons Ratcheting and Function

Ratcheting: button for the programming of ratcheting in combination with the toggle switch Program

Function: button for the programming of sequence length (Limit) and running direction (Direct) as well as for the Preset management (Preset)

Sta/Stp: button for the manual control of Start and Stop, in running state the LED of this button displays the state of the Gate output (ie it flashes in the rhythm of the Gate output)

Reset : manual reset button

CV : control voltage output

Gate : gate output

Clock: clock input, the pulsewidth of the clocjk signal defines the pulsewidth gate signal

Reset: reset control input, reset type selectable via internal jumpers (eg positive edge triggers the jump to first step/positive leveltriggers the jump to first step and remains at first step as long as the reset input is high/waiting for the next positive edge of the clock signals before reset is carried out)

Notes: Smith: it's an 8 inputs & 8 outputs precision buffered matrix with presets. Each of the 8 outputs can take the signal from any of the 8 inputs, allowing over 16 million possible combinations.

This is not a mixer, the same input can be routed to many outputs, but several inputs can't be present at the same output simultaneously. The module works with both audio and CV signals, ins & outs have i10 volts range and minimum offset (1 millivolt approx.), which makes it perfect for distributing V/Oct signals too.

8 scenes that can be accessed through the dedicated push buttons but also by CV and trigger. 8 banks (with 8 scenes each, 64 scenes per preset). 8 persistent presets (with 8 banks of 8 scenes each).

This module can be used to store 'presets' for your live setup, allowing patch changes and easy rerouting signals with literally just pressing a button.

Another (more chaotic) way to use it is to plug several modulation sources to the inputs (such as envelopes, LFOs, sequenced CVs) and several modulation destinations to the outputs (filter cutoff, PWM, VCAs...). If you want to introduce a variation in the sound, select a different scene or directly randomize the current one to drastically change 'what is modulating what'.

Using audio sources can lead us to interesting territories too, sequencing waveform changes or using different processors (filter, distortion, folder...). Keep in mind that the switch performs pretty fast and the signal is passed without any modification (to preserve its accuracy, which is pretty important when using the module for v/oct) so with audio, the switching may be clicky. This depends on the sound source too, with 'dirty' ones there's no problem but with clean ones, like low pitched sine waves, it will be.

Notes: KRONO offers multiple clock modes (including Euclidean, Logic, Probabilistic, and more), tap-tempo or external clocking, real-time A/B output swapping, and full state memory.

All 12 outputs are customizable, and everything runs on an STM32F411 - with open code available via GitHub for advanced users and developers.

Modes - firmware v1.0

Ratios: Direct multiplications and divisions of the base tempo for proportional rhythmic ratios.

Euclidean: Generates Euclidean rhythms by distributing K pulses over N steps.

Musical: Applies common musical ratios (e.g., triplets, dotted notes, predefined swing divisions).

Probabilistic: Outputs trigger based on defined probability thresholds for each output.

Sequential: Generates clocks based on mathematical sequences (Fibonacci, prime numbers).

Swing: Applies individual swing/shuffle levels per output, delaying even beats.

Polyrhythm: Assigns independent X:Y ratios to outputs; output 6 can generate a logical sum.

Logic: Applies logic operations (AND, OR, XOR, NAND, XNOR) between internal clocks or external inputs (if configured).

Phasing: Generates pulses with configurable time offsets (phase shifts) relative to the main clock.

Chaos: Creates unpredictable rhythmic patterns based on chaotic algorithms

Notes: The mmMidi is a simple & compact MIDI interface for your Eurorack synthesiser. It translates two independent channels of MIDI note, velocity and gate information to corresponding control voltage signals via either a classic MIDI DIN type connection or as a driverless USB MIDI device.

The mmMidi also converts MIDI Clock to analogue x24 fixed clock and run outputs (i.e DIN Sync). The optional mmT expander provides a third MIDI channel of 8 key mapped gate outputs.

Requiring minimal configuration and a pain free set up, the mmMidi makes it easy to sync Pam's clock to your DAW, control multiple synth voices, and trigger drum or sample modules with the optional mmT expander. The new USB-C connection makes it easy to drive your modular not just from your computer but also via your tablet, phone or any USB MIDI Host.

(Note: New 2025 mkII version adds USB-C functionality.)

Technical Specifications

Power: +12V 50mA / -12V 0mA
Size: 4HP
Depth: 38mm
MIDI response latency: 200-400 uSec
Resolution: Factory calibrated 12 bit 0-8V CV outputs. +5V gates

Notes: Another iconic Buchla module gets the Eurorack reissue treatment courtesy of TipTop. The 242t is the brand's unique voltage-controlled clock and trigger module, generating pulses based on a 4x12 matrix.

Supplier's Notes:
The Buchla and Tiptop Audio 242t Programmable Pulser is a reissue of the time-event-based generator from the 1970s 200 series. At its center is the Pulser, a voltage-controlled clock oscillator with a wide frequency range, extending up to audio frequencies, numerous outputs, and start/stop controls. The Pulser drives a programmable matrix with three rows of up to 12 stages: (A), (B), and (C). Stages are activated using the X/Y coordinate controls, and the total number of stages can be set using the (n) row. Clock and Reset inputs allow the 242t to sync with other devices, while the Reset input can also be used to control the number of stages with external pulses.

Notes: AXON-2 is an 8HP expander module for the SQUID SALMPLE, MFX and Pamela's PRO Workout that like the AXON-1 provides 4 additional freely assignable CV inputs but additionally adds manual offset controls and 2 additional 'performance' buttons.

The addition of AXON-2 increases the Squid, MFX or Pam PRO's total number of CV inputs by 4, greatly increasing the possibilities for vast modular manipulation. Each of the CV inputs includes an offset for hands on control over parameters assigned to CV. Per assignment digital attenuation and offset via the host module is also available for fine tuning the modulation or control over parameters.

The AXON-2's large buttons are great for controlling select functions in a live performance environment or adding convenient quick navigation shortcuts when making edits. The buttons functionality and assignability are dependent on the host module. See respective manuals for details.

NOTE: AXON-2 support requires the latest firmware be installed for Pam Pro (120 or newer), Squid (187 or newer) and MFX (105 or newer).

Features
4 Additional freely assignable CV inputs for the SQUID SALMPLE, MFX or Pamela's PRO Workout
Manual offset knob controls
Two Assignable performance buttons for mutes, tap tempo, navigation, etc (dependant on module)
Powered directly from the module, no additional power header required
Made in England
Skiff friendly
Technical Specifications
Power: Additional approx 10mA on +12V

Size: 8HP

Depth: 38mm

Notes: The MetaModule Audio Expander (MetaAIO) adds an additional 6 CV/Audio inputs and 8 CV/Audio outputs to your MetaModule patches, via a ribbon cable connected to the main MetaModule. The MetaAIO provides the same high-quality as the MetaModule's Audio/CV jacks (24-bit, 48kHz default, up to 96kHz).

Notes: Best value Buchla module ever? An official Buchla module produced by TipTop Audio, the 258t is a dual triangle-core oscillator, with sine/sawtooth wave shapes in the top half and sine/square at the bottom. Bags of character.

Supplier's Notes:
Two independent voltage-controlled oscillators. Each has one processing input, a frequency modulation input and a 1V/oct input.

Waveshapes, as well as frequency, can be voltage controlled. Model 258 oscillators feature low sine wave harmonic content, negligible settling error, and high short and long-term stability, even with rapidly changing ambient temperatures.

Trimmers:

There are three trimmers for each oscillator on the back of the module:

1V/oct is the octave tracking trimmer and is set at the factory using high precision instruments.
SHAPE is the trimmer that set the sine wave, for the lower harmonic content of the sine wave.
VC WAVE SHAPE sets the response of the waveshaper to the incoming control voltage. Both SHAPE and VC WAVE SHAPE trimmers are used to adjust the sine wave purity.

Size: 18HP
Depth: 45mm
Power: +12V 70mA / -12V 40mA

Notes: CIRRUS is a real-time granular processor for audio signals. This module is a 100% adaption of Mutable Instruments' Clouds module, a well known module in the Eurorack world.

The incoming audio signal is divided into separate short particles of selectable size, pitch and shape; these so called "grains" are then recombined in real-time in various assignments and by different algorithms, resulting in interesting, moving textures. This is even more intensified by allpass filters and a reverb, so even a short input pulse results in a huge wash of sound.

The audio processing works on up to 32kHz sampling rate in stereo and 16bit resolution for input and output (and can be reduced to 16kHz, 8bit mono for an increased sampling time of 8 seconds). Even with a mono input signal, a wide stereo output is simulated by randomly panning grains and the reverb.

A freeze button freezes the audio buffer and the sonic qualities can still be explored with the parameters in real-time..

All parameters can be CV controlled, of course.

Notes: Module A-150-8 contains eight manually/voltage controlled switches. Each of the eight switches has a manual control button (Man.), a control voltage input (CV), a common Out / Input (O/I), and two In / Outputs (I/O1, I/O2). The switches are bi-directional, i.e. they can work in both directions, so can connect one input to either of two outputs, or either of two inputs to one output. Two LEDs show which in / output is active (i.e. which is connected to the common out / input). In addition, the LEDs are used for the programming of the module:

For each unit the operating mode can be selected: Toggle or Level controlled. In Toggle mode the rising edge of the CV input or operating the manual control button changes the state of the switch. In Level mode the switch state is defined by the voltage applied to the CV input (low voltage = I/O1, high voltage = I/O2) or by the state of the manual control button (not pressed = I/O1, pressed = I/O2). The modes are programmed very easily: Operating the Toggle/Level button of the program section displays the current state of each switch with the LEDs: left LED on = Toggle mode, right LED on = Level mode. Operating the manual control button of the switch in question changes the toggle/level mode while the Toggle/Level button of the program section is operated. During the programming patched CV signals may have to be removed as the CV signals would interfere with the manual operating buttons during the programming process.

In addition, it's possible to define master/slave groups. In such a group the upper unit (= master) controls also the state of the following switches provided that they are defined as slaves. Master/slave programming is also very simple: Operating the Master/Slave button of the program section displays the current state of each switch with the LEDs: left LED on = Master, right LED on = Slave.

When all 8 units are defined as master all switches are independent from each other. If for example the sequence is MSSSMSMS the control unit of the first switch also controls the switches 2, 3 and 4. The control unit of switch 5 also controls the switch 6, and the control unit of switch 7 also controls the switch 8. The current states of the slave switches are overwritten by the state of the master switch.

Technical note: To protect the electronic switches in case of an unsuitable patch (e.g. connection of two outputs) a 1k protection resistor is inserted into the O/I line of each switch. If control voltages used for VCOs are switched this may cause a small voltage drop and lead to undesired audible detuning. For this application we recommend to insert a CV buffer between A-150-8 and the VCO(s), e.g. the Buffered Multiple A-180-3 or the Precision Adder A-185-2. Integrating the buffers into the module A-150-8 was not possible because this would ruin the bidirectionality of the switches.

Width: 12 HP / 60.6 mm
Depth: 55 mm (measured from the rear side of the front panel)
Current: +40mA (+12V) / -5mA (-12V)

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: One of the most authentic sounding emulations of the famous Russian synth the Formanta Radio Factory Polivoks in 10HP

Erica Synths Black Polivoks VCF is one of the most authentic sounding emulations of the famous Russian synth the Formanta Radio Factory Polivoks.

The original Russian ICs K140UD12 are used in the sound circuit. Several updates were added to adapt the VCF for contemporary modular synth demands, it has independently buffered inputs, extended Cutoff knob, eliminated clicks when switching filter modes and output stage added to eliminate signal inversion. The result is a much punchier bass sound and very smooth controls.

Erica Black series are high-end modules with unique functionality. Only the highest quality components are used and all inputs and outputs are protected against undesired overvoltage. When designing the Black Series, design and usability was prioritised over module width. Big knobs are assigned to functions that make difference in sound. Together the Erica Black series are a range of modules that make an entire synthesizer.

Technical specifications:

Input level: up to 20Vptp
CV input level: 10V - +10V
Filter modes: BP(6dB/oct)/LP(12dB/oct)
Power consumption: +11mA, -11mA
Module width: 10 HP
Module depth: 25mm

Notes: Black Stereo Mixer is just what you need, if your setup has several nowadays gaining popularity modules with stereo inputs or outputs, like Black Hole DSP, Erica Fusion Delay, MI Clouds or some other. In order to save rack space, we designed compact mixer with lot of cool, performance oriented features.

In order to save rack space, we designed a compact mixer with a lot of cool, performance oriented features.

Check out also the Black Pre-fade Listen Expander that is a satellite module to Erica Synths Black Stereo Mixer!

Erica Black series are high-end modules with unique functionality. Only the highest quality components are used and all inputs and outputs are protected against undesired overvoltage. When designing the Black Series, we did not economise on the module width, we put design and usability first. Big knobs are assigned to functions that make difference in sound. Together the Erica Black series are a range of modules that make an entire synthesizer.

Notes: Introducing the HATS909, part of TipTop's new series of drum modules that brings those classic percussion sounds into the modular synth world, instantly turning your system into a self-contained music machine.

The HATS909 is the TR-909's original Closed and Open Hi-Hats circuits adapted for use in Eurorack modular synthesizer format and was designed to sound like a machine coming fresh off the assembly line back in the 80's. Improving on the original, TipTop have added some great new features that expand the sound palette that can be produced with this small, powerful module.

The original TR-909 circuit is made with a combination of low-fi sound samples that pass through a series of analogue elements to provide envelope and filtering to the source sound. The HATS909 module allows for manual and voltage control of the sample's tuning, which provides anything from crushed hats and short ticks to the original sound and anything between. Additional controls allow you to send a voltage control signal to either the tune input or the internal VCA for modulation with external control signals and, using a modulation switch, add AM or FM synthesis in the audio range from external oscillators, other drum sounds, or just about any other sound source. Lastly, HATS909 also offers a switch that allows you to tap directly into the raw output of the module for a unique sound source that can used throughout your system.

Just like the other drums in this series, the HATS909 high-powered output gain stage allows you to further harmonize the sound through distortion and clipping. On each gate input, Tiptop have designed a dual pulse-shaper circuit so you can trigger your HATS909 with trigger/gate signals from step sequencers, clock dividers, or any other pulse/clock sources.

TR-909 is a Trademark of Roland Corp Japan

Size: 8HP
Depth: 36mm
Power: +12V 33ma / -12V 22ma

Notes: Row Power is a clean, regulated, and protected power solution for Eurorack systems. Row Power 45 provides enough power for two to three typical Eurorack rows (typically up to about 312HP):
+12V @ 2.0A maximum, 1.5A recommended
-12V @ 1.4A maximum, 1.2A recommended
+5V @ 1.5A maximum, 1.2A recommended

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. For custom power systems, the Row Power 45 has a set of easily soldered holes for using large gauge wire or MTA156 connectors to connect to distribution bus boards.

Multiple Row Power modules can be powered from a single power brick by daisy-chaining with an inexpensive barrel cable. The Row Power 45 can also be daisy-chained to 4ms Company's Pod enclosures. Each power supply is independently regulated and protected for ultra-low cross-talk between rows/pods.

The Row Power 45 is compatible with the 4ms Row Power Shield. This device (sold separately) attaches to the back of the Row Power 45 and monitors the amount of current being drawn, as well as the voltages of the power rails. The information is sent over Bluetooth to be displayed on a phone or tablet.

Electrical and Mechanical Specifications

Module Size:
4 HP Eurorack format module

Power Output:
Maximum average load under normal conditions: +12V @ 2.0A, -12V @ 1.4A, +5V @ 1.5A
Maximum average load under any condition: +12V @ 1.5A, -12V @ 1.2A, +5V @ 1.2A
Powered by laptop-style DC power supply: 2.1mm barrel, positive center, 15V-20V.

Included with the Row Power 45:
16-to-16 pin power cable
2 M3 Knurlie screws

Notes: The SCM Plus is a clock multiplier with eight gate outputs and complex beat manipulation features. It combines the classic Shuffling Clock Multiplier (SCM) and SCM Breakout (SCMBO) into a single module using higher precision hardware than its predecessors.

Specs:

Electrical and Mechanical Specifications

12HP Eurorack format module
0.95" (24mm) maximum depth (includes power cable)
16-pin Eurorack power header

Power consumption
+12V: 52mA max
-12V: 15mA

Clock Input
2.5V threshold
40kHz maximum

Clock Outputs
12V gate outputs, rise/fall time approximately 1us
40kHz maximum
Jitter (x1 output): max 30us < 120BPM, max 5us >= 120BPM
Latency (clock in to x1 output): 8us worst-case, 3.5us typical

CV Inputs:
Rotate, Slip: Knob attenuates jack signal. Full range: 0V to +3.3V
Shuffle, Skip, PW: Knob offsets jack signal. Full range: -5V to +5V
Gate Inputs:
4x Fast, Mute: 2.5V threshold. Button toggles state.

Notes: This is an exact hardware replica of the Mutable Instruments Veils 2020 module. After Later used the "hard-to-find" OPA1679 opamps, but we did switch the package from TSSOP to SOIC, to keep costs down. It is the same part/specs, just a different package.

Based on open source designs by emilie gillet under Creative Commons (CC-BY-SA) license.

Width: 10hp
12V: 50mA
-12V: 50mA

Notes: uBurst

This is a new build of the micro version of Mutable Instruments Clouds. The module retains all the functions of the original Clouds, taking up significantly less rack space.

These modules use tall bushing potentiometers to offer a more stable feel.

The module is fully assembled, tested, and calibrated. Eurorack power cable is included.

Notes: Lipsk facilitates the inversion of the individual bits produced by Drezno (or any other module connected to its input header at the back), and delivers the resulting code to its output header. Bit inversion can be manually controlled by pressing any of combination of its eight illuminated buttons, or it can be automated by patching gate signals into its gate input sockets. An active (5V) gate flips the state of the respective bit. If the button is active (bit already flipped), then the gate flips the bit again yielding double inversion (no inversion). The corresponding LEDs show the combined effect of both manual and gate actions. The bit processing logic is hardware-based, so there is virtually no latency, allowing the binary signals to be manipulated at extreme rates.

Notes: Tallin is a dual voltage controlled amplifier (VCA) with overdrive, offering some unusual control features and a range of attractive tonal characteristics. Each of the two identical channels offers two simultaneously available inputs for voltage control over signal attenuation or gain, with linear and exponential response to CV. Volume control knobs offer manual gain settings ranging from fully closed (-80dB) up to +18dB. A colour LED indicator displays output signal levels. A soft-clip circuit avoids harsh clipping distortion, while a switchable overdrive circuit offers two carefully crafted distortion responses, simulating the sound of classic tube amplifiers.

Since both CV inputs are simultaneously active, they can be jointly exploited within patches featuring more complex volume control that otherwise would require using two traditional VCAs in series. As the signal path is DC-coupled, Tallin can also be used for handling the control voltages.

Notes: User-friendly mid/side processing module. Tweak the stereo image or split a stereo signal into mid and side elements then route out to other modules for further processing before summing back together. Powerful.

Supplier's Notes:
Minsk is a stereo image processor. It is a hybrid tool that combines digital and analog processing to facilitate advanced mid/side (M/S) manipulation of a stereo signal pair. It allows for separate treatment of the mid and side components, which affects the depth and width of the auditory scene. Minsk offers both manual and voltage control of the stereo width, as well as two dimension effects for enhancing the existing stereo image or creating a faux stereo image based on the stereo or mono input source. Minsk is especially handy during the preparation of a vinyl release or before a club concert, because it can eliminate out-of-phase low-end frequencies (high pass filter at 300Hz with the filter slope 12dB/oct, 50Hz with the filter slope 24dB/oct).

Dimensions:
6 HP

Current Draw:
140 mA +12V
40 mA -12V
0 mA 5V

Notes: A rock-solid all-rounder of a VCO, the Cycle 5 is a triangle-core oscillator with morphable wave shapes as well as conventional sine, triangle, saw and pulse outputs. Switchable octaves and 5th transposition make the module even more user friendly.

Supplier's Notes:
A small Eurorack oscillator that packs a punch: that's the best way to summarise Cycle 5.

At its heart lies a refined high-stability triangle core voltage controlled oscillator (VCO), with performance matching or exceeding that of much bigger and costly oscillator modules.

Instead of a coarse frequency knob, a 7-position octave switch is provided. This in combination with a perfect fifth transposition switch and factory pitch tuning, makes Cycle 5 an exceptionally straightforward and musical VCO to use: simply centre the fine tune knob, and the module will be instantly tuned to reference C.

Meanwhile, its dual precision volt per octave inputs add a great deal of versatility. For example, one could be used for pitch sequencing and the other as a generic exponential FM input, or both sequenced together for transposition effectsithe dual inputs serving as a built-in precision adder.

Sporting all the classic waveforms, ranging from sine wave, triangle, saw and square/saw, as well as a hard sync input and low frequency oscillator (LFO) mode, Cycle 5 makes for a real workhorse VCO. The novel trigonometric waveshaper results in a very clean sine wave, ideal for sub bass duty.

Cycle 5's highlight however, is its vari-wave feature. By adjusting the vari-wave knob, the waveform on the matching output will smoothly morph from sine, to triangle, saw, square and finally a very narrow pulse. The vari-wave parameter can be CV controlled, up to audio frequencies for some intense timbres.

Equally at home as a modest modulation companion to big VCOs, as being in the spotlight in miniature or polyphonic systems, Cycle 5 might just be the most multi-talented tiny analogue oscillator yet.

6 HP | +12: 75 mA, -12: 70 mA

Notes: For decades, the voltage controlled slew limiter has been a staple of modular synthesisers. With its extreme versatility, it can be used to slew control voltages (CVs), create envelopes, as a low-frequency or audio oscillator and much more.

Today, Contour 1 brings a fresh approach to this classic circuit. It delivers much improved performance and control by incorporating modern design techniques.

At its most basic, a slew limiter slows down the rate of voltage change in a signal. On Contour 1, the rising and falling rates can be individually set using sliders and CV modulation.

The gate and trigger inputs allow the module to be used as a function generator: create snappy attack-release (AR) and attack-decay (AD) envelopes, with slope times ranging from 500 us to 30 seconds. The dedicated gate input makes it easy to generate +10 V envelopes from any signal source. Using the large tactile push button, AD envelopes can be manually triggered. A trigger will also reset the output voltage.

When set to loop mode, Contour 1 will continually re-trigger itself. In this mode, it fulfils the role of a variable-shape low-frequency oscillator (LFO) or temperature-stable voltage controlled oscillator (VCO) in the audio range.

Both the rising and falling slopes can be individually bent, from concave through linear to convex. While doing so, the deviation in slope time, and thus oscillation frequency, is kept to a minimum. Since the bend parameters are separately voltage controllable, boundless modulation possibilities present themselves.

Explore anything from shape-shifting envelopes to rich VCO timbres: Contour 1 will make you re-think what a slew limiter can do.

Dimensions
8 HP
30 mm deep

Current Draw
90 mA +12V
85 mA -12V

Notes: The Endorphin.es 1U Cockpit X Black is a newly designed 6-channel stereo mixer with transparent VCAs, featuring four inputs on the front and two auxiliary inputs on the rear. Sidechain ducking makes it easy to get a great balanced sound, just input the trigger of your sound and you are good to go.

The perfect mixer for summing signals in your system while patching, or even as an end-of-chain mixer to go into your interface, mixer... whatever you fancy.

Power consumption: 55mA at +12V and 35mA at -12V

Depth: 30 mm

24 HP

Notes: Now available in Intellijel's 1U format, the Milky Way is Endorphin.es's stereo effect module, featuring 16 programs: reverbs, delays, chorus, flanger, compressor and more. Versatile.

Supplier's Notes:
Tasty multi-effects module in Intellijel's 1U format. Eight stereo effect programs include meta CV scanning along with Airways and Darkwaves banks borrowed from the Blck_Noir and Grand Terminal modules.

Supplier's Notes:
Milky Way is a stereo FX module already know from the Blck_Noir and the Grand Terminal. It offers 8 types of effects.


simple and effective 6hp stereo FX module
8 types of effects available with meta CV scanning, 2 famous Airways and Darkwaves banks (more banks coming soon)
volume control with VCA
Airways:

Hall Reverb
Shimmer Reverb
Stereo Room Reverb
Plate Reverb
Spring Reverb
Ping-Pong Delay
Tape Echo Delay
Chorus
Darkwaves:

Gated Reverb
Spring Reverb
Ping-Pong Delay
Flanger
Ring Modulator
Overdrive
Compressor
Freezer
Power consumption: 117mA at +12 V and 12mA at -12 V

Depth: 42mm

HP : 22

Notes: A warm and deep sound source you can rely on

A flexible and warm Analog Multifunction Oscillator, rich in harmonics. Excellent for performance use!

ONA can work as an Audio Oscillator or as a Low Frequency Modulator and it provides control over all its parameters, making it a versatile, deep and easy-to-use oscillator.

Thanks to its triangle-core oscillator and wave-shapers you can choose between a big palette of output waveforms to give shape to your ideas.

Classic Waveforms. Sine, Triangle, Saw and Square.

2 Complex Waveforms with Pulse Width Modulation.

2 Sub-Waveforms to add some bass sounds easily.

Blend them to give unlimited depth to your sound!

Notes: The Mutant Brain is the central nervous system connecting your modular analogue eurorack system to MIDI gear, especially for percussion, polyphonic notes and sync duties! It packs 16 eurorack compatible outputs into a tiny, super affordable 8HP package.

The 4 CV outputs and 12 Gate/Trig outputs are all universally reconfigurable. Triggers, gates, clock divisions and sync signals, polyphonic keyboard playing, velocity, sequencer transport, LFOs - you name it!

Configuring your patch is easy - just assign each output as you like in the Mutant Brain Surgery configuration utility, then send the MIDI SysEx file to the module and forget about it - the Mutant Brain remembers it all for you.

Hexinverter supply a convenient download pack of pre-configured, ready to use Mutant Brain patches for some select sequencing and drum machine devices on the market today, easily turning those sequencers and drum machines into a modular control powerhouse!

Designed with live and studio performance in mind, the Mutant Brain does away with wasted panel space and complex menu-diving interfaces, while freeing you from the limited "auto-learn" type MIDI interface. An auto-learn interface sometimes doesn't play well with the limitless combinations of different gear setups which today's modular performers play live with.

4 CV Outputs (0V to 8V) can be

Notes (Mono or Polyphonic, V/Oct or V/Hz)
Pitch Bend, Velocity or Aftertouch
MIDI CC values (LFOs, modulation, etc.)
Fixed Voltage Values
12 GATE Outputs (0 to 5V) can be

Note Gates and Triggers
Drum Triggers, Retriggers
MIDI Transport (Start, Stop, Run, Resets)
MIDI Clock Ticks (Divisions)
CC Value Above/Below Threshold
Each GATE output has an adjustable trigger length between 1 and 120ms

Dimensions
8 HP
38 mm deep

Current Draw
19 mA +12V
4 mA -12V

Notes: Motion Pictures

(Delay And Reverb)

Motion Pictures combines lush delay and reverb with intuitive, powerful controls within a 10HP module. Choose between a crisp digital delay or a warm analogue delay and pair it with a spacious, large-hall stereo reverb. Delay and reverb levels can be adjusted independently, allowing you to use them separately or together. The delay time can be controlled using a knob, tap tempo, or CV. You can even send opposing CV signals to the tap tempo and delay time for glitchy, pitch-bending, rhythmic effects. Additionally, CV control extends to the feedback, delay, and reverb levels, providing greater flexibility. Motion Pictures offers rich ambient sounds in a compact design, combining delay and reverb in one module to optimize rack space while preserving sonic depth.

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.

Notes: Module A-147-4 is a dual voltage controlled LFO (Low Frequency Oscillator). Each LFO has the five waveforms triangle, sine, rising and falling sawtooth, as well as rectangle available. The rectangle output features manually adjustable pulsewidth and pulsewidth modulation by means of an external control voltage. The core waveform is triangle. The other waveforms are derived from triangle by means of waveform converters. The frequency of each LFO can be adjusted manually and modulated by means of an external control voltage with associated attenuator and polarity switch. By means of a jumper the basic frequency range of each LFO can selected: about 0.02 Hz (~ 50 seconds) ... 2.5kHz or about 0.0017 Hz(~ 600 seconds) ... 220Hz. That way each LFO can be used also as a VCO with a max. frequency of about 2.5kHz. Each LFO features a reset input which can be used to reset the triangle signal.

The module has these controls and in/outputs available:

Control F : manual control of the frequency, for each LFO the frequency range can be selected by means of a jumper from two values (see technical notes)

frequency coverage of control F in the high frequency range: about 0.075 Hz (~ 13 seconds) ... 1,4kHz

frequency coverage of control F in the low frequency range: about 0.007 Hz (~ 140 seconds) ... 125Hz

Control CV: attenuator for the signal applied to the CV socket, by means of a jumper a small positive voltage can be applied to the switching contact of the /CV/ socket, as long as no patch cable is connected to /CV/ socket the CV control then works as fine control for the frequency

Switch CV Pol.: polarity switch for the signal applied to the socket /CV/

Control PW/PM: combined control for manual and CV control of the rectangle pulsewidth:

when no patch cable is connected to socket /P/ the control is used to adjust the pulsewidth (PW) manually

when a patch cable is connected to socket /P/ the control works as attenuator for the external CV signal with a basic pulsewidth of 50:50.

Socket /CV/: frequency control voltage input, in the factory the module is adjusted so that the sensitivity of this input is exactly 1V/octave when the CV control is fully CW.

Socket /R/: reset input, according to the associated jumper the reset input is edge triggered or level controlled (see technical notes for details)

Socket /P/: pulsewidth control voltage input

Sockets with waveform symbol: output of the waveform in question (triangle, sine, rising and falling sawtooth, rectangle)

The output voltage ranges are about -5V ... +5V (10Vpp), except the rectangle output

For the rectangle output one can choose by means of a jumper if the range is about -5V ... +5V or 0...+10V.

LED: visual control of the LFO (triangle)

The inputs of the module are labelled with white characters on black background (in the text included into two slashes). The outputs are labelled with black characters.
Technical notes and special features:

The basic frequency range of each LFO can be selected by means of a jumper. The settings correspond to two different capacitor values for the VCO circuit. The relation between the two ranges is about 1:11. When the upper range is selected frequencies from about 0.02 Hz up to 2.5kHz can be generated. For the lower range the values are about 0.0017 Hz ... 220Hz. To obtain these full frequency ranges external control voltages are required. With the frequency control F only the frequencies mentioned above are possible.

Apart from that the range for the manual control F can be reduced to obtain a finer resolutuion. For this a jumper has to be removed. The range of control F is then reduced to about 1:4.5 only.

In the factory the starting voltage of the triangle output after a reset is adjusted to 0V, i.e. the triangle starts from 0V with the rising slope after a reset. By means of a trimming potentiometer the starting voltage can be adjusted to another value (e.g. to -5V).

Another jumper is used to set the reset behaviour to edge triggered or level controlled. When set to edge triggered the rising edge of reset signal is used for the reset (independent of the duration of the "high" state of the reset signal). When set to level controlled the triangle output remains at the starting voltage as long as the reset signal is "high". Only when the reset signal turns "low" the triangle starts.

Dimensions
8 HP
45 mm deep

Current Draw
80 mA +12V
70 mA -12V

Notes: Module A-135-5 is a combination of a voltage controlled polyphonic mixer and a polyphonic suboctave generator. It is made of 12 voltage controlled amplifiers (VCAs) which are arranged in form of a 4x3 matrix. Herewith up to three four-voice polyphonic signals (e.g. the outputs of three polyphonic VCOs A-111-4) can be mixed. The level of each of the three polyphonic channels (A, B, C) with four voices each can be controlled manually or by means of an external control voltage with associated attenuators.

In addition the module features four frequency dividers which derive the suboctaves from the four input signals of channel A. The suboctave signals are wired to the switching contacts of the sockets of channel B. As long as the sockets of channel B are not patched the suboctave signals of channel A are used as inputs for channel B. The suboctaves are symmetrical rectangle waves with half the frequency of the corresponding signal A. For example two polyphonic VCOs A-111-4) can be used and patched to the channels A and C. Channel B then provides the suboctaves of channel A.

As the module is fully DC coupled it can be used also for the mixing of control voltages in a polyphonic environment (e.g. for envelopes, LFOs or other control voltages).

The switching contacts of the 12 input sockets and the four outputs are internally connected to pin headers. That way the module can be internally pre-patched to other polyphonic modules (e.g. the four inputs A to an A-111-4, the four inputs C to another A-111-4 and the outputs to the polyphonic filter A-105-4). As the switching contacts of the sockets are used for the internal pre-patching the internal patch can be overridden by using the sockets at the front panel.

The module has these controls and in/outputs available:

Controls Lev.A, Lev.B, Lev.C: manual level adjustment of the channels A, B and C

Controls CV A, CV B, CV C: attenuators for the corresponding control voltage inputs

Sockets A1...4: inputs channel A

Sockets B1...4: inputs channel B (if the sockets are not patched the suboctave signals are used for the inputs B)

Sockets C1...4: inputs channel C

Sockets CV A. CV B, CV C: control voltage inputs for the channels A, B and C

Sockets Out 1...4: outputs

Dimensions
10 HP
55 mm deep

Notes: Module A-121d is a special dual multimode filter which can be used for parallel or serial organized dual mono filters. Even stereo applications are imaginable. The filters are based on two special circuits: one with highpass and bandpass outputs, the other with lowpass and bandpass outputs. It's a new filter design that is not used so far in any other A-100 filter module.

We attached great importance to the usability of the manual controls and CV inputs for dual filter applications: for the filter frequencies of both filters a common control (Frequ.) and a difference control (Delta, filter spread) are available. For both parameters even CV inputs are available (FCV, DCV). The resonance (Q1, Q2), the sensitivity of the individual frequency control input (FCV1, FCV2) and the level of the audio input (In1, In2) are adjusted by means of the individual controls for each filter.

The module has a simple audio mixing unit available with the inputs Mx1 and Mx2, and the output MxO. Provided that the mixer inputs are open bandpass 1 and bandpass 2 are normalised to the sockets Mx1 and Mx2. All other filter types are realized by connecting the other filter outputs (H1 = highpass 1, L2 = lowpass 2) to the mixer inputs.

Controls:
Frequ.: master frequency control for both filters
Delta: controls the difference between the frequencies of the two filters manually (frequency spread), at centre position the frequencies are about the same
Q1 / Q2: resonance controls for filter 1 and 2
FCV1 / FCV2: attenuators for the individual frequency control inputs FCV1 (filter 1) and FCV2 (filter 2)
In 1 / In 2: attenuators for the audio inputs of filter 1 and 2

Sockets:
Mx1 / Mx2: audio inputs of the mixer, Mx1 is normalised to bandpass 1 (B1), Mx2 is normalised to bandpass 2 (B2)
MxO: audio output of the mixer
In1 / In2: audio input of filter 1 and 2 (In2 is normalised to In1)
H1: highpass output filter 1
L2: lowpass output filter 2
B2: bandpass output filter 2
DCV: control voltage input for frequency spread (Delta)
FCV1 / FCV2: individual frequency control inputs, processed by the attenuators FCV1 and FCV2, socket FCV2 is normalised to socket FCV1
FCV: common frequency control input for both filters (~ 1V/oct)

Triangle symbols indicate the normalising of sockets (B1>Mx1, B2>Mx2, In1>In2, FCV>FCV2). The four outputs are inverse labelled.

Technical note:
Ex factory the module is adjusted so that the resonance of the two filters does not reach self-oscillation. If desired the filters can be modified by the user by means of two trimming potentiometers so that self-oscillation is possible.

Dimensions
8 HP
41 mm deep

Notes: Module A-108 is a completely new voltage-controlled low pass filter based on the well-known transistor ladder (Moog ladder). The module has internally an 8-stage low pass filter with different slopes available: 6, 12, 18, 24, 30, 36, 42 and 48 dB per octave. In addition, it features a band pass output (i.e. band pass with transistor ladder). In the factory, the 4 low pass outputs of the A-108 are internally connected to the filter stages 6, 12, 24 and 48dB.

Resonance (Emphasis or Q) can be adjusted manually right up to self-oscillation, in which case the filter will behave like a sine wave oscillator. The A-108 features an external feedback input that enables the insertion of additional modules into the feedback path (e.g. VCA for voltage-controlled resonance or phaser/frequency shifter for phase/frequency shifting effects). The socket is normalized and internally connected to the 48dB low pass output if no cable is inserted into the feedback socket.

The frequency can be adjusted manually, or by voltage control. Three CV inputs (CV1, CV2, CV3) are available. CV2 and CV3 are equipped with attenuators.

The filter audio input is very sensitive so that distortion - if desired - is possible even with normal A-100 levels (e.g. VCO output). Self-oscillation will break off at high distortion levels as the internal feedback signal is drown out by the distorted audio signal. This feature may intentionally be used to create new sounds.

In combination with the Voltage Controlled Mixer A-135 and the Morphing Controller A-144 a filter with voltage-controlled slope can be realized (i.e. controlling the slope from 6dB to 48dB via CV).

Notes: Module A-149-4 generates four triggered random voltages which meet the criteria choosen by several controls.

Manual controls for the criteria selection:
Octave range (manual control "Oct."): this parameter defines how many octaves are covered by the random voltages (0 ... +5V, with "Oct." control fully CCW only 0V are generated)
Grid (6 illuminated radio buttons): this parameter defines the grid of the random voltages:
Octaves (Oct)
Octaves + Quin (Quint)
Chords (Major or Minor chords)
Scale (Major or Minor scale)
Semitones
continuous (i.e. stepless)
Minor / Major (2 illuminated radio buttons): this parameter defines in case of chords or scales if they are minor or major. For all other grids this parameter has no meaning
Sixth / Seventh (2 illuminated separate buttons): these parameters defines if the sixth or seventh is added. Valid only if Oct, Quint, Chord or Scale is chosen as grid.

The output voltages follow the 1V/octave standard (i.e. 1/12 V voltage differenc per semitone) with exception of the Continuous mode. The voltages in this mode are totally random and do not follow the 1V/oct standard (i.e. not a multiple of 1/12V).
The generation of a new random voltage at the output (CV Out 1...4) is triggered by the rising edge of the signal applied to the corresponding trigger input (Trig. In 1...4). The trigger inputs are normalled top down. The minimum trigger level is +2.5V, the maximum level is +12V.

Applications:
random polyphonic structures (in combination with the polyphonic modules A-111-4, A-105-4, A-132-8, A-141-4 and e.g. A-157 as trigger source and A-173-1/2 for transposition of the polyphonic structures)
any application that requires several random voltages
four digital pseudo noise signals when higher trigger frequencies are used

Width: 4 HP / 20.0 mm
Depth: 50 mm (measured from the rear side of the front panel)
Current: +50A (+12V) / -10mA (-12V)

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 Erica Synths Black Ring-Xfade is an extremely versatile module for sound shaping. It consists of two unconventional ringmodulators/waveshapers, a crossfader that works both for audio and CV and a VCA. Unlike conventional ringmodulator that works only with a signal present on both signal and carrier inputs, the Black Ring-Xfade passes through the signal without alteration, if no carrier is present, but low level signals on the carrier input result in unique waveshaping. Add the crossfader between two ringmodulators (or as a separate unit) topped up with the VCA, and you have an amplitude modulation powerplant in 10HP!

Ring1 CV; Ring2 CV
These are the ringmodulator carrier (CV level) level controls. Unlike conventional ringmodulator, this one passes signal unaltered, if RING CV is turned down. With increasing Ring CV level a slight waveshaping turns into proper ringmodulation.

Xfade
This is a manual Crossfade control. This fades smoothly between signals patched into XFADE IN1 and XFADE IN2. The XFADE CV is added to the knob position.

Coupling
Set the Crossfader mode - AC is optimized for use with the audio signals, DC - for control voltages (but it will work fine with audio, as well).

Ring 1; Ring 2
The green LEDs give visual feedback on signal levels, applied to XFADE IN1 and XFADE IN2 respectively.

Vol CV
Select the VCA CV response. A 0-10V setting is intended for use with the envelope generator, a -5V - +5V setting - for nice tremolos with a LFO.

Xfade IN1; Xfade IN2
These are the Crossfader inputs. They are normalled to the Ringmodulator ouputs, so, if nothing is patched here, you can crossfade between two ringmodulated signals.

Xfade CV
This is the Crossfader CV input. The CV is added to the XFADE knob setting.

VOL CV
This is the VCA CV input. The VCA is post-crossfade - it controls the amplitude of a resulting signal after the crossfader. It will also work with low frequency control voltages applied to the XFADE Ins - nice for designing unconventional modulations.

Ring1 Out; Ring2 Out
These are the ringmodulator outputs.

Xfade Out
This is the Crossfader output and the main output of the module.

Ring2 In; Ring2 CV
These are the second Ringmoduator signal and carrier inputs respectively. These two are normalled to the RING1 inputs, and if no signal is patched here, the duplicate the first Ringmodulator. Interesting trick is to set RING CVs at different levels and crossfade between two ringmodulator signals.

Ring1 IN; Ring1 CV
These are the first Ringmoduator signal and carrier inputs respectively.

Fade L; Fade R
The red LEDs indicate the crossfader position.

Xfade CV LVL
This is a crossfade CV level attenuator. By adjusting it you can control a span of fading between inputs.

Specs:
Audio level 10Vptp
CV level (full span) -5V - +5V
Power consumption +38mA, -32mA
Module width 10HP
Module depth 35mm

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: Think of the MFD like a tiny DJ mixer: two stereo inputs, one stereo output, with the option to cue either input and crossfade between the two. A simple idea very well executed.

Supplier's Notes:
Inspired by DJ mixers, the MFD allows you to cue and crossfade between signals. Ideal for live performance as well as jamming out ideas in the studio.

Supplier's Notes:
The 'MFD' is a 2-channel stereo crossfader designed for live DJ-style mixing and jamming in Eurorack. Two mono or stereo inputs are mixed to a single stereo output via direct or voltage control. Additional Cue controls provide preview monitoring of either input pre-mix via dedicated Cue switches and an output.

Voltage control over the crossfade and DC coupling allow for further creative uses such as a high quality stereo VCA or as a mix processor for either stereo audio signals or CV.

The MFD is designed to have very low noise and cross bleed and employs equal power crossfading for smooth constant level blending between signal sources.

Features:

Two channel stereo crossfader with voltage control.
Approx equal power crossfading.
Cue output switches for direct monitoring of either stereo input (pairing well with HPO for headphone monitoring).
Can be used as a high quality stereo VCA.
DC coupled for use with both audio and CV.
Skiff friendly with reverse power protection.
Two year warranty.
Made in England.

Ideal For:

Smoothly blending and monitoring 'tracks' or 'scenes' during a live set.
High quality VCA use for stereo based sources.
Voltage controlled crossfading and mixing of both CV and Audio signals.
Other advanced uses including audio rate modulation, stereo panning effects and a CV controlled FX send.

Technical Specifications

Supply: +12V 70mA / -12V 70mA

Size: 6HP

Depth: 32mm

Notes: ***B-STOCK: Item refurbished, repaired and in perfect working order.***


Erica Synths Bass Drum is developed in collaboration with the French company e-licktronick and it's our take on analogue bass drum circuits adapted for modular systems. Massive, punchy sound, Accent & CV control over key parameters of the module make it distinctively expressive in live performances.

Features
Pitch
Tune
Tune Depth controls
CV control with attenuators over Pitch, Decay and Drive
Manual trigger
Accent for better expression

Dimensions
14 HP
30 mm deep

Current Draw
60 mA +12V
30 mA -12V

Notes: The 'Mega Milton' is a smorgasbord of handy all analogue utilities in just 8HP that will greatly extend the functionality of your Eurorack system.

It includes a stereo line input converter for incorporating line level external sources into a Eurorack system, a fixed 4 input mixer with breakout attenuator for combining signals, a gated slew limiter for adding slides to sequences, a sample and hold with analogue white noise with a myriad of uses such as generative melodies or producing percussive textures and finally a buffered mult for droop free signal distribution with handy LEDs to monitor.

All sections are normalised to help with typical use cases such as generating random CV from the sample & hold section, a smooth random source from the slew output and breaking out a standalone attenuator from the fourth mixer input.

The 'Mega Milton' provides essential classic synthesizer building blocks for patching in any Eurorack system.

Ideal For

Incorporating stereo external sources easily into your Eurorack system.
Signal attenuation and basic mixing in a small space.
Building percussion sounds from an analogue noise source.
Producing clocked random to add interest and variation to patterns and sounds.
Adding gated 303 style slides to patterns.
Creating and Manipulating patterns with Sample and Hold.
Buffering and monitoring voltage across multiple VCOs or other destinations with no drop.

Tech Specs

Supply: +12V 70mA / -12V 70mA
Size: 8HP
Depth: 32mm

Notes: 'MUM M8' is an 8hp Eurorack low pass filter building on the filter design used in the classic Akai S950 12 bit sampler with the addition of resonance, voltage control, clipped saturation and a dedicated VCA.

The low pass filter gives the recognisable super smooth vacuum like tone sucking sound which works magic on complex sources. The addition of clipped overdrive and intentionally aggressive self-oscillating resonance compliment the smooth filter core by juxtaposing it into more wasp like territory with acidic squeals and a more gritty sound.
Mum M8 features dual voltage control with attenuation (and inversion) of filter cut off and voltage control of resonance together with dual audio inputs - one of which includes a VCA to with the capability to aid overdriving signals into the filter core.

The filter core is a 6th Order Butterworth switched capacitor type design featuring an analog core but controlled by a high speed digital clock. This produces the characteristic smooth sounding filter but, as with the original S950, has a relatively high minimum cut off as to avoid 'clock bleed' into the filter output from the digital control. This minimum cut of point (and introduction of bleed if required) can be controlled via trimmers on the rear of the module (see calibration chapter). It is not unusual for there still to be some low-level artefacts from the clock present, particularly during filter sweeps - these add to the filters character.

The motivation for the module came from discussing filters in classic samplers with the artist Jack Adams - aka Mumdance. Jack suggested investigating the S950's filter well known as for it use in classic use in early jungle and hardcore. From that point onward Jack provided inspiration, help and feedback in the development of the filter. Big up Mumdance.

Notes: XFADE 1U is a classic DJ-style stereo crossfader, with a few extra tricks up its sleeve. The 'A' and 'B' sides both have L+R inputs. The crossfader blends two stereo input signals together - crossfading one into the other depending on the position of the slider and the selected XFADE Shape. The blended output appears at the MIX L and MIX R output jacks.

In addition, XFADE 1U can be used as a modulation source for controlling other modules, since the crossfader also outputs control voltages from the CV A and CV B jacks. A switch determines whether these voltages are unipolar (crossfading from 0V to 5V; and 5V to 0V), or bipolar (crossfading from -5V to +5V; and +5V to -5V). The two LEDs indicate the polarity and relative levels of the CV A and CV B signals.

XFADE 1U uses a precision Innofader crossfader submodule, with moving capacitance technology for smooth and precise control. This is the same part found on many high-end DJ mixers.

Features:

Smooth and ultra-low friction Innofader Mini-Innofader module with moving capacitance technology
Stereo or Mono operation
DC coupled inputs and outputs
Three crossfade shapes: DJ cut, Constant Power and Linear
Unipolar or Bipolar CV outputs

Width: 26HP
Depth: 38mm
Power: 48mA @ +12V / 41mA @ -12

Notes: Erica Synths Black VC Clock is the beating heart of your modular system.

The beating heart of your modular system in 10HP.

This module generates several clock signals simultaneously and has some more advanced features like tap tempo, shuffle and divide, both for controlled rhythmic music production and for experiments with high level of uncertainty. You may also find the adjustable and even random duty circle of shuffling and random clock outputs interesting. Bonus feature - the module can be used as a performance time stopwatch.

Erica Black series are high-end modules with unique functionality. Only the highest quality components are used and all inputs and outputs are protected against undesired overvoltage. When designing the Black Series, design and usability was prioritised over module width. Big knobs are assigned to functions that make difference in sound. Together the Erica Black series are a range of modules that make an entire synthesizer.

Technical specifications:

Max input level: -10V - +10V
Clock signal level: 0 - +5V
Clock rate: 30 - 400BPM
CV input level (full sweep): -5V - +5V
Power consumption: 40mA@+12V, 5mA@-12V
Module width: 10HP
Module depth: 25mm

Notes: The Erica Synths Black DADSR (Delay-Attack-Decay-Sustain-Release) is a fully analogue envelope generator that gives you extended control over events in your modular synth. It's a looping exponential envelope generator that has voltage control over each stage of the envelope. An independent Gate Delay section adds extra functionality to design advanced soundscapes, like delayed modulation e ects, wave morphing, etc.

SPECS:
Attack time (with max CV) 0...2,5" (4,4")
Decay time (with max CV) 0...5" (12")
Sustain level 0...10V
Release time (with max CV) 0...4,5" (10")
Gate delay time 0,7"
CV level (full sweep) -5V - +5V
Panel width 10HP
Module depth 30mm
Power consumption 42mA@+12V, 58mA@-12V


ATTACK
Set the attack time of the envelope

GATE
Patch the gate signal here to start the envelope. If nothing is patched here, the gate input is normalled to the gate

DELAY OUT
CV ATTENUATORS
These are CV attenuators for attack, sustain and release stages

SUSTAIN
Set the sustain level of the envelope

GATE DEL
Set the gate delay time

TRIGG
You can retrigger the envelope at any stage by applying trigger signal here. The trigger alone initiates an AD envelope instead of ADSR

DELAY OUT
This is the gate delay output. The gate delay section can be used independently to control other modules in your modular setup

D GATE
If you wish to use gate delay functionality, patch the gate signal here

BP OUT
This is the bipolar output - the CV here is centered against 0V and this output serves as an LFO

EG OUT
This is the envelope generator output

M. GATE
This is the manual gate button. A built in LED gives a visual reference of the output voltage

RELEASE
Set the release time of the envelope

DECAY
Set the decay time of the envelope

LOOP
This is a LOOP switch. When it's ON, the envelope generator outputs a signal for which the rise time is defined by the Attack setting and the fall time is defined by the Release knob setting.

Notes: Everything sounds better with compression - whether you need a bit of extra pressure for your drum sounds or just that extra touch to make your modular mix more nimble and tight, the Erica Synths Stereo Compressor will make your live performances a joy. The module is optimized for percussion sounds and will be a great addition to any Erica Synths Drum module rig. The Stereo sidechain can be used to animate melodic layers on the beat and to truly bring your Basslines to life.

Features

THAT chip-based stereo compressor
DC coupled sidechain
Gain, Threshold and Compression Amount (Ratio) settings
Stereo Link for level detectors
Bypass switch
8 segment output level VU meter

Specs

Audio input level -5...+5V
Threshold -40dB to +10dB
Makeup gain -12dB to +12dB
Ratio 1:1 to 8
Power consumption +60mA, -22mA
Module width 10HP
Module depth 35mm

INPUT LVL; Adjust the input signal level to your taste
GAIN; This knob adjusts the makeup gain of the compressor
THRESHOLD; Set the compressor threshold
COMP. AMT;This knob adjusts the compression ratio
STEREO LINK; Sending hard-panned or significantly different audio levels on the left and right channels into the audio inputs may result in undesired left-right panning on the output of the compressor, because the level detectors on each channel will ensure a different amount of compression. With the STEREO LINK switch on, the level detectors on both channels are merged and the min/max function is engaged. This ensures equal compression on both channels.
PROCESS; The bypass switch allows for turning off the compressor instantly
8 SEGMENT VU METER; 8 segment VU meter gives a visual reference of the output signal
IN L / IN R; These are the L and R audio inputs
OUT L / OUT R; These are the L and R outputs of the module
SIDE IN L / SIDE IN R; These are L and R sidechain inputs. You can process each channel individually
SIDE OUT L / SIDEOUT R; These are the sidechain signal outputs - they are buffered copies of the sidechain inputs

Notes: The Erica Synths Black Low Pass VCF is designed for analogue purists, who take sound design seriously. It's highly stable, 24dB/oct resonant low pass VCF with voltage control over cutoff (two CV inputs, one is with an attenuverter) and resonance. Bonus features are built in post-filter overdrive circuit with user adjustable drive amount and the Black Filter Coupler connector.

When used in combination with the Black High Pass VCF and the Black Filter Coupler, you get a Holy Trinity of VCFs for an ultimate analogue modular system.

Cutoff

This is the main control of the module - manual cutoff frequency adjustment. The incoming CV is added to the cutoff knob position.

Drive

For extreme results, flip the drive switch on! This will apply post-filter drive. You can preset drive level to your taste by adjusting a trimpot close to the switch on the back side of the module.

Reso CV In

This is the resonance CV input.

In Level

Adjust the audio signal level.

Resonance

Adjust the resonance level manually. On settings over 1PM the filter will start to self-oscillate. The incoming CV is added to the resonance knob position.

CV1 Level

This is cutoff CV attenuverter. Adjust the CV level to your taste!

ResoCV Level

Adjust the resonance CV level to your taste.

CV1; CV2
These are the cutoff CV inputs. The CV1 level is adjustable by CV1 LEVEL attenuverter knob, CV2 is applied to the cutoff without attenuation.

Input

Patch your audio signals here.

Out
This is the audio output of the module.

SPECS:
Audio level 10Vptp
CV level -10V - +10V
Filter slope 24dB/oct
Power consumption +25mA, -29mA
Module width 10HP
Module depth 35mm

The Black Low Pass VCF has a hidden feature - the Black Filter Coupler connector. The Erica Synths Black Filter Coupler is a satellite module for the Black High Pass and the Black Low Pass VCFs, and it adds versatile Bandpass and Band Reject filter functionality to your modular system.

Please note, that the Black Filter Coupler works only with Erica Synths modules and you need both Black High Pass and Low Pass VCFs.

Remove the jumper and connect the Erica Synths Black Filter Coupler. 2x5pin ribbon cable is supplied with the Black Filter Coupler module. Use this trimpot to adjust post-filter overdrive to your taste.

Notes: MIXZ is a multi-channel mixing module for mixing audio, CV, and gate signals with excellent linear response and low noise. Balancing a clear visual layout and multiple mixers in a small footprint makes the MIXZ easy to use in a variety of configurations within a modular synth. Its high-quality analog mixing circuitry makes for a great sounding mixer with plenty of headroom, providing a smooth, organic merge of dynamics and excellent separation of mixing sections and channels. MIXZ has three sections:

Mixer A: a low-noise, 4-channel mixer with independent gain control for each channel.
Mixer B: a low- noise, 4-channel mixer with master gain control.
MixBus: a multi-channel mixer that mixes signals from modules utilizing the Tiptop MixBus.

Mixer A and B can be configured as either two independent, 4-channel mixers or as a single 8-channel mixer. If the output of Mixer A is not in use, then Mixer A will be routed internally to Mixer B forming the 8-channel mixer.

Tiptop MixBus is a new method we have developed to mix audio signals through the Eurorack power bus board without patch cables. A little bit of magic, eh? Although this technique is not ideal for a low-noise mix, we found it to be useful for some applications, including mixing our drum modules, which all have a MixBus-enabled output. The result is that your drum modules are always available and mixed on the master out of the MIXZ with a flip of a switch. This will save you time and frees up cables for repatching sound again and again, while keeping the channels of MIXZ free to bring other signals into the mix.

Combining the MixBus with Mixer A and B, the MIXZ sums dozens of channels in only 10HP.

Dimensions:
10 HP
36 mm deep

Current draw:
14 mA +12V
14 mA -12V

Notes: Introducing the HATS808, a drum module that brings the classic TR-808 closed and open hi-hat sounds to the Eurorack modular synth format. This module includes features like independent accent levels, a high-powered gain stage, dual input pulse-shaper, and adjustable Filter Q and VC-Q knobs for additional tuning.
The HATS808 uses six analogue square wave oscillators to create its signature sizzling sound, maintaining the unique metallic character of the original. The original "choke" circuitry is fully implemented but can be disabled if needed. The high-powered gain stage allows for further sound harmonization through distortion and clipping. The dual pulse-shaper circuit ensures consistent sound quality from any pulse source, making the HATS808 an easy and powerful addition to any modular synth setup.

TR-808 is a Trademark of Roland Corp Japan

Size: 8HP
Depth: 14mm
Power: +12V 30ma / -12V 25ma