Synth modules

Notes: Emulate the nostalgic sounds of old audio equipment with the 2hp Lo-Fi. Finding inspiration in quirks and happy accidents found in audio devices of the past, Lo-Fi can take any sound and give it the magic of tasteful degradation.

Lo-Fi carries two degradation modes: Analog and Digital. In the analogue mode, control the amount of wow and flutter for anything from subtle to dynamic pitch fluctuations, tickle the sonic spectrum with ASMR hiss and crackles, and warm up the coldest sounds with tape compression and saturation. In digital mode, dial in BitCrush amount, sample-rate reduction, and the wildest distortion in 2hp to cover your sound in digital crunch, or emulate blown out speakers.

With CV control over each function, and an ultra-crisp audio pass through, take your patch from hi-fi to lo-fi at a moment's notice. Get reel with the 2hp Lo-Fi!

Tech Specs: Width: 2HP, Depth: 45mm, Power Consumption: +12V=82mA -12V=4ma +5V=0mA

Notes: Emulate the nostalgic sounds of old audio equipment with the 2hp Lo-Fi. Finding inspiration in quirks and happy accidents found in audio devices of the past, Lo-Fi can take any sound and give it the magic of tasteful degradation.
Lo-Fi carries two degradation modes: Analog and Digital. In the analogue mode, control the amount of wow and flutter for anything from subtle to dynamic pitch fluctuations, tickle the sonic spectrum with ASMR hiss and crackles, and warm up the coldest sounds with tape compression and saturation. In digital mode, dial in BitCrush amount, sample-rate reduction, and the wildest distortion in 2hp to cover your sound in digital crunch, or emulate blown out speakers.

With CV control over each function, and an ultra-crisp audio pass through, take your patch from hi-fi to lo-fi at a moment's notice. Get reel with the 2hp Lo-Fi!

Tech Specs: Width: 2HP, Depth: 45mm, Power Consumption: +12V=82mA -12V=4ma +5V=0mA

Notes: Easily connect your modular system to the rest of your setup with Out, a compact 2HP stereo line output and headphone module. Despite its small size, it includes everything you need for clear, convenient listening.

The top section features stereo modular-level inputs with LED indicators for quick level monitoring. From there, the signal is routed to both a stereo line output and a dedicated headphone jack, each with independent volume control. Whether you're sending your modular through external effects, recording into an interface, or just monitoring with headphones, Out keeps things simple and efficient.

Notes: Swarm is a hyper-oscillator capable of an array of patch-filling sounds. Create super-saws, tonal noise hurricanes, and thick bass and lead lines.

Swarm is comprised of a large set of oscillators (up to 88 voices!). Control the number of available oscillators with the Voices control, and dial in the desired amount of pitch variance across the voices with detune. Take Swarm's oscillators from a rich thickening of sound to atonal chaos in the turn of a knob! Swarm also provides macro pitch control with the Freq knob, which also tracks 1v/oct through its CV input. A waveform toggle is also available for switching between sawtooth and pulse waveforms, expanding the timbral palette Swarm offers! Design pumping trance leads, minimoog style basslines, and more with Swarm!

Tech Specs:

Width: 2HP
Depth: 45mm
Power Consumption: +12V=82mA -12V=4ma +5V=0mA

Notes: Swarm is a hyper-oscillator capable of an array of patch-filling sounds. Create super-saws, tonal noise hurricanes, and thick bass and lead lines.

Swarm is comprised of a large set of oscillators (up to 88 voices!). Control the number of available oscillators with the Voices control, and dial in the desired amount of pitch variance across the voices with detune. Take Swarm's oscillators from a rich thickening of sound to atonal chaos in the turn of a knob! Swarm also provides macro pitch control with the Freq knob, which also tracks 1v/oct through its CV input. A waveform toggle is also available for switching between sawtooth and pulse waveforms, expanding the timbral palette Swarm offers! Design pumping trance leads, minimoog style basslines, and more with Swarm!

Tech Specs: Width: 2HP, Depth: 45mm, Power Consumption: +12V=82mA -12V=4ma +5V=0mA

Notes: Capture the iconic sound of tape sliding to a halt with Tape Stop, a clock syncable tape stop module that puts this classic effect at your fingertips. Originally an accidental artifact of analog tape, this effect has become a beloved tool in music genres from hip-hop to IDM. Now, it's fully controllable in your modular system.

Adjust the Lag to set the stop length, then tap Trig to activate. Hit it again to resume your audio seamlessly. With clock sync, your stops and starts stay perfectly in time, and a toggle lets you switch between momentary and latching Trig modes. Add a touch of tape magic to your modular system with Tape Stop!

Notes: Capture the iconic sound of tape sliding to a halt with Tape Stop, a clock syncable tape stop module that puts this classic effect at your fingertips. Originally an accidental artifact of analog tape, this effect has become a beloved tool in music genres from hip-hop to IDM. Now, it's fully controllable in your modular system.

Adjust the Lag to set the stop length, then tap Trig to activate. Hit it again to resume your audio seamlessly. With clock sync, your stops and starts stay perfectly in time, and a toggle lets you switch between momentary and latching Trig modes. Add a touch of tape magic to your modular system with Tape Stop!

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

Notes: The hands-on control of hardware meets the versatility of software. Bridging the gap between Eurorack and VCV Rack, the MetaModule includes over 160 built-in modules plus access to over 200 third-party options.

Supplier's Notes:
The MetaModule puts real knobs and jacks on virtual software modules. Step back from the computer and make music with hardware, while keeping the flexibility and expandability of software.

The MetaModule comes with over 160 built-in modules from 4ms Company, Befaco, HetrickCV, NonlinearCircuits, and Scanner Darkly, plus clones of popular classics such as the Mutable Instruments eurorack modules, fun physical modeling algorithms, and lots of handy utilities.

All of the included modules are also available on the computer using the free program VCV Rack. Whether you make patches on VCV Rack and transfer them to the MetaModule, or if you just create patches directly on the MetaModule, there are plenty of creative modules to inspire new ways to make music.

MetaModule Plugins

If the 160+ built-in module aren't enough, you can load more modules as plugins. Already there are over 200 modules in third-party plugins from Bogaudio, Valley, ChowDSP, NANO Modular, and the list is growing. 4ms have an SDK available to make it easy for VCV Rack plugin developers to convert their plugin to a MetaModule plugin. 4ms' licensing terms are non-restrictive: developers are welcome to distribute their plugin in any way they wish, commercially or not.

Mapping Knobs and Jacks

The MetaModule has 12 knobs that can be mapped to virtual knobs. Each knob can be mapped to up eight virtual knobs, and each mapping can have a different range and offset. You also can save a group of mappings as a Knob Set and switch between Knob Sets with the encoder. You also can map the 8 inputs and 8 outputs to virtual module jacks. Also, the MetaModule is a USB MIDI host, so you also can map MIDI CC, note, gate, and other parameters to knobs and jacks.

Expanders

There are lots of ways to customize your MetaModule. A Wifi expander allows you to wirelessly transfer patches from your computer. Add eight more knobs with the Knob expander, or buttons with the Button expander. A CV/Audio expander adds more high-resolution inputs and outputs, and the Gate In/Out expander adds not only gate jacks but also TRS MIDI and I2C.

Under the Hood

There are six CV/Audio inputs, two gate inputs, and six CV/Audio outputs. The CV/Audio jacks are all 24-bit, 48kHz DC-coupled, -10V to +10V. A USB-C jack accepts MIDI devices and thumb drives. Patches and plugins can be loaded via a USB drive or microSD Card, and internal flash memory lets you save patches you always want to come back to.

The processor is more advanced than anything 4ms has used in the past, and is among the most powerful processors found in Eurorack. Startup time and latency are blazingly fast.

Modules

160 built-in modules
Over 200 3rd-party module plugins available so far, and the ecosystem is growing
Create patches using VCV Rack or directly on MetaModule

Patches

Patches are loaded from microSD Card, USB drive, or via the Wifi expander
Patches can be optionally saved onto internal flash memory
Create patches using VCV Rack or directly on MetaModule
Patches can be given a name and description

Mappings

Map each physical knob to up to 8 virtual knobs
Set range and offset for each mapping, including inverted control
Knob mappings are grouped into Knob Sets, and changing Knob Sets can be done quickly without menu-diving
Map physical jacks to virtual jacks, seamlessly making splits/mults
Add or edit modules, cables, and mappings in real-time while the patch is playing
Create alias names for mappings like "Kick Drum Level"

Interface

Simple, intuitive graphical interface lets you zoom in on details, or zoom out to get a big picture
Patch View displays the patch as faceplates and cables, with knobs, buttons, and lights animating in real-time
Knob Set View simplifies the display, showing only the mapped knobs for the current Knob Set
Module View shows just one module and lists the names of each jack, knob, and control legibly
Mapping View lets you adjust details of a knob mapping
Adjust styles and visual preferences to your liking
Save, rename, duplicate, and delete patches
Firmware updater and plugin loader read from microSD Card or USB drive

Hardware

12 Knobs
8 CV/Audio outputs, 24-bit 48kHz, -10V to +10V, DC-coupled
6 CV/Audio inputs, 24-bit 48kHz, -10V to +10V, DC-coupled
2 Gate inputs
USB-C jack: MIDI Host or MSC (External drive) Host
microSD Card slot
Internal Flash RAM for additional patch storage
Dual-core 800MHz Cortex-A7 plus Cortex-M4 co-processor
512MB DDR3 533MHz RAM
Bare-metal operation for fast startup and low latency

26hp

Notes: The WT-QUAD-LFO module consists of four individual, digital, wavetable based low frequency oscillators (LFO) with an easy and intuitive featuring a 1.8" OLED color display. The module can be updated easily by inserting a flash drive with the firmware files in the USB port on the front panel.

The oscillators and their respective controls, inputs and outputs are organized in four channels. The frequency of each oscillator can be linearly or exponentially (1V/Oct.) controlled through the voltage applied to the corresponding CV input.

Each LFO channel can output one of the predefined waveforms (including sawtooth, ramp, square, sine, triangle), morph between two different waveforms or generate a random waveform. It can be externally reset through the sync input.

Each trigger output can be set to output a specific phase of the corresponding waveform.

The module offers cross frequency modulation (FM) and internal sync between LFO channels. It features also phase distortion and phase spreading of the outputs, including a classical quadrature mode (90- phase spread). Frequency relationships between the four LFOs can also be set.

Hardware

4x CV inputs -5 V to +5 V
4x Sync inputs 0 V to 5 V, active low or active high
4x Clock inputs 0 V to 5 V, active low or active high
4x LFO outputs -5 V to +5 V
4x Trigger outputs 0 V to 10 V, active low or active high
1.8" OLED Display with 160 x 128 pixel
4x push encoder
USB port for firmware update
Size: 14HP
WT-QUAD LFO - Features list:

Wavetable based, 4 channel LFO
Default waveforms: SAW, SQUARE, SINE TRIANGLE
Random waveform generation
Custom wavetables can be loaded using USB flash drive
LFO output: offset and attenuation programmable
LFO Frequency range from 0,0032 Hz to 4 kHz
Frequency free (Hz) or quantized (note)
Presets can be selected through CV input
LFO channel can be internally synced and cross modulated
Single shot modus

Notes: ***B-STOCK: Product with some signs of usage but in perfect working order***


A fresh twist on a simple 303-style acid synth, featuring a triangle/sawtooth/square wave VCO, multi-mode resonant filter, simple AD envelope and a VCA which can be overdriven. Excellent value.

Supplier's Notes:
ADDAC started this module with the idea of developing a complex drum source however, somewhere along the process, it was clear how much better it performed as a synth voice and this lucky accident was embraced.

It features a VCO with a [FREQUENCY] and [FINE TUNE] knob plus a dedicated CV Input and Attenuator knob (tunable over 4 octaves).

The VCO waveform output is achieved by selecting either a Triangle or Saw through a switch. the selected waveform can then be mixed/balanced against the square wave. The resulting mix is then sent to the Filter.

The Filter features a [CUTOFF] and [RESO] resonance knob plus a Cutoff CV Input and Attenuverter knob.

A 3 position switch is used to select the filter type: Highpass, Bandpass or Lowpass.

The resulting output is then sent to the VCA.

The VCA features an Input with [INPUT GAIN] knob which at maximum can amplify the incoming signal by a factor of 2.

This is a very important control, it accepts any signal Trigger, Gate or CV. Whatever input is plugged in the signal is then fed through an AD with a very short attack and controllable decay through the [VCA DECAY] knob plus the CV Input and Attenuverter knob. The resulting slewed signal is then used to control the VCA gain.

This signal is also sent to the CV OUTPUT as well as the LED monitor.

The Accent input adds to the Input signal creating a different amplitude output.


The CV OUTPUT is normalled to the Frequency and Cutoff inputs.

Tech Specs:
9HP
4cm deep
80mA +12V
80mA -12V

The [INPUT GAIN] knob

Usually Attack/Decay envelopes have a maximum voltage of +5v, no matter if the input gate is +5v or above the AD will clip at +5v. In this case, this clipping method was not used, and instead ADDAC allowed the incoming voltage to determine the maximum AD voltage, meaning that if a +5v gate is present then the AD maximum voltage will be +5v but if a gate of +10v is sent then the AD maximum voltage will be +10v.
This also means that with higher input voltages the decay, although falling at the same speed, will be longer than with lower voltages as it has a longer range to go back to 0v.

As previously mentioned, The [INPUT GAIN] knob can amplify the incoming input by a factor of 2, allowing to use a standard +5v gate or envelope and being able to make the resultant AD go up to +10v.

The AD signal is responsible for opening the VCA. Up to +5v the VCA will open to unity gain above this value the VCA will start to amplify and eventually saturate and distort. This saturation will add harmonics to the signal which will change its gentle timbrical nature to a more unique and peculiar timbre that will make the module shine in Acid contexts.

Adding high levels of Resonance or even filter self oscillation in combination with high VCA saturation will create even more harmonics that ADDAC highly encourage the user to explore.

Notes: A passive module to allow easy connection from Modular to Eurorack, avoid flimsy hook probes or alligator wires with a robust connection that will keep your signal intact.

Features:

3.5mm jack to BNC including 50O male-male cables.
Ships calibrated set to 10x as default, user's can select 1x but soldering a smd jumper.

Specs:

4HP
15mm deep
Passive

Notes: ADDAC200RM allows a simple and straight forward way to monitor the voltage of your system. A 0.1% precision analogue voltage meter shows the status of both +12V and -12V rail.

Eurorack +/-12V power rails

Although we all refer to Eurorack PSU voltages as +12V and -12V this is hardly ever the case, although most systems operate at close proximity to this ideal reference, there are situations where the drop from the ideal voltage is large enough to influence the performance of your system.

PSU current ratings

Running a PSU too close to its limits will always cause more stress to the PSU, a good practice it to use only about 75% of your PSU maximum ratings, this will greatly extend the PSU life.

PSUs will show a small voltage drop as current increases which will drastically increase when pushed closed to it's limits. Heat will also influence this drop, heat is related to the current drawn, as more current is being drawn more heat will build up on the PSU, heat conditions will reduce the maxi- mum amount of current that can be delivered by the PSU. While the current consumption drop is somewhat stable and immediate (as you turn the frame on the current consumption will stabilize in a few seconds) the heat drop will take some time to occur, heat will build up over time until it stabilizes and only if it has "headroom" to stabilize. If heat dissipation is not effective than the drop will continue until it reaches a balance point which can be several volts below the 12V reference. At this point your PSU will be under great stress and the heat generated is prone to leave some permanent scars.

Heat will start to have an impact at about an ambient temperature of 50 degrees celsius, at 70 degrees the maxi- mum current rating will drop by 50%. If your PSU is rated at 2A maximum and it's running at 70 degrees then it will only be able to deliver 1A maximum.
For the PSU this is a complex balancing act as current influences heat and heat influences the maximum amount of current available which all together influences the voltage drop.

This is why it's so important to keep the PSU load at a sensible level.

PSU protections

Some PSUs feature over voltage, over current and overheating protection and will turn off when the operating conditions trigger any of the protection threshold levels.

At this point it's typical that the PSU will enter a Hiccup mode, where it turns on checks the current conditions and quickly turns off if they haven't changed, leaving it in an intermittent limbo where it powers on and off at some regular frequency.

If the conditions change enough to drop below the protection threshold levels then the PSU will automatically recover and stay on.

PSU stress

Different situations can be responsible for causing stress that can damage the PSU, it's possible to reverse a ribbon power cable enough times or leaving it connected long enough to partly damage the PSU.

Another situation is having a module that due to some partial previous damage may be drawing more current than specified which will not be accounted for when calculating your system current consumption.

Stress can cause permanent damage to the PSU, however some damages can be only partial leaving you with a PSU that no longer features the specs described by the manufacturer but with no apparent misbehaviour. The LED monitors on bus boards will be on, but in reality it will be underperforming at an unknown percentage of the original specs. These situations can be quite hard to debug without the proper tools to evaluate the cause of the problem.

PSU impact on modules

Some modules are more susceptible to PSU changes than others, modules that feature internal regulators will be less susceptible to PSU voltage, modules that use internal +5v, +/-9v, +/-10v regulators will have more tolerance than modules that use the PSU voltages directly like it is for most cases. Also modules that use voltage reverse protection will already have a 0.3v to 0.8v drop inherent to the protection circuit.

While many digital modules can withstand lower voltages some others will be more dependent on the reference voltage and may show strange behaviours.

This module can help preventing all these situations, it won't fix any problem but can help on the day-to-day monitoring of your system and in keeping your PSU in healthy conditions.

Tech Specs: 4HP/3,5 cm deep
60mA +12V
60mA -12V

Notes: ADDAC219IN was designed to replace bulky 1/4 inch jacks when plugging external stereo gear into the modular realm.

Using a 3.5mm TRS stereo jack input, the module splits the TRS stereo signal into 2 mono outputs (Left + Right) while also converting the line input to synth level.

There are 2 independent sections allowing for two stereo sources to be connected.

Tech Specs: 3HP, 4 cm deep, 20mA +12V, 20mA -12V

Notes: ADDAC219OUT was designed to replace bulky 1/4-inch cables when plugging external stereo gear to the modular realm.

It merges 2 TS mono signals (Left + Right) into a TRS stereo output while also converts the synth inputs to line level.

There are 3 independent sections allowing for three stereo sources to be connected.

Tech Specs: 3HP, 1.5 cm deep, Passive module

Notes: Control Eurorack using your breath with this unique module from ADDAC. A melodica pipe connected to the front panel allows you to generate two independent CV signals from breath inputs. Funky.

Supplier's Notes:
This module expands ADDAC's line of expressive controls, it follows the heritage of wind/breath controllers with one major difference, the pipe has no air escape creating pressure inside the tube controlled by the user's mouth. For a seasoned woodwind or brass musicians this working principle may sound unorthodox, however this way pressure can be controlled for longer without the need to breath in or learning circular breathing techniques. It's relatively easy to control the pressure in your mouth while still breathing through the nose.

The module is provided with a standard melodica pipe which connects to an air filter (providing a receptacle for condensation to form and isolate the sensor) and lastly connects to the module frontpanel.

The signal captured by the sensor is then sent to two independent sections with exactly the same functions as seen in the signal flow diagram below.

As an example the two sections can be used with different settings to independently control the VCA and VCF of any standard analogue voice patch.

Pipe

ADDAC are using a standard Melodica pipe into an air filter that will keep condensation away from the sensor. The air filter is then connected to the frontpanel sensor input using a silicone tube.

Sensor calibration

[RESPONSE] is the main control to calibrate the pressure curve, the knob goes from exponential to logarithmic with linear at 12 o'clock. Exponential will be more reactive to high pressures, logarithmic to lower pressures.

Hold function

This feature allows to hold the current voltage value with the hold is engaged (button led on), the state can be changed either by the push button in a latching manner (push to change state) or via the gate input in a momentary manner (hold on while gate is on)

Extra Pipe

Extra Pipes are available separately.

Tech Specs:
10HP
4.5cm deep
70mA +12V
40mA -12V

Notes: Based on the ADDAC501 Complex Random module, the 511 expands the concept to become an even more powerful random/stochastic voltage generator. Four channels, all capable of being used for envelopes, modulation sources, sequencers and much more.

Supplier's Notes:
This module greatly expands on the principles of the ADDAC501 Complex Random from 2013.

This is a fully fledged 4 channel voltage generator capable of all things random, with quantization, probability, distribution, interpolation, time control, clock, states and a 32 step sequencer.

The module operation relies on its screen for all parameter editing, each button accesses one single page where parameters can be changed allowing a fast and fluid workflow across all settings.

Long presses on all buttons have a secondary function allowing fast Channel selection plus Mute and Hold functions.

The combination of having 2 Encoders with Push buttons allow swift navigation and editing across all pages and their settings.

Tech Specs:
20HP
4.5cm deep
200mA +12V
100mA -12V

Notes: A typically well thought-out approach to matrix mixing from ADDAC, the 814 is a stereo, expandable 6x6 design with separate control and in/out modules. Suitable for line/synth level audio or CV.

Supplier's Notes:
Introducing ADDAC's take on matrix mixers, a 6x6 stereo matrix easily expandable to larger configurations.

Matrix mixers may need some time to get used to, but they are very much self-explanatory, each knob controls the volume of a matrix point routing the respective input to the desired output. The flexibility of a matrix mixer is far superior to a standard mixer, the possibility to route any input to any single or multiple outputs allow for very complex chains, combining parallel and series processing while easily reconfigurable without any extra patching.

All Inputs Left channels are normalled to the Right Inputs.

Blank areas on the left and bottom edges of the panel allow for the user to write all the inputs and outputs sources that each channel is connected to.

Different coloured knobs for faster visual recalling: Black for A,C,E Outputs Dark Red for B,D,F Outputs Cream knobs for potential feedback diagonal: 1A, 2B, 3C, 4D, 5E, 6F.

DC coupled circuitry, can be used to mix both audio or cv signals.

Jumpers on the back of both modules allow the user to set each channel independently to Line or Synth Level, making it easier to integrate with external sources, sound processors or guitar pedals.

Internal connections

The control and input modules are connected via a large 34 wire ribbon cable, only the control module needs to be connected to the Busboard.
Extra IDC sockets are used for connecting larger configurations like 12x12 or 18x18.
Other configurations are also possible: 6x12, 12x6, 12x12, etc...
Up to 12x12 all ribbon cables are provided, for larger matrixes custom ones will be necessary, contact us directly if planning to go BIG.

Potentiometers

Although ADDAC System are using Thonk's Tall Trimmer Topper for Knobs all potentiometers used have metal shaft and are not plastic trimmer potentiometers.

Tech Specs: 25HP + 8HP (33HP total, 4.5cm deep, 140mA +12V, 140mA -12V

Notes: Bartender is the centerpiece of the mixer system. Four stereo channels, with two stereo aux send and two stereo returns. Each channel can be used in a mono mode where both channels are mixed. If you want to do eight channels of mono, you can put the channels in stereo mode (I know it feels backwards) and then use the pan control to control the crossfade between each channel, and then take the mono output. There is a built in cueing system so you can monitor channels in your headphones and control the blend with the main output. You can expand a Bartender with both a Barback and/or another Bartender. When connecting two Bartenders, the main level control on the 'expander' Bartender acts as a group control.

Notes: Two fuzz channels based on the fuzz face circuit with a built-in pickup simulator.

Gnarly is a 7 knob beast that will destroy whatever you throw at it. It has many dead zones in the pots that will adjust based on the position of other pots. It's all about finding the sweet spots and living on those fine edges. The transistor pairs on this section are replaceable.

Oomph is a 5 knob bass friendly take on the fuzz face and compliments the upper harmonics of the Gnarly section.

Pickup simulator - Fuzz circuits offer unique sound when paired with the inductance of the pickup coils in a guitar. This why it is often suggested to have fuzz pedals as your first in a pedal chain. So After Later built-in a coil to simulate your eurorack signal being emitted by a guitar pickup. After Later also included a pickup simulator output so you can use it to interface with other fuzz instruments (pedals, modules, etc.).

As an added oddness - you can also input your guitar into the pickup sim output (just don't plug anything into the normal input). This will still get you Eurorack level output. Please don't input Eurorack levels into the pickup sim output.

Tips - Experiment with the pickup simulator and buffered signal. Use the PS.Level to keep the signal low, borderline on cutting out. You find lots of joy in the gnarly section by keeping this level at the edge.

Width: 10hp
12V: 15mA
-12V: 10mA

Notes: Keanu is a partnership with Tim Held and Podular Modcast. At its core, Keanu is a standard 4x4 matrix mixer and VCAs on each output and switch to choose between unipolar or bipolar controls. After Later have also added modulation sources normalled into each channel. So you get some great modulation variety, but can also mix in your external sources.

Channels 1 & 2 CVs are clockable looping function generators with controls for rise/fall lengths, and equipped with end of rise/fall trigger outputs.

Channels 3 & 4 are each a "meandering" voltage source, created by 3 LFOs that are all at different frequencies. There are 3 CV inputs (total) to control their individual rates. You can also add slew to each channel individually to change the oscillators from square to triangle, and this slew also applies to external voltages sent into their channel.

Notes: 8 channels of audio or modulation over ethernet. There are two modules and a 3' CAT7e cable to connect them together. There are 8 total channels that are unbuffered and bi-directional. The primary usage is to connect two cases or just send a bundle of signals from one part of your larger case to another. You also get the option of buffering up to four channels on each side. This gives you a local copy of the signal and sends buffered copy to the other module, saving you from having to use a MULT to keep a local copy.

Some notes:

When one side of the Light Rail is in buffered mode, you cannot send signals from the opposite side on those 4 buffered channels (the other 4 channels can still be used in bi-directional mode)

If you are after a different longer/shorter cable, you will get the best performance with CAT7e as it offers the shielding, which is used for the ground.

While the cross channel bleed is minimal, you will notice some very minor cross talk between the channels.

Notes: The MCO MK II is a highly versatile digital VCO and voice module inspired by 90s/00s digital synths shrunk into just 6HP.

It offers a broad collection of unique, high-quality synth voices, each with extensive, customizable parameters. These parameters can be directly controlled or modulated through assignable internal and external sources. Certain per-voice parameters support audio-rate modulation, including FM, sync, and DSP. Each voice also supports up to four-voice chords, external-triggered envelopes, multiple LFOs, and dual audio outputs for comprehensive desktop like synth functionality.

Voices include a multi dimensional wavetable oscillator based on the original MCO, a complex additive synthesis engine, a multi mode 'JP' type digi-synth, a lush virtual analog implementation, a fully featured vocoder, a bass synth for both kicks and sub sonic tones and finally arebirth and porting of our discontinued SID GUTs chip voice.

Each voice includes factory presets as well as the ability to store and recall user presets. All state is preserved across power cycles.

The MCO is designed to be familiar, quick and easy to use with a high resolution colour display and a rich visual user interface.

A USB-C connection allows for easy firmware updates, user wavetables upload and device config backup and restore. Axon expander modules are also supported to increase CV control options.

Notes: MEGA-TANG Expander MT-EX1 is a new expander module for the MEGA-TANG mixer.

The MT-EX1 adds 4 additional inputs. It also adds a mono line level input with level and send controls, two extra fixed inputs each with send controls and a fixed stereo input. Note the MEGA-TANG only supports a single expander at any time.

Technical Specs

Size: 4HP
Depth: 32mm (approx)

Notes: MEGA-TANG Expander MT-EX2 is a new expander module for the MEGA-TANG mixer.

The MT-EX2 adds an extra effects send/return for all channels. It also adds an extra send and return to your MEGA-TANG. Note the MEGA-TANG only supports a single expander at any time.

Technical Specs

Size: 4HP
Depth: 32mm (approx)

Notes: THE SBG-PRO supports mono, stereo, balanced, and unbalanced input and output via 6.35mm jacks with level matching controls with clipping indication. The module features both direct and voltagecontrolled equal power crossfading between wet and dry sources.

Additionally, an expression input, along with the included 'floating ring' cable and conditioned output, ensures safe, voltage-limited CV control of external devices from your modular system.

The module extends its sibling, the original S.B.G, by adding full size stereo balanced jack connections and voltage control focusing more on connectivity with not just pedals but also pro audio equipment including rack effects, 500 Series modules and mixing consoles.

Notes: SWEnigiser Proto VCF/A

Enigiser multimode filter and VCA in 12hp. Circuit based on originalEnigiser prototype kindly loaned by Anthony Linell of Northern Electronics.

VCF
Unique configuration with 3 x 4 filter modes
2x audio input with drive
2x cutoff CV attenuverter inputs
1x cutoff CV input, tunable to 1v/oct

VCF output normalized to VCA input.

VCA
1x audio input with gritty drive, normalized from VCF output
2x CV input. CV1 knob adds offset for drone etc.
CLIP switch for old/new revision Enigiser diode setting adjusting drive character.
+12V 22mA
-12V 22mA
Skiff friendly
Includes power cable, 4 screws+ plastic washers

Available in sand blasted silver and black panel versions.

Notes: SWEnigiser Proto VCF/A

Enigiser multimode filter and VCA in 12hp. Circuit based on originalEnigiser prototype kindly loaned by Anthony Linell of Northern Electronics.

VCF
Unique configuration with 3 x 4 filter modes
2x audio input with drive
2x cutoff CV attenuverter inputs
1x cutoff CV input, tunable to 1v/oct

VCF output normalized to VCA input.

VCA
1x audio input with gritty drive, normalized from VCF output
2x CV input. CV1 knob adds offset for drone etc.
CLIP switch for old/new revision Enigiser diode setting adjusting drive character.
+12V 22mA
-12V 22mA
Skiff friendly
Includes power cable, 4 screws+ plastic washers

Available in sand blasted silver and black panel versions.

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


Dimensions is a true stereo chorus effect for the Eurorack modular system featuring two algorithms. The first is a direct port of our Fluid chorus plug-in, and the second is taken from the unit's namesake. With automatic routing based upon what you plug in the I/O, Dimensions can do mono->mono, mono->stereo, and true stereo chorus duties.

Dimensions' Mode A operation is a ludicrously thick chorus. Most chorus effects have either a single delay line or a pair. Dimensions has six of them, each with its own modulation scheme. The Mode B operation changes the routing to match the vintage rack unit, but keeps the controls available. This results in a subtly different, but equally thick and appealing, effect.

Notes: Voltage-Controlled Voltage Processor

A*B+C is the ultimate utility for audio and control voltage. It performs multiplication, addition, and attenuation, providing a simple way to create complex signal interactions and timbres.

It is formed by two channels, each of which takes two input signals (A and B), multiplies them (A × B), and then adds a third signal (C) to the result.It is formed by two channels, each of which takes two input signals (A and B), multiplies them (A × B), and then adds a third signal (C) to the result.

By combining different blocks, many functions can be achieved:

Audio Processing:

Four-quadrant amplitude modulation (ring modulation)
Linear VCA
Signal mixer
2x gain amplifier
Phase inverter
Attenuator

CV Processing:

Voltage-controlled attenuator
CV mixer
Attenuator
Inverter
VCA
DC generator

Features

DC Coupled
Signal LED Indicators
B and C INs normalled to 5

Specs

Current Draw: +12V: 50mA, -12V: 50mA +5v : 0mA
Width: 6HP
Depth: Assembled version 25 mm
Depth: DIY version 35 mm
Designed, kits prepared and assembled in Barcelona.

Notes: Quad Attenuator/Inverter, Splitter, and Offset Generator

Scale your audio or CV sources and route them to various destinations with this versatile utility. It consists of four identical unity gain amplifiers. Each amplifier can multiply an incoming signal by values ranging from 0 to 1 (for attenuation) or from 0 to -1 (for inverting attenuation). The input of each channel is normalled to the input of the next channel, allowing for easy signal routing from one input to the subsequent ones.

The first channel is normalled to 10V, enabling the module to function as an offset generator when no input is connected.

Features

Inversion switch per channel.
Precise zero at the left side of the pots.
Four level LEDs indicate output level and polarity.
Cascaded input topology

Specs

Current needs: +12V: 60mA, -12: 50mA, 5v:0
Width: 4 HP
Depth: Assembled version 25 mm
Depth: DIY version 35 mm
Designed, kits prepared and modules assembled in Barcelona.

Notes: Combine up to four audio and or CV sources into one output, with independent manual level control.

It can be used as a four-channel mixer or as two separate two-channel mixers, depending on the connection.

If a cable is connected to the Master output but not to the 1+2 output, all channels will be summed at the Master output. If both the Master and 1+2 outputs are connected, the Master will output the mix of channels 3 and 4, while the 1+2 output will provide the mix of channels 1 and 2.

Each pair of channels has an LED indicator that shows the presence of a signal.

Notes: A really interesting synth voice module from Befaco, the Oneiroi specialises in ambient pads, drones and soundscapes thanks to a combination of oscillators, looping, effects and randomisation. True stereo textures from a single module.

Supplier's Notes:
Experimental synth voice focused on ambient pads and drone-like soundscapes.

Shape your performance

At its core, there is a Sine Wave Oscillator, Wavetable/Supersaw, and a joyful Looper. This is followed by an FX section featuring a Multimode filter, a Resonator, a Delay, and a Reverb.

His randomizer creates instant patches at the touch of a button.

The Looper can record the external input or the output with "Sound On Sound" looping.

5-second Looper records either the stereo input or the module's output, the Wavetable oscillator uses the Looper buffer

The atmosphere creator

A full-stereo synthesiser that easily creates dense atmospheres for hypnotic music or cinematic sound design.

Featuring three oscillators, four effects, a looper, modulation with complex routing, and a randomizer.

Powerful randomizer with four different targets that acts in different ways depending on the position of the two switches, three levels of intensity and undo/redo.

Specs

Current needs: +12V=200mA, -12V=60mA
Width: 30 HP
Depth Assembled Version: 25mm
Designed, kits prepared and assembled in Barcelona.

Notes: Voltage-controlled lag processor and slope detector

Transforms stepped notes into smooth acid slides with independent speeds for both upper and lower notes.

The onboard slope detector generates gates while the output is rising or falling, allowing events to be activated when moving to upper or lower voltages.

Additionally, it can convert a gate signal into an Attack-Sustain-Release (ASR) envelope.

The shape control feature helps balance speed versus input range, enabling quicker speed while sliding to further notes allowing for time compensated portamento.

Features

Perfect pitch tracking (error < 1 mV)
Independent rise and fall controls
Assignable CV input for rise and fall times
Three selectable speed ranges
Fader-based interface allows for one-handed adjustment of rise and fall times

Specs

Current needs: +12V: 20mA, -12: 15mA, 5v:0 on additional rails
Width: 4 HP
Depth: 25 mm (including power connector)
Designed, kits prepared and modules assembled in Barcelona

Notes: Alpha Duo is a stereo precision VCA with ring modulation, overdrive and distortion.

Alpha Duo's VCAs have three modes:

1) Two quadrant, for classic VCA behaviour
2) Four quadrant, where the VCA responds to both positive and negative Gain CVs. This creates a classic ring modulator.
3) In four quadrant separate (4S) mode, each of the two VCA channels is controlled by separate gain CVs, turning Alpha Duo into two independent VCA/ring modulators.

Alpha Duo also features three drive modes.

1) In Drive Mode zero the overdrive circuit is not active, giving a clean signal.
2) Drive Mode One is a tube style soft overdrive. Like a tube, the positive and negative parts of the waveform are distorted differently, producing a pleasing, warm fuzz.
3) Drive Mode Two is a harder clip - more like a transistor amplifier - for a harder edged distortion.

Alpha Duo's signal path is DC coupled, so it's great for processing CVs as well as audio.

Specifications:
Width: 10HP
Depth: 22mm excl. power cable. Approx 32mm inc. shrouded power cable
Power Requirements:
+12v: 200mA
-12v: 50mA
+5v: 0mA

Inputs:
Signal (Zero attenuation): +/-5v nominal, +/-12v max
GainCV [Zero attenuation]: +/-5v nominal
Pan CV [Zero attenuation]: +/-5v nominal

Outputs:
Dual/Stereo: +/-5v nominal, +/-11v max

Notes: At its heart, Alpha Pro is four identical VCAs, each with overdrive and stereo outputs. However, it's also possible to link any of the VCAs together to form a voltage controlled mixer. This flexibility allows Alpha Pro to replace a bank of VCAs, sub-mixers and even your output mixer.

Each VCA has two Signal inputs and a summing mixer with individual attenuators.

There are two mix buses, allowing each VCA to act stand-alone or as part of the mix. So you can configure two separate sub-mixes, with any of the VCAs contributing to the mix, or use all channels to make an 8 input, stereo output main mix.

The VCA gain is controlled by the Initial Gain knob, and two Gain CVs - again mixed together, each with an attenuator. Having two Gain CV inputs allows for more complex modulation possibilities without needing another CV sub-mixer.

Gain response can be set to exponential or linear.

The XING switch enables zero crossing detection to prevent clicks on very fast CV inputs.

Two drive modes are available, a soft clip and a harder fuzz, with the DRIVE control increasing the gain into the overdrive circuit to increase the effect.

The VCA output is stereo, with manual and CV control of pan - again, with an attenuator.

Alpha Pro is available now as a 'founders edition' which includes the Alpha Switch as standard.

Specifications:
Width: 38HP
Depth: 22mm excl. power cable. Approx 32mm inc. shrouded power cable

Power Requirements:
+12v: 250mA
-12v: 100mA
+5v: 0mA

Inputs:
Signal (Zero attenuation): +/-5v nominal, +/-12v max
Gain CV (Zero attenuation): 0-5v nominal
Pan CV (Zero attenuation): +/-5v nominal

Outputs:
Stereo: +/-5v nominal, +/-10v max
With Drive Modes 1&2 outputs are normalised to around +/-5v max

Notes: Foxtrot is a quad, multimode virtual analogue filter with three different classic filter types.

Each of the four filter channels can be:

1) A ladder filter, based on the classic MOOG designs from the '60 and '70s
2) A Sallen-and-Key filter based on the Korg 35 module used in the MS-20
3) A State Variable filter as used in the Oberheim SEM

Each filter type produces Low Pass, Band Pass and High Pass responses which can be morphed between using the front panel control or CV.

In addition, any or all of the filter channels can be linked together internally producing a parallel filter bank controlled by a single cut-off control or CV. Check out some of the examples for how amazing this sounds.

The AUX CV input can be switched to allow CV control of the filter response, resonance or pan of each filter channel's dual outputs.

Finally, each filter can be overdriven to accentuate the unique sound of each filter type.

Specifications:
Width: 38HP
Depth: 22mm excl. power cable. Approx 32mm inc. shrouded power cable
Power Requirements:
+12v: 250mA
-12v: 100mA
+5v: 0mA

Inputs:
Signal (Zero attenuation): +/-5v nominal, +/-12v max
Cut-off CV (Zero attenuation): 0-5v nominal
AUX CV (Zero attenuation): +/-5v nominal

Outputs:
Dual Outputs: +/-5v nominal, +/-10v max

Notes: Oscar DSF is a complex, stereo Voltage Controlled Oscillator, based on the mathematics of Discrete Summation Formulae.

The Discrete Summation Formula used in Oscar DSF produces sounds rich in harmonics (or 'partials') in a similar way to FM.

The mathematics of DSFs is more complex than FM, but the way that you, the user, get the sounds you want is usually simpler. The basic sound is controlled by just two, intuitive knobs (with CVs, of course).

Oscar DSF can sound like a traditional oscillator, and it can make the usual clangs and tings associated with FM oscillators. It can handle fat bass sounds, or evolving ambient drones.

Oscar DSF has two complete DSF based, complex oscillators, controlled by the same basic pitch CV, but with a pitch offset control which can detune one oscillator up to i1 octave.

The output of the each oscillator passes through another complex FM stage, which acts like a wave folder. Technically, it's actually an FM operator with the carrier frequency set to zero. It sounds great, whatever you call it.

The final piece of the signal chain is a simple VCA, allowing Oscar DSF to be used as a stand alone synth voice with the addition of an envelope generator, or some other source of modulation.

Specifications:

Width: 10HP
Depth: 22mm excl. power cable. Approx 32mm inc. shrouded power cable
Power Requirements:
+12v: 200mA
-12v: 50mA
+5v: 0mA

Inputs:

VPO (Zero attenuation): 1 volt per octave
PAR CV[Zero attenuation]: +/-5v nominal
FOLD CV [Zero attenuation]: +/-5v nominal
PAN CV [Zero attenuation]: +/-5v nominal

Outputs:
Dual/Stereo: +/-5v nominal, +/-11v max

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: What does this do?

This module takes two external sources (patched) from an external other module. It wants a triangle waveform and a square waveform.

The internal analogue circuitry will make you a variety of wave forms, selectable by knob. You can also blend the output with a slicer and a sub harmonic generator on the second channel.

This moduleis a considerable upgrade from a typical VCO. The wave shapes found on this product is the result of using going 15+ years' worth of analogue circuits.

You get two channels of waveform banks. Each can output something separate and different.

There is CV control for the Waveform selection banks, Sub harmonic selection bank, and Pulse Wave Modulation on channel 2.

Does this module require another module?

Yes, you need an oscillator VCO module. Best compatibility is a VCO with triangle wave and square wave.

Self oscillating sine wave from a VCF module can be used but will not take full advantage of the module.

Stack: 2 Level PCB sand which

Caution, not skiff friendly. Compatible with POD cases by 4MS

Width: 12hp

Current: +115mA -110mA

Notes: What does this do?

This is an analogue filter with a separate 3 channel mono mixer, and VCA combo. There is also an internal envelope generator with Decay. All this product needs is a VCO and a trigger signal to complete a mini voice.

The outputs on the filter are meant to be manually patched into one of the VCA audio inputs on the module to complete the mini voice. You can mix and match to create custom filter types.

The Feedback on the product 'Rez', is what makes this sound like an MS20 filter. There are diodes, used as a limiter, and also to wave shape when in self oscillation mode.

Features:

-2 audio inputs with 2 level control knobs.

-Bi-polar FM for the filter.

-Mod input with level knob for the filter.

-FCV Filter CV direct input for the filter.

All CV inputs for the Filter are 1V per octave, Exponential.

-REZ CV

-VOLT CUT output. +5v/5v output. Used to remote control another filter, with the master 'Cut' knob.

-Internal Envelope Generator, with Level Sends to VCA and Filter.

-Separate VCA circuit, with 3 channel mono mixer input.

-1 CV input for the VCA. 'VCV'.

-1 VCA output.

The filter will self oscillate into a sine wave and does track 1v per octave.

Width: 16HP

Current: +65mA,-65mA

PCB Stack: 1 Level, Skiff compatible.

Notes: What does this do?

This is an analogue filter based on the 1974 SEM filter. The original early design did not self oscillate into a sine wave. This one also does not self oscillate. The sound, however, makes up for that. You get the original notch sweep, and incredible band pass mode at such a low friendly price.

Added Features

-Onboard VCA
-Onboard envelope generator (decay)
-Variable trigger input circuit. Emulates a Vactrol.
-Dual audio input possible

Width: 10HP
Depth: 1 PCB stack, skiff compatible

Notes: What does this module do?

This is a sound generator, specifically, a metallic shimmer generator. This module contains all the onboard processing needed to complete a percussive voice. There is a manual XOR shimmer generator, and a static cowbell like generator. You can also turn those two off, and just use the internal white noise (sizzle).

There is an onboard High Pass Filter with two resonant peaks. One is controlled by knob, the other is selected by toggle switch. Labelled Q1 and Q2. An Auxilary input has been added so that you can process sound through the high pass filter.

There is also a Sweep Knob which internally patches the decay to the high pass filter.

A white noise generator is used to blend in with the shimmer generator. Labelled SIZZLE.

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

Instead of adding an 'accent' control. Both triggers have been made to be 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.

Width: 10HP
Current: +55mA,-32mA

Notes: Tiptop's reissues of iconic Buchla modules continue with the 285 frequency shifter. Edgy, twangy harmonic modulation with ring mod options and stereo operation via sum and difference outputs.

Supplier's Notes:
The 285t combines two sets of functions: the top section features a frequency shifter, while the lower section includes both balanced modulation and classic ring modulation, all with voltage control. The frequency shifter can shift incoming audio using either its internal oscillator or external audio. Both SUM and Difference outputs are available simultaneously for analogue stereo widening effects and more.

As Tiptop Audio continues its aural odyssey of preserving and transforming the hallmark engineering prowess of Don Buchla's namesake synthesizer modules, the 285t brings a constellation of blistering sonic-contouring tools to your Eurorack array. Like its predecessor, the Tiptop Audio Buchla 285t is a menagerie of modulation madness, offering variable degrees of ring, frequency, and amplitude styles of modulation. Plus, its dyad of modulation sub-modules operates independently, with dedicated audio and CV I/O for each, functionally giving you the sum of performance possibilities you'd get with two modules, all in one instrument. Suffice it to say: Sweetwater's synthesists commend Tiptop Audio on capturing the electric magic of Don Buchla's imaginative engineering while transposing it for the world of Eurorack to experience. For a constellation of timbral sculpting and summitting heretofore unknown peaks of daring synthesis exploration, the Tiptop Audio Buchla 285t Frequency Shifter module is your key. Discover what awaits at the fringes of Eurorack possibility!

Note: This module is not compatible with Buchla system voltages. CV signals require a distinct connectivity configurations. Please contact your Sweetwater Sales Engineer with any questions or concerns regarding compatibility or use in your Eurorack case.

Type: Frequency Shifter
Depth: 1.77" (45mm)
HP Size: 18HP
Power Usage: +12V/70mA, -12V/40mA
Power Supply: Requires Eurorack Case and Power Supply
Manufacturer Part Number: 285t

Notes: ***B-STOCK: Box opened, product in perfect working order***


Tiptop's reissues of iconic Buchla modules continue with the 285 frequency shifter. Edgy, twangy harmonic modulation with ring mod options and stereo operation via sum and difference outputs.

Supplier's Notes:
The 285t combines two sets of functions: the top section features a frequency shifter, while the lower section includes both balanced modulation and classic ring modulation, all with voltage control. The frequency shifter can shift incoming audio using either its internal oscillator or external audio. Both SUM and Difference outputs are available simultaneously for analogue stereo widening effects and more.

As Tiptop Audio continues its aural odyssey of preserving and transforming the hallmark engineering prowess of Don Buchla's namesake synthesizer modules, the 285t brings a constellation of blistering sonic-contouring tools to your Eurorack array. Like its predecessor, the Tiptop Audio Buchla 285t is a menagerie of modulation madness, offering variable degrees of ring, frequency, and amplitude styles of modulation. Plus, its dyad of modulation sub-modules operates independently, with dedicated audio and CV I/O for each, functionally giving you the sum of performance possibilities you'd get with two modules, all in one instrument. Suffice it to say: Sweetwater's synthesists commend Tiptop Audio on capturing the electric magic of Don Buchla's imaginative engineering while transposing it for the world of Eurorack to experience. For a constellation of timbral sculpting and summitting heretofore unknown peaks of daring synthesis exploration, the Tiptop Audio Buchla 285t Frequency Shifter module is your key. Discover what awaits at the fringes of Eurorack possibility!

Note: This module is not compatible with Buchla system voltages. CV signals require a distinct connectivity configurations. Please contact your Sweetwater Sales Engineer with any questions or concerns regarding compatibility or use in your Eurorack case.

Type: Frequency Shifter
Depth: 1.77" (45mm)
HP Size: 18HP
Power Usage: +12V/70mA, -12V/40mA
Power Supply: Requires Eurorack Case and Power Supply
Manufacturer Part Number: 285t

Notes: The legendary Buchla 259 complex oscillator gets the officially licensed Eurorack treatment from TipTop Audio. One of the most versatile and characterful VCOs ever made, with endless cross-modulation options and wave shaping features. Iconic.

Supplier's Notes:
The 259t is the largest and most complex analogue oscillator from Don Buchla's legendary 200 modular synthesiser. The 259 originated the concept of the "Complex Oscillator" in the 1970s and has been reissued by Buchla and Tiptop Audio in Eurorack format. The module consists of two oscillators, called the Modulator and Principal, with a middle section that provides voltage control over the internal modulation paths between the two oscillators, resulting in highly complex timbres. Additionally, the principal oscillator passes through multiple unique voltage-controlled waveshapers and crossfaders for further signal processing. The module's pitch can be controlled with 1V/OCT or via its internal auto-tuner and ART control to create precisely pitched notes.

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

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

Notes: Tiptop bring the iconic low-pass gate to their range of Buchla reissues. The 292t offers four channels which can be mixed or treated individually, with adjustable modes for low-pass filtering, VCA or the classic low-pass gate combo.

Supplier's Notes:
The 292t is a reissue of Don Buchla's low-pass gate from the 1970s, adapted for the Eurorack modular format. The module consists of four independent low-pass gates (LPGs) and retains the natural, percussive sounds of the original, all of which can be manipulated in real time using control voltages. The 292t allows you to mix up to four sounds from their individual outputs or through a summed output, functioning as a mixdown. Each channel can operate in one of three modes: a low-pass filter with a variable cutoff, a VCA with controllable gain, or a combination of both, producing Buchla's classic low-pass gate effect.

Notes: Part of TipTop's exceptional series of Eurorack-format Buchla modules, the 264t provides four sample-and-hold circuits, plus a logic circuit designed to control polyphonic patches. Deceptively simple but surprisingly creative, like most Buchla modules.

Supplier's Notes:
Four independent sample-and-hold circuits, plus a specialized logic circuit for expediently implementing polyphonic patches.

Sample-and-hold's are essentially one-cell analog memories. They are useful for "remembering" the instantaneous value of a control voltage (a detected envelope, for example), for generating equally spaced steps from a constant slope input (as from a 281t envelope generator), and for converting any continuously changing voltage (a random voltage, for instance) into a series of discrete values.

The 264's sample-and-hold circuits have two operating modes: sample and track. In the sample mode, the value of the input is sampled and applied to the output whenever a pulse is received. The output remains at this value until the next pulse arrives. The track mode diers in that an input is applied to the output for the duration of the pulse. The output tracks the input until the end of the pulse and remains at a constant value until the next pulse.

To use the 264t as four independent channels set the separate/common switch to separate. A single CV can be set to all four channels by setting the operate/common to common and plug CV in the the back jack on the with right side.

The Model 264t includes a polyphonic adaptor, which performs the logic necessary to implement four-voice polyphony. Facilities are incorporated for fine tuning and f.m. modulating the oscillators; light emitters display the adaptor's operation.

Specifications:

Size: 18 HP - Depth: 45mm
Power: +12V 60mA / -12V 30mA

Notes: Discover the new dimension of your sound design with the ultra-compact 2HP wide ADSR Envelope Generator in Eurorack format. This precise tool is specially designed for synth enthusiasts who don't want to miss out on professional dynamic control in their Eurorack system. Despite its small size, this ADSR generator offers a plethora of features that will take your soundscapes to the next level.

Compact design

With a width of only 2HP, this envelope generator fits seamlessly into any Eurorack setup without wasting valuable space.

Customise your sounds with full ADSR control - Attack, Decay, Sustain and Release can be intuitively adjusted to bring your sounds to life

There is also a built-in LED display that gives you real-time visual feedback on the current phase of the envelope. This way, you always have an overview of the dynamic progression of your sounds.

With the ability to choose between three timebase settings (S, M, and L), you can flexibly adjust the envelope time base to suit your musical needs. From fast, crisp pulses to long-drawn-out, atmospheric evolutions, expand your expressive possibilities.

Manual Trigger

A special highlight is the manual trigger button. This allows you to trigger the envelope independently of external signal sources, ideal for spontaneous performances or experimenting with new sound ideas.

Dimensions
2 HP
42 mm deep

Current Draw
15 mA +12V
5 mA -12V
0 mA 5V