ADDAC611

This module was developed upon the Tubaz Filter which was released in 2014 by Gotharman but is currently no longer in production. We loved the original module so much that we officially licensed its circuit and expanded it to feature several new functionalities.
 
Tubaz was not a “typical” filter, it’s like a poodle who believes it's a German Shepard, while in reality it’s a big chested, short legged, character-packed street mutt. 
 
Here’s a paragraph from Gotharman regarding the original design:
“I designed it with the purpose of adding crunch, edge and distortion to my eurorack system. It is not an ideal bandpass filter, that cuts off all frequencies above and below the center frequency.
Because of its high drive, there are, in most cases, some bleedthrough of the harmonics, that should have been cut off. You might consider calling it a ”Band Add” filter. The main purpose of it, was to add edge, not to be a perfect bandpass filter.”
 
While everything he mentions is still true we believe he was being modest: it’s a dirty, gritty, growling and whining monster which promises you some of the most peculiar filter sounds you’ll ever hear.
However do not classify it as a “weird” distortion unit just yet because besides this hairy character it can be easily tamed (using lower volume levels) and then, with some care and intention from the user, it will transform itself showing it’s feline purrrrr and cuddle sweet and caring, or like any good mutt, showing up at night all happy, wet and dirty from a full dog’s day and will lay down at your feet while wiggling its tail howling as yawning, just happy to be back home.
 
As such, standard volume principles do not quite apply to these units, the Audio Levels will go up to x2 amplification, Drive will go up to x11 and master outs go up to x2. The combination of these will cover all diferent qualities it can present. Overall sound can be distorted pre-Tube (raising input levels), in Tube (raising drive) or post-Tube (raising Out levels). 
Higher Inputs and Drive will always be gritty, lower Inputs and Drive volumes together with higher Output levels will make the overall behaviour more mellow and closer to what a typical filter would behave like.
 
No standard expectations should be considered when acquiring these units. All of the tubes were built in the 70’s and were bought from various sources, we always kept the premise that no tube was a bad tube (unless not really working), so due to each specific characteristics no module will sound exactly the same, making each unit particularly unique. This uniqueness will be particularly evident on their resonance/self-oscilating timbre as well as in their own microphonic qualities.
 
Regarding power and current draw, the module is designed using a low power tube, so it won't starve your eurorack power supply.

Features:
3 Audio Inputs with attenuators (when not patched Input 3 also works as a feedback attenuator from the module’s BP output.)
VC Drive, Cutoff & Resonance with attenuverters
LP & HP Outputs with trimmer attenuators
BP & Mix Outputs with Trim Pot attenuators
VC Mix with attenuverter
Phase inversion switches for Mix and BP outputs
Three leds monitor post: Drive, Mix & Filter.
 
Tech Specs:
12HP
3.5cm deep
90mA +12V
60mA -12V

Note: All specifications and features are subject to change without previous notice.

In case you're wondering: Sure! We can get you a custom coloured front panel for the ADDAC611.
It has an additional cost of 70€ and takes 4 to 6 weeks to be ready.

It can be done in either Red, Green, Blue, White, Silver Gray, Yellow, or Gold.

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.

Thanks for your interest in the ADDAC611!

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.

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