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Notes: This is a self contained analogue high hat module. This is a Transistor based VCA design. It is influenced by the DR110 drum machine. The original circuit used 4 oscillators to make the metallic audio sound. I added the original 4 oscillator, and an extra 6 oscillator circuit. The 6 oscillator version is doing a double XOR ringmod (internally). You select that by switch.

The 4 oscillator design sounds more crunchy, where as the 6 XOR circuit sounds more polished with sheen. You can blend in the amount of white noise in the mix labeled 'sizzle'.

Internally, the audio is passing through a few high pass filters, making the output sound very high in frequencies.

The module by itself is not exciting. But in the mix, with other percussion modules, this is your favorite-go-to module. It sits almost perfect in the mix.

There are two triggers. One is for 'Open' sound. The other is for 'close' sound. Both open and close have there own decay knob to adjust the length of the audio tail.

There is a tone control, labeled LPF. Use this to taper off some of the high frequencies.

Instead of adding an 'accent' control. Both triggers have been made to voltage variable. 5V triggering is the normal expected input. So a 3V trigger will sound softer in volume. 10V trigger signals will sound louder.

This module is as simple as it gets, just patch your Arturia Beat Step Pro and use the drum track.

Features

-Both trigger inputs are voltage variable. You can get softer audio, with softer trigger voltage.
-2 voice metallic noise generator
-2 decays (open and close)
-2 Flavors select by switch.
-Normal mode, and Sustain mode, selected by switch.
-frequency adjustment of the internal XOR ringmod.
-classic roland sounding transistor based VCA.

Why get this module over the Shimm module, or other high hats modules?

-Ease of use, ready to go. No sound exploring needed.
-Want the classic transistor based, crunchy sound.
-lower budget
-Sits very well in the drum mix.

Dimensions
8 HP
32 mm deep

Current Draw
21 mA +12V
13 mA -12V

Notes: The 4VCLFO is four LFOs with triangle Outputs in 10hp. It features a knob for the Frequency of each LFO and CV inputs with attenuators.

The "Aux" input is normalized to the four CV inputs, so you can modulate all LFOs with one signal at the same time. Plugging a cable into the CV input breaks its connection from the aux input.

This way you can create more interesting Modulations for your Patches.

You can easily customise LFO speeds to your liking by changing capacitor values on the back.

Features:

- Size: 10hp
- Single SMD Pre-soldered PCB design
- 10 pin power
12 mA +12V
12 mA -12V

Notes: The Exhaust adds many features to your Engine V2 VCO module like Sub-octaves, Mixing and a Gate / Trigger generated by the Chaos signal.

You can select one of the two VCO cores of the engine to Produce Square Waves one and two octaves below the Oscillators frequency. You can blend between -1 and -2 octaves and Set the volume they are Mixed into the Main "Mix" output.

The knobs "VCO1" "VCO2" and "AM" set the level of the selected waveform of each VCO and the AM output from the Engine to the Main Mix. The "Ext In" Input is normalled from the RM output, but you can plug in any other signal to go to the Main Mix.

The V Ref sets a Voltage between 0V and +10V which compares against the Chaos signal from the engine (Chaos attenuator on the Engine doesn't matter). Whenever the Chaos signal is higher in Voltage than the Knob setting, It will Give you a Gate or Trigger signal depending on the switch. There is also a CV input, which offsets your V Ref and can create interesting Rhythms.

Features:

Two Sub-Octave generator with selection switch, Mix knob for -1 and -2 octaves (marked as /2 and /4)
5 Channel Audio Mixer for 4 different Outputs from the Engine and level for the Sub-Octave generator
External Input for Mixing with other signals
Semi-Random Gate or Trigger Output generated by the Chaos signal
Audio-optimized Chaos Output
Separate Outputs for Sub-Octave and Main Mix

Dimensions
8 HP
24 mm deep

Current Draw
6 mA +12V
5 mA -12V

Notes: VCFA - Voltage controlled Filter and Amplifier

The CubuSynth VCFA is a multimode VCF with LP,HP and BP modes with integrated VCA, CV control over Frequency, Resonance and Volume.
The CV input for the Frequency features 1V/Oct scaling over about 2~3 octaves. So you can even create plucky melodies
with the resonance in "ringing" mode.
The Gain control can reach a nice, soft saturation.

Key features

- 3 simultaneous outputs for Low Pass, Band Pass and High Pass
- Integrated VCA on input stage
- Input saturation on upper Gain levels
- CV control over Volume, Frequency and Resonance
- Frequency CV scalable for 1V/oct signals (stable up to 2-3 octaves)
- "ringing" appears on upper Resonance levels

Specifications

- Size: 10HP x 3U / 50mm x 129mm
- Depth: 34mm (measured from the front panel)
- Max. Current Draw:
+12V: +14mA
-12V: -14mA

Notes: The CubuSynth ADSR Module is a VC looping envelope generator, with controls for the Attack, Decay, Sustain and Release stages, for overall Time of the envelope and CV inputs for Time and Level.

The EnvGen8 chip was written/designed by Tom Wiltshire aka "Electric Druid".

1 ATTACK (1ms - 10s)
Sets the time, the Envelope takes to reach full level from the moment a gate is detected (Key is pressed)
2 DECAY (1ms - 10s)
Sets the time, after the envelope hits full level, to fade to the level set by the SUSTAIN Knob.
3 SUSTAIN (0% - 100%)
Sets the Volume to stay after the decay, while the GATE input is high.
4 RELEASE (1ms - 10s)
Sets the time for the fade out on falling edge of the GATE input (after the Key is released)
5 MODE switch
Select between exponential and linear curves.
6 PUNCH switch
Adds extra thump to very short percussive envelopes
7 LOOPING MODE switch
Allows selection between three different modes of operation. Gated mode is a normal envelope. Gated Looping will
trigger the ATTACK stage when the GATE goes high, then continue looping whilst the GATE remains high, and will
RELEASE to zero when the GATE goes low. The LFO Looping mode loops continuously and ignores input from the
GATE.
8 TIME (x1 - x100)
Overall Time control which shortens the length of the entire envelope.
9 TIME CV Attenuator
Attenuates incoming CV for Time modulation. Higher voltages will shorten the
length of the envelope.
10 TRIG Input
Re-trigger for the envelope. Useful for Polyphonic patches. Envelope goes to
ATTACK stage on rising edge of 0-5V pulse while Gate can still be on.
11 GATE Input
Normalized to TRIG Input. Envelope goes to RELEASE stage on the falling edge.
12 Level CV Input
Control the overall Volume of the envelope. Can be used for velocity control.
If nothing is plugged in, the Volume stays on max.
13 OUT
CV-output of the envelope (0 to +5V)
14 LED
Indicates the output voltage.
15 TIME CV
CV Input for Time modulation. Higher voltages will shorten the length of the
envelope.
16 INV. OUT
Inverted voltage of the output CV (0 to -5V)

Dimensions
10 HP
25 mm deep

Current Draw
16 mA +12V
16 mA -12V
7 mA 5V

Notes: The mmMidi is a simple & compact MIDI to CV interface for your Eurorack synthesiser. It translates both MIDI clock and 2 Channels of MIDI note, velocity and gate information to corresponding voltage control signals. The mmMidi is quick to set up and requires minimal configuration.

Notes: PRO Expanders:

Extra Pam Outputs.

ALM034-EX

PPEXP1 & PPEXP2 are two expander modules for Pamela's PRO Workout that both offer additional dedicated fixed clock, Din Sync & MIDI clock outputs.

Extend Pam as a master to clock external gear with super solid dedicated MIDI & Din Sync clock outputs. The Din Sync clock (x24) and Run outputs can also be patched into a 2nd Pam to easily sync it.

Use the extra fixed clocked gate outputs to free up Pam's main outputs for unique sequencing or complex modulation duties.

Connects directly to and is powered by the 'MIDI-EX' expander header on rear of Pamela's PRO Workout.

Only a single output expander is supported at any time but either can be used alongside an AXON-1 CV input expander.

A MIDI adapter cable and a Din Sync adapter cable are both available for connecting to 5 pin 'Din' type connectors. The PPEXP 1 includes a MIDI Din adapter cable.

Technical Specifications

Power: Additional approx +12V 40mA (PPEXP1) / 20mA (PPEXP2)
Size: 4HP & 2HP
Depth: 32mm

Notes: The ‘Pip Slope’ (rev II) is a compact envelope and function generator. It supports both Attack/Decay and Attack/Sustain/Decay type envelopes with both direct and voltage control of Attack and Decay times. Envelope shapes can be morphed between exponential, linear and logarithmic type slopes. Envelopes can be made to loop, repeating infinitely or decreasing with time or amplitude for echo and bouncing ball type effects. An ‘End of Cycle’ trigger output further extends the envelopes functionality for both clocking and burst or fill type effects.

The improved Pip Slope adds a number of new features and updates over the original Pip whilst keeping the same size. Improvements include increased output resolution, finer control of fast envelopes, a new morphing shape control, switchable 5v or 8v maximum envelope level, additional loop modes and an additional trigger output.

Features:
Compact envelope and function generator in 4HP.
Trigger and gate inputs.
Voltage and direct control of attack and release times.
Snappy or super long envelope times – ranging approx 1ms to 7 minutes per stage.
Optional self looping ability with 3 different loop modes: Decreasing amplitude, decreasing time, and regular loop.
Shape control that morphs the envelope shape from logarithmic to linear to exponential curves.
End of Slope trigger output that fires a trigger at the end the envelope or loop cycle.
Selectable 5v or 8v max envelope level output.
Reverse polarity protection.
Skiff friendly.
Designed and Made in the UK.

Technical Specifications
Supply: +12V 30mA / -12V 10mA
Size: 4HP
Depth: 38mm

Notes: This small utility is the pedal's lover best friend, it allows 2 diferent chains of pedals to be independently connected to your synth.

The Send channels attenuate the synth level to instrument level.

The Return channels amplify the signal from instrument to synth level.

Specs:
- Width: 4 HP
- Depth: 3 cm
- Max current: 10mA

Notes: Sometimes your ears are not enough and you really need to see the sounds and control voltages you are generating. Zeroscope's two channel design lets you display and compare both control voltages and audio. It's a good old fashioned sci-fi light show!

The Zeroscope 1U is an adaptation of the excellent 3U Zeroscope by VPME.DE.

Three Modes Packed Into 1U:

- Scope: Standard graphical display, with time displayed on the X-axis and voltage displayed on the Y-axis.
- X-Y: Alternate graphical display with CH 1 driving the X-axis and CH 2 driving the Y-axis.
- Tune: Alphanumerical tuning display, which you can configure to show either Hz values or note names.

The Scope displays have adjustable display offset for each channel and an adjustable trigger threshold, while the tuner has options for reference pitch and average update speed.
Ins & Outs

The inputs are DC coupled and accept signals between -10V and +10V. The Signal on the input is normalled to the output below; this allows you to monitor or tune a signal without a mult or re-patching.

Notes: Module A-101-8 is a 8-stage phase shifter which uses light-sensitive resistors (LDR) and is a replica of the Compact Phasing A manufactured by the company Schulte in the seventies. The actual phasing circuit is identical to the historic model. Only the illumination control of the LDRs is different: the A-101-8 uses LEDs to illuminate the LDRs, the historic model used incandescent miniature lamps. And the A-101-8 has no built-in LFO but can be controlled by any external control voltage source (e.g. LFO, ADSR, random, Theremin, ribbon controller, sequencer, midi). The phasing offset (i.e. the base value for the phase shifting) and the modulation depth of the external control signal can be adjusted separately. The Compact Phasing A had no offset control but only a depth control for the built-in LFO. Feedback and mixing ratio of the output signal are set by two controls. The audio input is equipped with an attenuator. The module has two audio outputs available (same as the historic model) and a visual display of the phase shifting.

The module has these controls and in/outputs available:

Control Man. : manual control of the phase shift offset (base value)

Control CV: attenuator for the signal applied to the CV socket

Control Feedb.: Feedback or Resonance (similar function as filter resonance/feedback/emphasis)

Control Mix: sets the mixing ratio between original and phase shift signal appearing at output 1

fully CCW: only the modified input signal appears at output 1 (see note below *)

center: a mixture between the modified input signal and the phase shift signal appears at output 1, that's the standard position for the classical phasing effect

fully CW: the pure phase shifted signal appears at output 1 (e.g. for vibrato effects)

Control Input Level: attenuator for signal applied to the In socket

Socket In: audio input

Socket CV: control voltage input

Socket Out 1: audio output 1 (mix signal)

Socket Out 2: audio output 2 (modified input signal)

LED: visual control of the phase shift

The module has some peculiarities (same as the historic model):

The input signal is processed at first by a pre-stage which outputs a "modified" input signal (*). This signal is not processed by the phase shift stages but is affected by the feedback setting. Only when feedback is set to zero this signal is identical to the input signal. Otherwise it contains feedback components.

This signal is output on socket Out 2.

When both output sockets Out 1 and Out 2 are used as stereo channels one obtains a spatial stereo sound effect.

The same signals is also used for the CCW position of the mix control. With mix control fully CCW the unmodified signal appears only if the feedback control is set to zero. Otherwise it contains feedback components.

The historic model had two audio inputs: one 5-pin DIN socket and a 1/4" jack socket. The DIN socket was intended for high-level line signals. When the 1/4" jack socket was used the amplification of the pre-stage increased by about 100. The 1/4" jack socket was intended for low level signals (e.g. electric guitars or microphones). For this feature the A-101-8 has an internal jumper that can be used to increase the amplification. As long as the module is used within the A-100 system usually the lower amplification is used to avoid distortion.

The 8 photo resistors and LEDs are assembled within an small lighproof box. In addition the pc boards are made of lighproof black material to avoid interfering light from other modules or the bus board.

Dimensions
4 HP
45 mm deep

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

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: 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: 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: 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: Module A152 is a very useful switching and T&H module. It combines a voltage addressed 1-to-8 multiplexer and 8 fold T&H that can be used as kind of an analogue shift register too. The active in/output is displayed by a LED. The digital output of the currently addressed step outputs "high". The remaining digital outputs are low.

Instead of voltage control even clock/reset controlled addressing of the active step is possible. The rising edge of each clock signal causes an advance to the next state. The rising edge of the reset signal resets to step 1.

The sum of the voltages coming from the manual Address control and the CV input define the currently addressed step of the 3 sub-devices. If the module is controlled by clock and reset the control voltage has to remain unchanged as the CV control has priority over the clock/reset control (e.g. simply turn the CV control fully counter-clockwise and do not touch the Address control knob).

Sub-device #1 is the bidirectional 8-fold multiplexer (kind of an electronical 8-fold rotary switch). Bidirectional means that it works into both directions like a mechanical rotary switch: the common socket may work as an output that is connected to one of the 8 inputs that are e.g. connected to modulation or audio sources. But the common socket may even function as input. In this case the signal applied to the common socket is output to the currently addressed single socket. The voltage range of the in/outputs to be switched is the full A-100 voltage range -12V....+12V. All A-100 signals can be switched without any restrictions.

Sub-device #2 is the addressed 8-fold T&H. The signal at the common T&H input is connected to the addressed T&H output. As soon as a new output is addressed the last voltage is stored at the output (Track&Hold function). The T&H section of the A-152 allows the emulation of the "toggling T&H" function of the Buchla module 266 "Source of Uncertainty". Only the first two T&H outputs of the A-152 are required for this application. This unit can be used also as kind of an analogue (shift) register. The difference to a "real" analogue shift register is that the sampled output voltages are not shifted to the next output but remain allocated to the same output. But in some cases (e.g. controlling the pitch of 3 VCOs by 3 output voltages of the A-152) the result is the same.

Sub-device #3 is the digital output section. The digital output of the currently addressed turns to "high". All other digital outputs are low. The digital outputs can be used to trigger e.g. envelope generators or to control the reset input in the clocked mode to reduce the number of addressed stages.

Notes: Clever four-channel utility module designed to make it easier to achieve perfect oscillator tracking and transpose CV signals. Also includes some neat quantising and portamento features.

Supplier notes:
The CalTrans solves issues encountered when playing tonal music with a modular system: tracking problems, curves unrelated to Volt per octave ratio, limited octave range, cumbersome transpose, ...

The CalTrans corrects and expands the range of troublesome VCOs and brings V/Oct tracking to anything that oscillates.

Besides calibration, the CalTrans offers live play features. Each channel can be quantized and any combination of them transposed jointly.

A pair of rotary encoders with detent allow an precise selection of octaves and semitones.

VCOs whose tracking doesn't go high enough to follow the leader will see their pitch repositioned in their highest possible octave so that the global harmony is unaffected.

You can add a pinch of portamento and glissando to each channel and save the whole in user presets.

Notes: A-135-2 is a miniature version of the A-135-1. Behind a front panel with 8 HP only four linear VCAs (voltage controlled amplifiers) and a voltage controlled mixer based on the VCAs are available.

Controls, In/Outputs and Functions of each VCA:

- Level (manual control of the VCA amplification), small rubberized knob (L1...L4)
- Control voltage input with associated attenuator (CV1...CV4), for the full VCA control range about 0...+5V control voltage are required (attenuator fully clockwise), for higher control voltages the attenuator is used, the attenuators are without knobs, just plastic shafts with white marker
- Signal Input
- Signal Output
- All inputs and outputs are DC coupled. Consequently the VCAs can be used to process both audio and control voltages (e.g. to control the level of LFOs or envelopes)
- The signal input is not equipped with an attenuator. But the VCAs can process all signals up to 15Vpp / -7.5...+7.5V without clipping. In case of higher levels an external attenuator is required (e.g. A-183-1).
- The available amplification range is 0...1, the maximal amplification is 1 (i.e. it "clips" and remains at 1 even if the control voltage goes beyond the value that corresponds to amplification 1)

Functions of the voltage controlled mixers:

- Two outputs ("Selected" and "All")
- Selected output: the ouput if a VCA is removed from this sum signal when a plug is inserted into the corresponding VCA output.
- All output: sum of all VCA outputs, regardless of inserted plugs into the VCA outputs
- The maximal amplification is about 0.6 to avoid clipping at the mixer outputs (otherwise the outputs may distort with 15Vpp signals at each signal input and full amplifications)

Special functions of the voltage controlled mixers (selectable by internal jumpers):

- Dual Stereo VCA: In this case the control unit of VCA1 (L1 + CV1) affects also VCA3 and the control unit of VCA2 (L2 + CV2) affects also VCA4, the control units of VCA2 and VCA4 are out of operation
- Quad VCA: In this case the control unit of VCA1 (L1 + CV1) affects all four VCAs. The control units of VCA2, VCA3 and VCA4 are out of operation. In this mode the module has the same function as module A-132-2. That's why module A-132-2 will be discontinued.
- Normalling of the signal inputs: by means of internal jumpers signal input 1 can be normalled to signal input 2, signal input 2 to signal input 3 and signal input 3 to signal input In 4. That way the same input signal can be distributed to four different channels by means of control voltages (e.g. quadrophonic distribution of audio signals). Suitable control voltage sources are e.g. A-144 (Morphing Controller) or A-143-9 (Quadrature LFO).

Notes: Pico Drum2 is compact yet versatile percussion synthesizer in a 3 HP eurorack module. It features 8 drum synthesis algorithms created to deliver distinct sounds to your modular system. Each algorithm offers a lot of flexibility therefore a big sounding bass drum and a squelchy snare can be dialled in within the same algorithm. It also tracks 1V/Oct and all parameters can be mapped to the CV1 input.

Technical specifications:
Output level: 10Vptp
CV level (full span): -5V - +5V
Power consumption: +28mA, -5mA
Module width: 3HP
Module depth: 35mm

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: 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: 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: FONT is a massive sounding liquid filter- designed to bring you powerful basslines, tons of FM modulation and a clean resonance over your audio path.

It features two simultaneous outputs:
2-pole Low Pass
2-pole Band Pass

It can also work as a sine oscillator, tracking 1V/OCT when the resonance is at its maximum level.

FONT can be used to make basslines, acid patterns thanks to its organic and musically sounding resonance.

Ping it to produce percussion sounds such as, bongos, congas or toms.

Applying a pitch envelope, it really shines as a kick-drum machine!

22 mA +12V
25 mA -12V
0 mA 5V
15 mm deep
O 4.60 (10 Votes) Average Rating

Notes: A simple noise generator and 4 band fixed filter bank.

The noise is normalled to the Filterbank input. The cutoff frequencies are matched to the Bark Filter, so that four bands of the Bark Filter correspond to a band on the Noise & Filter.

It is a small and quick noise source and pairs well with Scan & Pan and Amp & Tone.

HP : 4

Notes: HN VCF is a state variable filter having 12 db Low Pass, 12 dB High Pass, 6 dB Band Pass plus 18 db Low Pass marked as "LP!", because it has extra drive. All three parameters: "Freq", "Resonance" and "Drive" have dual knobs with outer knobs controlling bipolar CV amount. These affected CVs are then shown by the relative green/blue LEDs.

The possibility to have CV over "Resonance" and "Drives" makes it a very capable 6 HP filter.

"LP!" output has 6 dB steeper slope (18 dB) compared to ordinary 12 dB "LP" output. Plus it has much more drive.

Dimensions
6 HP
35 mm deep

Current Draw
55 mA +12V
65 mA -12V

Notes: WarpEx is an expander module that adds polyphony and MIDI to Warp.

- 4-Voice polyphony
- MIDI input and MIDI Thru
- MPE compatibility (MIDI polyphonic expression)
- Dedicated trigger and V/Oct inputs for each voice
- Illuminated pushbutton to quickly toggle between the MIDI voice modes: Mono, Poly and MPE.

Inputs:

- +/- 8 Volts (V/OCT)
- 0.0 Volts to +5.0 Volts (TRIG and MIDI)
- Overvoltage protection on all jacks.
- 4 TRIG Inputs: Gate inputs for Voices 1-4
- 4 V/Oct Inputs: CV input for pitch of voices 1-4 (i 8V, up to low audio rate ~100Hz)
- 1 MIDI In: Input Type-A for Midi signals. Use provided MIDI-to-DIN adapters.
- Button Toggles between MIDI voice modes: Red = Mono, Blue = Poly, Purple = MPE (Poly)

Outputs:

- Midi-Thru, 5v signal

WarpEx is fully managed by the Warp master

Scope of delivery:

Module, 3mm screws, ribbon cable for connection to Warp, 2 Midi-to-Din adapters Type A

Power consumption: Warp powers this expander via the included grey bus cable
Depth: 30mm
HP : 4

Notes: An accurate Manual Voltage Source.

Voltio fits somewhere between a music tool and a piece of electronics lab gear.

It generates voltages equivalent to all the notes on the 12-tone equal temperament scale throughout a ten-octave range, with an intuitive two-knob interface.

The Precision Adder In, lets you sum Voltio's Out with external voltages.

Additionally, the front panel banana connectors let you plug standard multimeter probes for hands-free operation on electronics lab.

Use it to transpose Oscillators and sequences in a musical way or as a reference to calibrate your analogue gear.

Features:

Easily adjust your oscillators in known intervals.
Transpose Musical phrases from sequencers, arpeggiators, or any other notes source.
Calibrate oscillators and filters on your DIY projects or during analogue gear maintenance.

Specs:

Current needs: +12V: 35mA, -12V: 15mA
Width: 6 HP
Depth: 30mm including power connector
Designed, kits prepared and assembled in Barcelona.

Notes: Loop is a high fidelity looper with four unique recording modes and an intuitive user interface. It can capture up to five minutes of audio with reverse, and half-speed playback accessible. Each recording can use one of four modes: Sound on Sound, Dub, Replace, and Infinite (i.e. Frippertronics). Whether you're looking for minimal part layering, or full blown ambient soundscapes, Loop will take your patch for a ride.

High fidelity audio - 24-bit, 48kHz with five minutes of recording time
Four recording modes: Sound on sound, Dub, Replace, and Frippertronics
Intuitive interface
Half speed and reverse playback

Tech Specs:
Width: 2HP
Depth: 42mm

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: 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: Erica Synths Pico DRUM1 module gives you two independent and great sounding drums with versatile control over different parameters and a huge collection of drum samples.

Features:

2 independent drums
64 samples for each drum
USB interface for user samples upload
Independent control over Pitch, Decay and Level for each drum
Independent control over Pitch, Decay and Level for each drum
Separate triggers for each drum
Audio output of mixed drum sounds
Exclusive switch to select how the two drums interact with
Each other when triggered at the same time
12bit resolution, 44kHz sampling frequency

You can chain up several Pico Drums and get one of the smallest modular drum setups in the modular world!

With Pico Series we challenged ourselves - can we make ANY superior functionality synth module 3HP wide and affordable? Yes, we can.

Technical specification:

Resolution: 12 bit
Sample rate: 44 kHz
Power consumption: +35mA, -15mA
Module width: 3HP
Module depth: 35mm

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: Inspired and officially licensed from Teia's Stochastic Function Generator which was introduced in 2013 but is no longer available. This earlier version served as an inspiration, but with a completely rebuilt and reprogrammed mcu to a fully featured 4 voice 2 stage envelope and slew generator.

ADDAC System ADDAC506B VC Stochastic Function Generator Expansion Module (black faceplateADDAC System ADDAC506B VC Stochastic Function Generator Expansion Module (black faceplate
This expansion allows extra I/O to the ADDAC506, namelly:

Four trigger inputs for the random engine.

Four CV random outputs from the random engine.

Notes: 3xVCA offers three high class amplifier circuits with linear characteristic. Thanks to AC / DC compatibility, a very low noise floor and basically no distortion, the module is not only a great partner for control voltages, but audio material as well. Besides a signal input and output, each VCA has its own CV input. The dual potentiometers regulate levels and bipolar CV attenuation values of all amplifiers. Using these rather unusual, yet very practical components, it was possible to equip the 3x VCA with a front panel that is only 6 HP wide. Switches allow the user to feed the results of one amplifier to the output of the next amplifier, so we can get 1+2, 2+3, and 1+2+3 outputs mix. Two-colored LEDs visualize CV and output signals.

60 mA +12V
60 mA -12V
35 mm Depth

Notes: The Octave Fuzz is SynthRotek's take on the classic 70's SuperFuzz circuit, made into a Eurorack module, which has improved on some aspects of the original as well, including an increased output.

Two distinct voices like the original: switchable between scooped midrange and massive midrange bump.

Aggressive: It will sound massive and in-your-face like no other circuit can. This is for sonic explorers and heavy music only. In short, it's not useful for EVERYTHING, but the things it DOES do it excels at. Sounds especially killer for keyboard and bass sounds.

Tuned to give a subtle distorted waveform one octave up via wavefolding (see the video to view this on an oscilloscope). (Completed modules come pre-tuned; there are calibration instructions at the end of the assembly instructions for the kits)

This circuit has been optimized for Eurorack. You can find a guitar pedal version here.

Current Draw:
32mA @ +12v
24mA @ -12v
0mA @ +5v

Notes: The Hungry Robot Sample & Hold provides basic S&H functionality with some added bells and whistles. It uses an internal clock dialed into a very useful range. If the internal clock rate is not to your liking, you can bypass the Rate knob by patching a clock signal into Clk In. The Sample & Hold has a built in attenuverter giving a bit of added control over the random voltages that are outputted. White noise out for uses elsewhere. Traditionally a S&H samples voltages from chaotic white noise, but E.In allows you to bypass the white noise and patch in your own sample source (i.e. patching an LFO in for a bit crushed LFO). As with all Hungry Robot "Modular Boxes" the Sample & Hold can be powered with a simple 9V DC, Negative Center power supply.

KNOBS
-MINUS/PLUS: Attenuverter for output. Allows you to sweep between positive and negative voltage outputs.
-RATE: On board clock source ranging from approximately 25ms to 1000ms.

PATCH POINTS
-E.IN: Bypasses internal white noise as a sample source. Patch in any CV source that you want to sample from
-STATIC: Taps into white noise output (0-5V range)
-CLK IN: Bypasses internal clock with your provided external clock
-S&H OUT: Two buffered outputs of S&H voltage

Dimensions: 4.7" x 2.6" x 1.5"
Power: 9V DC - Negative Center - 2.1mm Barrel

Notes: Lovely little mono filter module in a compact desktop format. Based on the classic Prophet 5 filter, ideal for processing synths and signals, hooking up to Eurorack or other Hungry Robot modules.

Supplier's Notes:

The Hungry Robot VCF is an all analog, 4-pole low pass filter with a self-oscillating resonance control. It is a close replication of the filter circuit found on the famous Prophet 5. It uses a HM2040 which is a high quality, faithful replication of the original SSM2040 chip. This resonant filter has a beautiful tonal quality. The over-sized knobs provide a satisfying tactile response. The cutoff frequency can be controlled by external control voltage. It has a built-in attenuator and invert switch for the incoming CV. CV input does not track at 1V/Oct, but is scaled to act as a VCA when a 5V signal is applied to CV input. As with all Hungry Robot "Modular Boxes" the VCF can be powered by a simple 9V DC, Negative Center power supply.

KNOBS
-FREQUENCY: Sweeps the cutoff frequency of the filter.
-CV: Attenuator for incoming CV input.
-RESONANCE: Sets resonance of filter. Small volume drop is to be expected. Will self-oscillate at higher settings.

SWITCHES
-INVERT: Inverts the incoming CV input. Toggle to the right to invert incoming CV

PATCH POINTS
-IN: Patch Audio Signal In
-CV: CV input for Frequency. Allows for CV control of this parameter.
-OUT: Patch Audio Signal Out

Dimensions: 4.7" x 2.6" x 1.5"
Power: 9V DC - Negative Center - 2.1mm Barrel

Notes: SOLINA, an emulation of the 70ies string machines!

The SOLINA module is based on th excellen work of Jan Ostman, who has developed a very good digital based emuation of the sound of the string synths that were popular in the music of the 70ies and 80ies, like ARP Solina (who gave this module it's name), Logan String and others.

Their unique sound is based on several, minor detuned sawtooth oscillators and an ensemble effect.

This module produces chords, which can be shaped in different ways, like selecting the base scale (minor, major), adding the 7th or a bass note and different variations of the chord. The sound can be shaped with a variable oscilator spread/detune, adding a phaser/ensemble and a tone knob for choosing the overall character between bass focused to only higher parts of the sound.

Notes: ADSR is a four stage linear envelope with two expressive ranges. Each stage can be modified independently allowing for the creation of complex, multi-segment envelopes. Great for modulating filters, VCAs, and oscillators.

Notes: Arp is a gate-driven arpeggiator with a multitude of chord types and playback modes. Voltage control over both root note and chord type allow for sequencing any combination of chords in any key imaginable.

With the rate of the arpeggio and reset capability in your own hands, you're free to create dynamic rhythmic melodies from your favourite chords. Take your tonality for a ride with Arp.

Notes: Div is a 2 channel, voltage controlled clock divider and multiplier. Incoming clock signals can be multiplied or divided by a factor of 16 with a multitude of values in between.

CV inputs provide external control of the current clock rate, allowing for the creation of dynamic rhythms from a single clock signal.

Notes: Mix is a 4 channel mixer that is great for audio or control voltage signals. Up to four inputs can be combined to a single output each with its own level control.

Notes: The 2hp VCA is a dual, linear VCA. It uses the renowned 2164 SSM architecture, giving it extremely low distortion and high quality audio outputs. With a CV input attenuator, and DC-coupled inputs this is your new go-to module for voltage controlled amplification of audio or CV.

Notes: Verb is a lush stereo reverb with a full feature set and superior audio quality. A wide range of reverb times take your sound from small room to never-ending concert hall.

CV over mix allows dynamic movement between the dry and reverberated sound, and the dampening control lets you dial in the perfect timbre for the wet signal. Whether you need a traditional reverb for an FX send or an esoteric sound design tool, Verb can take you there. Get lost in space with Verb.

Notes: Erica Pico Quant is advanced CV quantizer with some unique features - quarter tone accuracy and the web-based interface for creating user generated scales.

- 8 preset scales
- Web based interface for user generated and extra preset scales
- Microtonal quarter tone scales
- Adjustable tolerance
- Adjustable CV glide between notes
- Clocked and independent quantization

Dimensions
3 HP
35 mm deep

Current Draw
25 mA +12V
6 mA -12V

Notes: Erica Synths Pico VCO is a great, deep sounding VCO with 32 selected waves: classical, fattened with sub-oscillator, FM synth and others.

Features
2 banks, 16 waves each
VCO/LFO mode
Voltage controlled wavesurfing
Wave morphing in LFO setting
Typically you would need several rather expensive modules to generate similar sounds, besides there's an extra feature: flip a switch, and you have a versatile LFO.

With Pico Series we challenged ourselves - can we make ANY superior functionality synth module 3HP wide and affordable? Yes, we can.


Technical specification:

VCO frequency range: 30Hz - 5kHz
LFO frequency range: 0,1Hz - 20Hz
1V/Oct input signal amplitude: 0V - +10V;
Output amplitude: 10V ptp
Power consumption: +26 mA, -4 mA
Module width: 3HP
Module depth: 35 mm