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Notes: The Dual Stereo Gate (DXG) music synthesizer module is a Dual Stereo Low Pass Gate and Mixer. It follows in the footsteps of the QMMG, Optomix, RxMx, DynaMix, and LxD. Unlike its predecessors, the DXG is specifically oriented around mixing stereo signals, making it an important addition to any system containing modules like XPO, QPAS, Morphagene, Mimeophon, and other stereo modules by Make Noise or others.

Unique to the DXG is a new low pass gate circuit that does not use vactrols. This circuit is 100% analogue and its response was arrived at after many months tailoring it to meet or exceed the expectations that have been set by all the vactrol low pass gates that Make Noise has created over the years.

In the past, Make Noise produced the Dynamix module and Dynamics circuit in the 0-COAST, both of which are vactrolless LPGs; however, the DXG is a completely new approach which better implements the gentle single pole filtering of a low pass gate, while also emulating the slow decay and memory of the vactrol based low pass gate. This new circuit makes possible the consistency of response necessary for versatile stereo use, while also keeping the module small and affordable so that it can be a key part of just about any modular system.

As on all of Make Noise's low pass gates, the DXG's Control parameter is used to set both the amplitude and the frequency content of the sound that passes through it. The control parameter tends to open faster than it closes, imparting a subtle decay phase onto any envelope shape that is used to modulate it.

Unlike previous low pass gates made by Make Noise, all the DXG's inputs and outputs are stereo. Each set of inputs is normalled so that the left input can be used for a mono signal, sending a copy to both left and right outputs. The Auxiliary inputs are also a stereo pair with mono normalization. These normalizations allow for the DXG to be used as a simple three channel stereo mixer, with one or two of the channels additionally being used for dynamics control and note event generation. The Aux inputs can be used to chain together larger decentralized mixes using additional DXG modules, or X-PAN, Optomix, modDemix etc.

Features

- Make Noise's first Stereo Low Pass Gate

- Vactrol-free design for classic Low Pass Gate sounds, but with the balance and consistency needed for true Stereo

- Fully Stereo i/o for easy integration into a Stereo-equipped modular synthesizer

- All Left inputs normalled for easy use with Mono signals

- STRIKE Input allows use of Gate signal to trigger Low Pass Gate circuit, creating "plucking" or "pinging" sound from any Gate

- Summing stage with Stereo AUXiliary IN allows for chaining of multiple units, creating larger mixes

- Part of a decentralized mix console integrated throughout the system along with X-PAN, Optomix, XOH, etc.

- Pairs well with XPO, QPAS, Morphagene, Mimeophon, Spectraphon etc.

Width: 8hp
Power:
74mA @ +12V
86mA @ -12V
Module Depth (incl power cable): 43mm

Notes: Fully redesigned from the original Cosmix, the Cosmix Pro is an eight-channel mixer intended to work nicely for performance as well as production. Suitable for line-level stereo signals as well as Eurorack levels.

Supplier's Notes:
A completely new design, with a lot of attention to sound quality, with a clean, low noise signal path, and lots of headroom.

It features the same amount of channels as the previous Cosmix, 4x mono in, and 2x stereo in.

There's one mono aux bus, and an additional true stereo AUX for all channels, with a dedicated mono and stereo return.

Each channel has a pan pot, a big push button for clickless muting, and a dedicated LED level meter to visualize channel output level.

The mono channels come with a handy low cut switch. (-3dB @80Hz / -6dB @ 45Hz)

The stereo channels have an optional +18dB gain, allowing you to easily mix in line level external gear.

The two stereo channels also have a CV input for voltage controlled panning.

There are connectors on the back for daisy chaining, or for connecting to future expanders/other mixer units.

High quality aluminium panels, available in black or silver.

The older model Cosmix is discontinued until further notice, since the parts for the drive circuit are unobtainium.

That's also the reason there is no dedicated drive circuitry in the new model.

Technical specs
22HP, 20mm deep.
+12v: 170mA, -12v 170mA

Notes: Eurorack version of 1010's superb Bluebox. Vast power in 30 HP, with the ability to mix, record and play back in mono and stereo, hook up to a computer over USB for stereo I/O and run effects, all with CV control.

Supplier's Notes:
The bluebox Eurorack edition is the new Eurorack mixer with effects and multichannel recording/playback based on the award-winning bluebox desktop mixer. With the Eurorack edition's USB-C EXT port, you can send 2 channels of audio to and from your computer. Plus, you can control up to 6 mix settings with the 6 CV inputs. Whether recording your Eurorack jams, using it to play stems as backing tracks, or a combination of both - bluebox Eurorack edition will rock your rack!

Connect your eurorack, sampler, drum machine, and synthesizer outputs to 12 mono, 3.5 mm inputs and map them to 12 mono tracks or 6 stereo tracks - all with independent control for recording and playback. Connect your computer to the USB C port to send and receive two channels of audio.

The bluebox Eurorack edition is the ultimate in compact mixing, effects, recording, and playback for Eurorack. Smack it in your rack and hit the road with a self-contained, electronic music powerhouse!

When you purchase a bluebox Eurorack edition, you will receive:

a bluebox Eurorack edition 30 HP Eurorack module
A microSD card with bluebox firmware and pre-loaded project files
two Eurorack power cables
a bluebox Eurorack edition Quick Start guide
two MIDI Adapters

Technical Specs

Dimensions & Power
30 HP
Module dimensions including knobs: 6" x 5"x 1.6"
Depth behind front panel with ribbon cable: 1.0"
Requires the +5V rail which may not be present
on some older racks.
Uses 500-850mA at +5V (depending
on screen brightness), 320 mA at +12V, and 82mA at -12V
Requires two power connections
Capabilities
12 mono tracks, 6 stereo tracks or something in between
Connect to TRS or USB C MIDI for beat syncing effects
Lots of headroom with support for Eurorack levels up to +/-5V inputs and outputs
3 effects: reverb, delay and compressor
Records and plays back 48k, 24-bit audio WAV files
4 band EQ per track
Durable aluminum faceplate
Stream 2 channels of audio in and out over USB C

Inputs and Outputs
12 mono 3.5 mm TS inputs
2 independently controlled 3.5 mm TS output pairs that can be used as 4 mono outputs
1 stereo 3.5 mm headphone output
6 CV Inputs
1 USB C MIDI Device port
1 TRS MIDI Input
1 TRS MIDI Output
1 USB C Ext jack for streaming audio
3.5" touch screen, 4 knobs, 8 navigation buttons and 3 transport buttons

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

Technical Specifications:

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

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

Features:

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

Notes: The Stereo Mixer 1U provides a convenient way to combine your mono and stereo sources into a single stereo mix. There is level control over the first two channels and, using a rear connector, you can chain multiple Stereo Mixer 1U's together into a hidden 3rd stereo channel without using up channels on the front panel. The chain i/o connectors are fully compatible with the Mixup connectors so you are able to mix 1U and 3U mix chains together as needed.

The Stereo Mixer 1U is a versatile, expandable audio mixer for the Intellijel 1U format. It has two pairs of front panel inputs, each with its own level control, and a mixed output pair. For each input pair, the left channel is normalled to the right channel, for mono operation.

Using 3-pin Link connectors on the back panel, you can chain multiple Stereo Mix 1U's together in series, giving you the ability to mix together even more inputs, or to create sub-mixes for routing audio around larger systems. You can also these same connectors to patch Intellijel's Mixup and XY IO 1U modules to these back-panel chains, and you can connect them directly to the 14" audio jacks on an Intellijel Palette Case, a 7U case with 2nd-generation Audio Jacks Board, an Outs module, or a v2 Headphones 1U.

Stereo Mix 1U is designed specifically for audio (and not for CV mixing), it's AC-coupled, and uses audio-grade, logarithmic attenuators for a smooth, even response across the entire volume range.

Width: 16HP
Depth: 25mm
Power: 17mA @ +12V
23mA @ -12V

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

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

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

Notes: The 'MEGA-TANG' is a 4-channel linear VCA and stereo mixer providing per input control over level, effect send, pan and muting. Designed for live use in mind with a simple & compact layout, the 'MEGA-TANG' builds on the clean and transparent sounding Tangle Quartet VCA by adding a stereo mix output, effect sends (mono send with a stereo return) which pair great with the MFX, manual panning, soft mute buttons with LED indicators and an expansion port for future expandability.

Individual VCA outputs are available which remove the channel from the main mix (useful for cueing and monitoring). All signals are Euro level and bar the effects return, DC coupled for CV use as well as audio.

Technical Specifications

Power: +12V 125ma -12V 125ma
Size: 16HP
Depth: 32mm
Attenuation: approx -70db

Notes: Two channel expander for Bartender

Mixer section

Each channel has the following:

Stereo or mono - Each channel can be treated as a stereo channel or a mono channel with two summed inputs.

CV inputs for both panning and level control

Two send buses - You can route each channel to one of two send buses. Each send bus is stereo. You can choose if you want the send to come before or after the level/panning controls.

Mute - The mute has both latching mute (up) and a momentary mute (down). The mute uses a capacitor to slow the turn off and on of the mute action. So it is mostly click-less, but you may find an occasional pop.

Cue bus - You can route each channel to the cue bus.

Expandable Mixer Series

Bartenders can be cascaded to create 8ch, 12ch, or 16ch mixer. The main level is what is sent the main level control can act as a group control.

Barbacks can be added to add 2ch to your mix. Barbacks can also be cascaded enabling up to a 16ch mixer configuration.

Send-VCA can be added for CV control of the level of the send.

DVCA, Cast Iron, Mingles, and USB-2CH can all be connected with Dupont cables (aka female to female breadboard cables) via pin headers on the back of the modules. Connecting the in and out pins will send/receive the audio into the next module.

Width: 10hp
12V: 125mA
-12V: 100mA

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

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

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

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

Notes: The Control Voltage Processor from Verbos Electronics GmbH is a suite of control voltage processing possibilities divided into 3 sections in a slim 18HP package. The lower 2 sections are DC coupled mixers that allow mixing, inverting, offsetting, scaling, multiplying, dividing, crossfading or a combination of these functions. The top section is a voltage controlled slewing processor with independent control of Positive and Negative slew rate, with some unique tricks. The Positive and Negative slew, or Rise and Fall rates if you like, have reversing attenuators. The slopes can be blended from linear to RC curves (starting all slides fast and ending slow, like a proper "East Coast" Portamento) without a change in speed. It can be triggered like an AD envelope and has a Gate out that goes high when the CV out is below 100mV. Of course it can loop by patching the Gate out to the Trigger in. The Bounce control adds a unique flare of overshoot to CV changes, a bit like the effect of stopping a tape reel from turning and then letting it go. The combination of multiple voltage processors offers the user the functions of analogue computer.

Notes: Oof. Frap casually serve up one of the best filters we've seen in a long time. Quad multimode circuits with saturation and feedback give you extensive routing options. Delicious.

Supplier's Notes:
cunsa /'cu?nsa/ s.f. [dialect of Modena of uncertain etymology, probably from a Latin *comptiare, derived from comptus, participle of comere 'organize,' 'decorate'] i curing, seasoning (of foods), tanning (of leathers).

Seasoning is crucial for cooking. It is a process that enhances the flavors, glues the ingredients together, and even adds some unexpected kick.

From a gentle refining touch to a shovelful of spice, CUNSA is the perfect seasoning tool for your patches. It can sweeten a sour lead or beef up an insipid bass line, and anything in between.

And, just like a good oil, you can even taste it by itself!

CUNSA is a quadruple analog pingable multimode resonant filter, saturator, mixer, and oscillator.

It is Frap Tools' sound seasoning tool: it can gently even a patch, applying a final touch, or it can set it on fire with a ridiculous amount of spice. It's up to you and your cooking style!

It consists of four multimode resonant filters with a custom saturation and feedback control that you can use independently or in various combinations and roles thanks to a series of seminormalizations.

Four Analogue Resonant Multimode Filters

CUNSA features four state-variable filters that can be used independently or linked and mixed. Each filter provides three behaviors simultaneously: lowpass, bandpass, and highpass. Each behavior has a 12 dB/oct slope, except for the lowpass, which can be either 12 or 24 dB/oct.

Unique 'Character' Circuit for Feedback and Distortion

CUNSA handles feedback and gain staging with extreme control and versatility. Besides the usual Q control that emphasizes the cutoff frequency, the Character circuit defines the amount of soft clipping when the filter overloads. High clipping guarantees a controlled behavior with fat tone and pure resonance, while low or no clipping lets the signal saturate the filter stages and make it scream.

V/oct Tracking and Quadruple Oscillator

Each filter responds to the V/oct signal with excellent tracking. It is thus possible to move the cutoff frequency along with the main melody or make CUNSA resonate with no input and transform it into a multiple oscillator. The V/oct inputs are seminormalled so you can control more filters with the same CV. Easy chords stabs!

Ping and Ring

CUNSA is ideal for percussive and organic tones. The Ping circuit offers a behavior similar to the BRENSO but AC-coupled. Instead of shooting the frequency to the moon with any trig, CUNSA gently responds to different incoming gates with a selectable decay curve. The Ping circuit can thus create natural decay sounds when fed with trigs or smoother envelopes with any other voltage, like a linear integrator with a custom decay.

Besides this, you can also feed the filter's audio input with trigs and make it ring at high Q settings.

Linked or Individual Filtering

The four filters can work independently or arranged in groups through seminormalled inputs and sum outputs. CUNSA can thus be a 4×1, 2×2, or a massive 1×4 filter. Even odd configurations are possible, like 1+2+1 or 3+1. Mono, stereo, or quadraphonic audio is at your fingertips.

Filter and Combo Behaviour

When the filter behavior is set to COMBINED, every control of the cutoff frequency also affects the input VCA, reducing the signal amplitude and saturation as it approaches the lowest range. It can make organic decays with the ping circuit or tame the low range at high Q and Character settings.

Four Seminormalizations for Group Use

Four inputs have a cascaded seminormalization: audio inputs, VCA CV, V/oct, and Ping. Every signal patched to a filter will thus feed also those at its right, making simultaneous use even simpler. To remove a seminormalization, simply patch a dummy cable to the corresponding input.

Analog Mixing Stage and Group Outputs

Every filter output can be routed to an analogue mix bus that sums the four filters and outputs them in three combinations: all, 1+2, and 3+4. These outputs allow for versatile audio processing. Just like we did with FUMANA, we added a gentle shelving EQ for the higher frequencies of the All output to provide additional timbral variety.

CV Inputs with Attenuators

Besides the seminormalled inputs, every filter features additional CV inputs for cutoff frequency, Q, and Character, each with a dedicated attenuverter.

Notes: Endorphin.es Cockpit² is a 4-channel stereo mixer with side-chain ducking.

Key facts:

Increased headroom
Improved sound quality
The LEDs are blue/red instead of red/green (Daltonic friendly)
No TRRS jacks anymore
New aluminium knobs on the black module version

Power consumption:
240 mA +12V
75 mA -12V
0 mA 5V

Dimensions:
6 HP
38 mm deep

Notes: Compact and simple four-input mixer module from Uncle Dieter. Linear pots make it suited to mixing CV signals but it can also handle audio. Mixed signal hard-wired to two sockets.

Supplier notes:
Module A-138n is a simple four channel mixer, which can be used with either control voltages or audio signals. Each of the four inputs has an attenuator available. The output is twice available (two sockets, hard-wired like a multiple).

HP : 4

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

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

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

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

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

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

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

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

Notes: 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: The Listen Four is a four channel stereo mixer with line, modular, and headphone outputs. Two mono channels with Pan knobs and two stereo channels with dual inputs provide optimal compatibility with both stereo and mono signals. The Listen Four can be daisy-chained to other Listen modules to create a larger mixer with sub-mix outputs.

Notes: Function Junction

ADSR, Function Generator, LFO, & Mixer

According to the user manual, "Function Junction is a modulation hub combining four independent sections into a single intertwined module that offers much more than the sum of its parts. Although a sum of its parts is one of its best features!"- but Function Junction can do more than a ton of things. In fact, it's downright impressive what's possible with this lovely module.

Function Junction combines three classic analogue modulation sources, ADSR envelope, function generator, and LFO. All are fed into an attenuverting mixer to create a complex modulation junction that can be used as 4 independent sections or in conjunction with each other.
The magic of the module is the ease you can flow from using its functions for basic everyday tasks to creating hyper-complex modulation. The sheer breadth of what you can do and the ease of doing it are simply amazing. Cre8audio highly recommending reading the manual to get a feel for the possibilities.

Specifications

Width = 16hp
Depth = 30mm
Power draw: 130mA when running +12V rail, 70mA when running -12V
ADSR / Envelope facts
Fully analogue Pittsburgh Modular Synthesizers developed 4 stage ADSR circuit with independent Attack, Decay, Sustain and Release controls.
Voltage output range 0V - 10V
"Long" button doubles the length of the envelope attack, decay, and release times
"Loop" button enables/disables envelope cycling. The SUSTAIN KNOB and RELEASE KNOB are used to adjust the time it takes to loop.
"A LOOP JACK" - Enables/disable loop mode. An external gate signal will flip the state of the loop mode. If loop mode is on, the gate will turn loop mode off. If loop mode is off, the external gate will turn loop mode on.
Function Generator facts
Function Generator can be used as an envelope generator, a voltage controlled LFO, a slew generator, a gate signal delay, envelope follower, a clock source, voltage controlled clock divider, complex modulation source, and more
Voltage output range +/-5V
ATTACK KNOB - Attack duration control knob.
DECAY KNOB - Decay duration control knob.
CURVE KNOB - Attack and decay response curve. Exponential (full left), Linear (12 o'clock), Logarithmic (full right)
MOD KNOB - Modulation input (F MOD JACK) attenuverter knob.
MOD BUTTON - Assign Modulation input (F MOD JACK) to attack, decay, or both.
LOOP BUTTON - Enable/Disable loop mode.
LOOP BUTTON (2nd FUNCTION) - Press and hold MOD BUTTON then press LOOP BUTTON to assign A LOOP JACK destination to ADSR or function generator.
SUSTAIN BUTTON - Enable/Disable sustain mode.
F IN JACK - Function Generator trigger/gate input gate jack.
F MOD JACK - Function Generator modulation input jack.
F OUT JACK - Function Generator output jack.
F TRIG JACK - Function Generator end of decay trigger output jack. A trigger is output at the end of the decay stage.
LFO facts
Triangle and Square LFO outs
Dedicated rate knob
LFO output voltage +/-8V
Mixer facts
3 channel attenuverting mixer with OR circuit
Mixer can be split into 3 independent attenuverters, one two-channel mixer, and one attenuverter, or a three-channel mixer
OUTPUT 1 KNOB - Channel 1 input (1A JACK) attenuverter knob.
OUTPUT 2 KNOB - Channel 2 input (2F JACK) attenuverter knob.
OUTPUT 3 KNOB - Channel 3 input (3L JACK) attenuverter knob.
1A JACK - Channel 1 input jack. Normaled to ADSR output.
2F JACK - Channel 2 input jack. Normaled to function generator output.
3L JACK - Channel 3 input jack. Normaled to LFO output.
+OR JACK - Analog logic output jack.
OR circuit outputs the current highest voltage value of any of the voltages output by the mixer
1 OUT JACK - Channel 1 breakout output.
2 OUT JACK - Channel 2 breakout output.
MIX JACK - Mixer output.

Notes: A characteristically unique take on mixing from Buchla, with six mono inputs and a built-in mic/guitar pre-amp. Each channel can be cued to a monitor mix, while the first and last channels also include voltage-controlled panning.

Supplier's Notes:
The Tiptop 207t is a modern reimagining of the classic Don Buchla 207 Mixer/Preamplifier from the 1970s 200 Series. This stereo mixer comes with a built-in preamp that allows you to boost external instruments and microphones, making it a versatile tool for any modular setup. The 207t also features a six-channel mixer with a variety of signal routing options, including the ability to route channels to the monitor and L&R signal outputs, with per-channel control over loudness and panning.

Each channel has a Mon switch that sends the channel's signal to the monitor outputs, which are always full-volume and summed to mono, making it useful for basic monitoring applications or rudimentary mixing. The Prog switch sends the signal to the L&R signal outputs, with loudness controlled by the Level Adjustment slider and panning determined by the Channel Assignment knobs. The first and sixth channels offer voltage control of panning; these channels are hard-panned when no CV is applied.

The preamp section features a 1/4" input and multiple gain settings, making it suitable for use with external line level instruments, electric guitars, or dynamic microphones. The continuous amplification control provides added flexibility for your audio needs. Finally, the Expansion In is a stereo input that sums to the left and right main outputs, which is great for chaining multiple 207t modules or adding another stereo source at the final output.

While the 207t's functionality may be simple, it is an essential part of any 200t system, serving as the glue that holds everything together. The Tiptop 207t is a fantastic mixer/preamp option that delivers quality sound and reliable performance.

Buchla 207t Features

Mixer/preamp module based on Don Buchla's original 207 design
Six-channel mixer with per-channel level control and panning
Voltage-controllable panning on channels 1 and 6
Manual panning on channels 2-4
Program switches can act as channel mutes for main outputs
Mon switches route signal (in mono) to Monitor output
Expansion input useful for stereo chaining and more
Re-designed preamp for high audio fidelity
Preamp suitable for use with external instruments, electric guitars, dynamic microphones, and more

Eurorack module
28hp wide

Notes: The BXx2 is a dual channel preamp, EQ and mixer based on the classic Boss BX series mixers. With the inclusion of both input gain and level controls, each channel can be overdriven, producing the signature saturated and lively sound the BX mixers are known for. The EQ controls provide the channels with simple but great sounding high and low shelf EQs for emphasising and shaping sounds and an additional 'Aux' input allows another mixer or extra sound source to be chained in.

Input gain controls

Sets the input gain of the channel preamp. Higher settings will cause source to overdrive the channel.

Inputs

In 1 - Input to channel 1 of the mixer.

In 2 - Input to channel 2 of the mixer.

Aux - Auxillary mix input for chaining with another mixer or extra source.

Fixed gain (-6dB).

EQ High

Sets the gain of the fixed high shelf EQ. Boosts high frequencies when set above 12 o'clock and cuts when set below.

EQ Low

Sets the gain of the fixed low shelf EQ. Boosts low frequencies when set above 12 o'clock and cuts when set below.

Level

Sets the channel level in the mix. Use level controls to trim back volume when overdriving the preamp.

Output

Audio output producing the mix of the 3 inputs.

Technical specifications

Power: +12V 10mA / -12V 10mA
Size: 8HP
Depth: 32mm

The BXx2 was designed in collaboration with Feedback Modules and is based on their single channel 'PRE BX' module.

Notes: 3xMIA is a 6-channel attenuverting mixer/offset/scale/polarizer

3 blocks of 2-channel attenuverting mixers, using dual concentric pots. Each channel can be switched to mix with the subsequent channel, allowing for 2-2-2, 4-2, 6 mix configurations.

With nothing plugged into an input, an offset is normalled to that channel. The inner knobs control the A inputs, while the outer knobs control the B inputs.

DC coupled, so it can be used for audio, CV, or both at the same time.

80 mA +12V
80 mA -12V
35 mm Depth
6 HP wide

Notes: 3xMIA is a 6-channel attenuverting mixer/offset/scale/polarizer

3 blocks of 2-channel attenuverting mixers, using dual concentric pots. Each channel can be switched to mix with the subsequent channel, allowing for 2-2-2, 4-2, 6 mix configurations.

With nothing plugged into an input, an offset is normalled to that channel. The inner knobs control the A inputs, while the outer knobs control the B inputs.

DC coupled, so it can be used for audio, CV, or both at the same time.

80 mA +12V
80 mA -12V
35 mm Depth
24HP wide

Notes: The compact and complete VCA. Filtering and mixing rolled into one powerful unit. The Dreadbox Eudemonia Filter is an analog wave generator processor. It provides accurate mixing capabilities and features a dual filter in series. The filters are a 24dB resonant Low Pass Filter and an 18dB non-resonant High Pass Filter - these allow you to shape your sound before sending to your output. In order to keep things in line, the exponential VCA has a peak indicator to help you reference your levels.

Power Consumption: 61mA @ +12V , 69mA @ -12V
61 mA +12V
69 mA -12V
35 mm deep
10HP

Notes: X-PAN is a compact and powerful 5 channel Voltage Controlled Stereo Mixer with Low Noise and High Headroom allowing for creation of complex panoramic audio imagery in just 10hp.

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

X-PAN consists of two full featured Channels and one simpler Channel. The top two Channels each have voltage controlled cross-fading and panning while the third Channel is a stereo aux input with stereo VCA. All three Channels are combined together at the stereo SUM outputs.

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: Module A-138n is a simple four channel mixer, which can be used with either control voltages or audio signals. Each of the four inputs has an attenuator available. The output is twice available (two sockets, hard-wired like a multiple).

The module is the slim version of module A-138a and offers nearly the same features. But the distances between the controls are smaller and rubberized small-sized knobs are used. In return the front panel has 4 HP only which is half the width of the A-138a. The module is primarily planned for applications where only limited space is available. The only functional difference compared to the A-138a is the missing attenuator for the (dual) output.

Notes: The VCA Matrix from 4ms is a playable 4x4 matrix of 16 VCAs.

Four CV or audio inputs can be routed in any amount/combination to four outputs, using the 16 CV control jacks, Level knobs, and Mute buttons.

Notes: This is the version II of the original uVCA.

This module was adapted from a design by David G. Dixon

Notes: Pan and cross fade up to three signals with AJH's versatile Triple Cross. Four different modes allow you to set up the three channels in numerous ways, for both audio and CV processing.

Supplier's Notes:
The Tone Science Triple Cross module is a design collaboration between electronic musician/composer Ian Boddy and AJH Synth.

It features three independant cross fader and panner channels, and it can be used with both audio and CV signals. Each of the channels can be configured in one of four different ways:

1) One In, One out Linear VCA

2) Two in, One out crossfader

3) One in, Two out panner,

4) Two in, Two out cross fader & reversing panner combined.

Audio rate modulation can also be used on the CV inputs to create Ring modulation and Cross modulation type sounds. Each channel has a dedicated Fade control, CV input, and CV Level attenuverter. These can be used together to bias incoming CV signals.

The L1 and L2 outputs from channels 1 and 2 are normalised to channel 3's inputs, which also have their own level controls to balance incoming signals. This allows very interesting, complex fading and panning between four different input sources, to either Mono or Stereo outputs..

The Triple Cross is very versatile, yet relatively simple to understand and use. However, as they say "knowledge is power", so do spend a little time reading about how to configure the channels in the four different modes, and how to combine all three channels together to create a super-powerful Four to Two to One cross fader.
Each of the three channels can be configured in four different ways, and all three can be used simultaneously. They do not all have to be in the same mode, so we could for example use channel 1 as a cross fader, channel 2 as a Panner for completely different signals, and channel 3 as a Linear VCA, again for different signals.

Specifications

Effective CV Range for CV-1, CV-2 and CV-3 is 0 to +5V with attenuverter fully clockwise or 0 to -5V with attenuverter fully anticlockwise.
Maximum permissible CV Range for CV-1, CV-2 and CV-3 is -12 to +12V
IN 1A to IN 3B Input levels -5V to +5V, levels up to +/-10V are possible however some clipping may occur.
Module Width: 14hp
Module Depth: 26mm (Including power lead)
Current Usage: 80mA Positive, 72mA Negative

Notes: The Tone Science Triple Cross module is a design collaboration between electronic musician/composer Ian Boddy and AJH Synth.

It features three independant cross fader and panner channels, and it can be used with both audio and CV signals. Each of the channels can be configured in one of four different ways:

1) One In, One out Linear VCA

2) Two in, One out crossfader

3) One in, Two out panner,

4) Two in, Two out cross fader & reversing panner combined.

Audio rate modulation can also be used on the CV inputs to create Ring modulation and Cross modulation type sounds. Each channel has a dedicated Fade control, CV input, and CV Level attenuverter. These can be used together to bias incoming CV signals.

The L1 and L2 outputs from channels 1 and 2 are normalised to channel 3's inputs, which also have their own level controls to balance incoming signals. This allows very interesting, complex fading and panning between four different input sources, to either Mono or Stereo outputs..

The Triple Cross is very versatile, yet relatively simple to understand and use. However, as they say "knowledge is power", so do spend a little time reading about how to configure the channels in the four different modes, and how to combine all three channels together to create a super-powerful Four to Two to One cross fader.
Each of the three channels can be configured in four different ways, and all three can be used simultaneously. They do not all have to be in the same mode, so we could for example use channel 1 as a cross fader, channel 2 as a Panner for completely different signals, and channel 3 as a Linear VCA, again for different signals.

Specifications

Effective CV Range for CV-1, CV-2 and CV-3 is 0 to +5V with attenuverter fully clockwise or 0 to -5V with attenuverter fully anticlockwise.
Maximum permissible CV Range for CV-1, CV-2 and CV-3 is -12 to +12V
IN 1A to IN 3B Input levels -5V to +5V, levels up to +/-10V are possible however some clipping may occur.
Module Width: 14hp
Module Depth: 26mm (Including power lead)
Current Usage: 80mA Positive, 72mA Negative

Notes: SINGOLI is a 7 channels DC coupled active combiner with an analogue transient detector output.

All the inputs I are equipped with LED meters and a dedicated attenuating potentiometer.

O will give you the combined mixed output.

T is an additional transient detector out that will fire only when a certain threshold is detected from the sum of all the inputs.

The toggle switch activates or deactivate the internal connection to Tutto&Sempre when the two modules are paired together thanks to the included JST cable.

Features

DC coupled mixer with 7 inputs and individual attenuators.
Intensity sensitive LED meters on all the inputs.
Analogue transient detector output.
Toggle switch to activate / deactivate its normalization to Tutto&Sempre.
"Whatever" power connector a.k.a. don't mind the polarity.

Technical Specs

Width: 6HP
Depth: 25mm
15mA +12V
10mA -12V

Notes: Arkan

Dual Voltage Polarizer

You may have heard this before: "You can never have enough VCAs". A voltage polarizer (also known as a bipolar VCA or a 4-quadrant multiplier) is often viewed as the VCA better suited for CV. As it can be used as a unipolar VCA and it allows you to invert a signal when it is modulated with a negative voltage. Resulting in interesting movements in your modulations.

What sets Arkan apart from other voltage polarizers is the curvature control, a feature usually only seen in unipolar VCAs. By taking a different approach to the classic voltage polarizer circuitry, Malstrom have devised a unique solution that provides a new way to shape your audio and CV. The non-linearity of the polarizer also makes Arkan really good at reaching silence when presented with a 0V CV signal.

At audio rate, Arkan acts as a ring-modulator with four controls to change timbres.

Boosting adds odd harmonics (symmetrical distortion), while offsetting adds even harmonics (asymmetrical distortion). The modulation curve changes ring modulation sharpness, and modulation strength determines the carrier dominance.

Two identical channels with carefully selected features will make Arkan your go-to modulation control hub. Arkan is especially useful for common utility duties such as mixing, scaling, inverting and offsetting. As well as CV modulation, feedback patching, and waveshaping. All this makes Arkan a very versatile tool that will certainly have a place in your patch!

Features (per channel)

- Input attenuation with inverter switch gives you more precision and range, with voltage inversion and quick silencing.
- Bias input with attenuverter control to offset your input signal or mix/invert another signal.
- CV input with curvature control allows you to shape the polarizer and improve its 0V attenuation.
- CV modulation control to fade in the modulator, allowing you to determine the amount of modulation.
- Voltage gain and polarity led indicators showing you exactly what is happening under the radar.
- Output normalled internally and externally (to other Arkans) to easily mix signals.

Additional features

Optional signal boost (x4 / +12dB) via switch on the PCB to increase voltages when needed.
5V or 10V voltage reference selection for bias voltage and CV input range to adjust Arkan to your system.

Dimensions
- 8HP.
- 28mm, Skiff-friendly.

Power consumption
- 90mA @ +12V.
- 85mA @ -12V.

I/O specs

- All inputs DC coupled.
- All inputs handle audio signals.
- All inputs have 100k input impedance. - All inputs have +-10V Input range.
- CV range +-5V or +-10V.
- Bias Voltage range +-5V or +-10V.
- Boost gain x1 or x4.
- All inputs are overvoltage protected.
- Keyed power header.
- Reverse power protection.

Notes: Versatile and valuable. The amazing Dreadbox Utopia is a CV audio and manipulator. It allows you to control a wide range of different properties inside your Eurorack system. These include four attenuverters, an offset generator, and a four to three mixer. This selection of tools give you the means to take control of your signals and bend them fully to your liking. Helping you put the finishing touches to your synth patch.

40 mA +12V
27 mA -12V
23 mm deep
10HP

Notes: Mix up to four stereo channels in just 4hp, or chain multiple modules together to add channels. Inputs are normalled for mono operation. Simple, compact and high quality at a reasonable price.

Supplier's Notes:
4xSt.Mixer is 4 HP quad stereo mixer.

Right inputs are normalled to Left inputs for easy mono operation

Several 4xSt.Mixers can be chained together or with other HN stereo modules via sockets on the back side

65 mA +12V
50 mA -12V
35 mm deep

Notes: Erica Synths Fusion Dual Mixer is designed to mix and overdrive audio signals on the vacuum tube.

Use the Fusion Mixer as two independent 3-input mixers (also for stereo signal mixing) or a 6-input mixer. Special feature of the Fusion Mixer - great tube overdrive effects when level knobs are set to 3 o'clock or above. When used with drum machines, it even emulates sidechain compressors. When used to mix signals from VCOs Fusion Mixer it works as waveshaper, especially, if pulse width modulated pulse signals is used in one of inputs.

All Fusion modules by default are configured to work with regular eurorack PSU.

Due to the fact that cold tube heaters have lower resistance, Fusion modules have significant power consumption peak at startup, when power consumption almost doubles for 1-2 seconds. This is not a problem with linear PSUs that have power inertia, but may cause switching PSU internal protection to turn off power supply. Please make sure your PSU has some headroom before installing multiple Fusion modules.

Technical specifications:

Input signal level: up to 20V ptp
Output signal level: 10V ptp
Mixer GAIN: 1
Power supply: bipolar +-12V , eurorack standard
Power consumption: Eurorack PSU configuration: 160mA@+12V, 10mA@-12V
Module width: 14HP
Module depth: 25mm

Notes: Erica Synths Black Mixer is compact, high quality audio mixer with bonus features - mute switch on each input and three buffered outputs. This allows you to add audio signals to your mix instantly and in exactly right level, plus you can send signals to several post-mixer devices simultaneously, for example, split the output signal to LP and HP VCFs and create advanced bandpass and notch filters.

Technical specifications:
Max input level: -10V - +10V
Mixer gain: 1
Power consumption : +8mA, -8mA
Module width: 6HP
Module depth: 25mm

Notes: Sindikat is made to be placed in the heart of every modular setup: copy, invert, attenuate, scale, get different polarity versions simultaneously of two pair of mixes, mix CV as well as audio (up to 8 sources in total), mute or switch to add desired source to a bigger unity mix, scale two separate mixes with chosen gain.. All circuits can preserve their independent use and/or be combined!

Details & use:

The module consists of circuits designed to group the most useful operations for signal mingling in modular synth setups -but in the more fun manner!

It is designed in the way that the circuits can function independently -be patched to the other modules- or to be combined inside the module at the same time!

On the top of the module there is a buffered multiple (the bi-color led is indicating signal input and its polarity) : Next to the input there are two outputs giving the exact copy of the incoming signal. On the third output you'll get the 'attenuverted" version of that signal which is controllable by the dedicated attenuator/inverter potentiometer.

This signal can be further added (or muted) via its switch, internally to a unity gain mixer situated on the bottom of the module via its SUMM OUT.

This mixer has its own 3 inputs who will accept CVs as well as audio signals with an output gain of 1/3.

Its bi-color led will indicate the polarity of the incoming signals.

In the center of the module there is a CV Processor consisting of two mixers each mixing two signals- in the way that:
The first one takes two signals (A and B) and outputs simultaneously the positive version of their mix (AB+ OUT) and the negative version (AB- OUT).
Their gain is scaled by the potentiometer: going on 1x in the middle position to 2x fully turned. (After middle position with a stronger signal and due to higher gain it will start to saturate producing an distortion-like effect)
Further, via their switch, those mixes also can be added to a unity gain mix (SUMM OUT) and therefore creating a larger mix.
You'll do that by choosing which polarity output you want to send to a summing mix.
In the middle position of the switch the signal is "off" so you can use this to mute/un-mute the signal in the unity mix. Also, even if it is in "off" position this only breaks the internal link to a unity mix but you can still use their distinctive outputs to send your positive and negative mixes elsewhere in your system.

Goes the same for the second one: C and D inputs giving positive (CD+) output result and negative (CD-) simultaneously , all with gain select and the switch choice for summ positive or negative (or none) to a bigger unity mix.

You can also choose to use those two circuits as a simple attenuators for ex. by patching only one signal so you'll get an attenuator and polarizer at once!

The module can process CV and audio as well in every circuit.

Therefore, by summing eventually all the signals to a final "SUMM OUT" output you can create up to 8 sources -in the module- large mix!

Made for more fun with a modular!

This module fits perfectly well with Modulaire Maritime "Decca" switch-based manual control module.

As these modules are developed from practicing recording in "one take" (same for a live performing), combining them you get an extended control over CVs, gates and audio going on in the system, allowing to switch- stop/mute, change polarity, introduce/mix more gates, drums,.. on the fly.

8hp
25mm deep
Reverse voltage protected

Notes: Navigator is a compact, multi-use voltage utility designed to bring playable control to CV sources in your rack. The combination of normalled voltages and mixing allows you to attenuate, polarize and offset signals to modulate parameters exactly within the sweet spot of another module's CV input. Navigator is a compact, multi-use voltage utility designed to bring playable control to CV sources in your rack. The combination of normalled voltages and mixing allows you to attenuate, polarize and offset signals to modulate parameters exactly within the sweet spot of another module's CV input.

Details:

4hp

25mm deep

11 mA on +12V, 8 mA on -12V, 0 mA on +5V

Notes: Erica Synths Black Quad VCA2 is a versatile four channel voltage controlled amplifier and mixer module for use in complex modular systems. Each channel has linear/logarithmic response selector and signal level indicator LED. All outputs are sequentially mixed and CV inputs are normalled to each other, so you can use the module in various configurations. If no CV is applied, the Black Quad VCA2 performs as a signal mixer, and the 4th channel is DC coupled for controlling CV sources, as well.

Notes: This mixer has three DC-coupled inputs, making it perfect for mixing both audio or CV signals from sources such as VCOs, LFOs and envelopes etc.

Each channel features a unity-gain, linear attenuator.

Specifications

Format: Eurorack
Width: 8hp
Depth: approx. 25mm
Power consumption:
+12V: 10mA
-12V: 10mA
+5V: 0mA

Notes: This mixer has three AC-coupled channels, each with a logarithmic unity-gain attenuator; suitable for mixing audio signals from modules such as VCOs etc.

Specifications

Format: Eurorack
Width: 8hp
Depth: approx. 25mm
+12V: 20mA
-12V: 20mA
+5V: 0mA

Notes: This mixer has six DC-coupled inputs, making it perfect for mixing both audio or CV signals from sources such as VCOs, LFOs and envelopes etc.

Each channel features a unity-gain, linear attenuator.

Specifications

Format: Eurorack
Width: 12hp
Depth: approx. 25mm
Power consumption:
+12V: 10mA
-12V: 10mA
+5V: 0mA

Notes: MAR is a multichannel dual mixer module for the modular synthesizer. Both mixers are capable of mixing audio, CV and gate signals because they are DC coupled. MAR has two independent 4-channels mixers:

Mixer X: Is a four channel mixer with gain control for each channel. The potentiometers use logarithmic tape to have a good control with audio signals. This mixer features two outputs, the mixer output and its inverted. The output level is shown in the LED.

Mixer Y: Is a four channel mixer with gain control for the sum of the Y channels. If no jack is connected to the input Y1, the output of the Mixer X is normalled to Mixer Y. The potentiometer use logarithmic tape to have a good control with audio signals. This mixer features one output, the sum of the 4 channels. The output level is shown in the LED.

This Mixer can work as two 4-1 Mixer, or 7-1 Mixer with global gain control.

INPUTS:
4 Mixer X inputs.
4 Mixer Y inputs.

OUTPUTS:
Mixer X output.
Inverted Mixer X output.
Mixer Y output.
Mixer X + Mixer Y output.

FAST SPECS:
Dual mixer module for the modular synthesizer - Eurorack.
8 HP - 15mm Depth - Skiff friendly.
Both mixers are capable of mixing audio, CV and gate signals.
Mixer X: 4-channel mixer with gain control for each channel.
Mixer Y: 4-channel mixer with gain control for the sum of the channels.
If no cable connected to Mixer Y input 1, the output of the Mixer X is normalled to Mixer Y.
Can work as two 4-channel mixers, or one 7-channel mixer.
The output level is shown in the LEDs.

Notes: This is the main module of the mixer and the only indispensable one, the only one that needs the eurorack power cable. It provides power to all the other modules and contains the summing circuit for all channels in every audio bus.

32 mA +12V
32 mA -12V

Notes: This is a 4 mono channels expansion. Several of these modules can be added to provide more channels. Every channel features:
- Mono input
- Vactrol Gate (plug a CV into the GATE IN to modulate the volume of a channel, just like a classic VCA. When nothing is plugged in the GATE IN, the gate is normalled to fully open)
-SEND A control (switchable PRE/POST, in PRE mode the signal is present regardless to the channel volume control but only if the channel switch is in ON position)
-SEND B control (post-fader)
-PAN control (only affects the master bus)
-VOLUME control (affects the master, cue and POST sends, does not affect PRE-fader send)
-ON/OFF/CUE switch: ON - channel is routed to the master bus
OFF - channel is muted
CUE - channel is routed to the cue bus

13 mA +12V
8 mA -12V

Notes: 4-input VCA stereo mixer w/ pan, stereo out, metering

50mm deep

Notes: The 1U Stereo Mixer is intended for pannable stereo output, but it is also suitable for both DC (Gates, Triggers and Control Voltage) & AC (audio) signals.

Specifications:
Current draw: +12: 13mA, -12: 9.2mA
Depth: 32mm
Width: 24HP
Please note: Synthrotek's 1U products do not fit in Vermona or Intellijel cases.