ADDAC406

This module introduces a unique approach to rhythm, it can add complexity to any pattern by superimposing extremely odd divisions creating syncopation and rhythmic complexity. It provides extensive possibilities for rhythmic creation, transforming static rhythmic patterns into dynamic and complex rhythmic layering enhancing the rhythmic foundation set by the primary clock. It allows users to explore and generate rhythms in previously unattainable ways.

The module operates by taking an input clock signal and generating two new independent outputs that dynamically accelerates or decelerates the BPM toward a user-defined destination BPM over a specified number of beats. Meaning that the output generation is never constant, they will always be dynamically accelerating or decelerating, where no interval between two pulses is the same, the current interval will always be shorter or longer than the previous interval.

This principle will generate unique metrics that when played against the main clock will create extremely unique patterns, from simple swing /syncopation to beyond free-jazz completely unexpected while mathematically justified metrics.

Tech Specs:
8HP
4.5cm deep
110mA on +12V
20mA on -12v

While working on and testing the Firmware i made a series of recordings that were later edited and compiled in this release.
All samples triggered exclusivelly from up to 3 ADDAC406 Clock Benders, all the samples played by ADDAC112s and Erica Synths Drums, minimal editing and post-processing.
This is not intended as a demonstration of the module; however, it does showcase some of its capabilities using my preferred methods.
In all these tracks the main clock triggering all 406s is not used for any other purpose and is never heard.
André Gonçalves 2026

Thanks for your interest in the ADDAC406!

To proceed with a direct purchase, you may fill out the form on our Orders Page.

If you want to obtain it through a shop closer to you, this is our Distributors Page.

In case you're wondering: Sure! We can get you a custom coloured front panel for the ADDAC406.
It has an additional cost and takes 4 to 6 weeks to be ready.

At the moment the ADDAC406 standard panel colour is Black.

A custom colour panel can be done in either Red, Green, Blue, White, Silver Gray, Yellowed Silver, and Dark or Light Bronze.

Print colour varies between Black, White, or Red, Blue and Green. We recommend lighter-tone print for darker panels, and vice-versa.

Please note: we don’t stock custom coloured panels. For every custom order we need to make a single panel order from our panel provider. This explains the panel price and lead time.

Product Safety Information

Eurorack Module

Important Safety Information
This Eurorack module is designed for use within standard Eurorack synthesizer systems and is intended for adult users familiar with modular synthesis and electronic equipment.

Please read this safety guide before installation or use.

General Warnings
1. Electrical Hazards:
• Ensure the power supply matches the module’s specified voltage and current ratings (refer to the product manual). Incorrect voltage can damage the module and pose a safety risk.
• Never connect or disconnect the module while the Eurorack system is powered on.
2. Heat Generation:
• The module may generate heat during operation. Ensure proper ventilation within your Eurorack case to prevent overheating.
3. Sharp Edges:
• The module’s faceplate and components may have sharp edges. Handle with care to avoid cuts or scratches.
4. Small Parts:
• Contains small parts that could pose a choking hazard. Keep away from children and pets.
5. Compatibility:
• This module is designed specifically for Eurorack-compatible systems. Connecting it to non-compatible systems may result in damage or malfunction.

Installation and Use
• Mounting: Secure the module properly in the Eurorack case using the provided screws.
• Power Connection: Verify the polarity of the power cable before connecting to avoid damage to the module or power supply. Use only the included or manufacturer-recommended power cable.
• Operational Use: Follow the module's user guide for instructions on operation. Do not exceed the input/output limits specified.
Maintenance and Handling
• Inspection: Regularly check for loose connections or signs of wear.
• Cleaning: Disconnect the module from power before cleaning. Use a dry or lightly damp cloth; avoid using solvents or water directly on the module.
• Repairs: Do not attempt to repair or modify the module yourself. Contact the manufacturer for support.

Environmental Safety
• Dispose of the module, its components, and packaging in accordance with local electronic waste regulations.

Liability Disclaimer
• The manufacturer is not responsible for any injury, damage, or malfunction resulting from improper installation, use, or modification of this product.

Contact Information

For further assistance, contact our support team at:
Addacsystem, Lda.
addac[at]addacsystem[dot]com

DIY Kit for Eurorack Module

Please read this safety guide before installation or use.

Important Notice & Intended Use
• This kit is intended for adult users experienced in electronics and modular synthesis.
• Assembly, including soldering, is required.
• Proper testing and installation are essential to ensure safe and functional operation.
• The completed module is intended for installation in a Eurorack-compatible synthesizer system powered by ±12V and +5V.
• Use outside this scope may result in malfunction, damage, or safety risks.

General Warnings

Electrical Hazards:
• Ensure the power supply matches the module’s specified voltage and current ratings (refer to the product manual). Incorrect voltage can damage the module and pose a safety risk.
• Never connect or disconnect the module while the Eurorack system is powered on.
• Wrong polarity can damage your module or system. Make sure the module is connected with correct polarity.

Heat Generation:
• The module may generate heat during operation. Ensure proper ventilation within your Eurorack case to prevent overheating.

Sharp Edges:
• The module’s faceplate and components may have sharp edges. Handle with care to avoid cuts or scratches.

Small Parts:
• Contains small parts that could cause a choking hazard. Keep away from children and pets.

Compatibility:
• This module is designed specifically for Eurorack-compatible systems. Connecting it to non-compatible systems may result in damage or malfunction.

Assembly Requirements
• Soldering skills are required to complete the module.
• Ensure a clean, well-lit and ventilated workspace free of flammable materials during assembly.
• Use appropriate tools and safety equipment, such as eye protection.

Testing
• Test the module thoroughly for shorts or incorrect assembly before powering it in your Eurorack system. When the unit has malfunctions due to incorrect assembly, the entire Eurorack system might be damaged. It's a good idea to test it in a separate case with only that single module.
• Use a multimeter or other appropriate tools to confirm proper functionality.

Installation and Use
• Mount securely in a Eurorack case using the provided screws.
• Use only the included or manufacturer-recommended power cable.
• Connect only when the power is off.
• Follow the module's user guide for instructions on operation. Do not exceed the input/output limits specified.

Responsibility
Users are solely responsible for proper assembly and testing. Contact manufacturer support (see below) for assistance if needed.

Environmental Safety
• Dispose of the module, its components, and packaging in accordance with local electronic waste regulations.

Liability Disclaimer
• The manufacturer is not responsible for any injury, damage, or malfunction resulting from improper installation, use, or modification of this product.

Contact Information
Addacsystem, Lda.
addac[at]addacsystem[dot]com