ADDAC System Announces 816 Percussion VCA

"If driven to the extreme it will show its teeth and gnarly bite and chew on your cochleas with all its might"

August 19, 2025

Lisbon, Portugal, August 19, 2025 — ADDAC System announces its latest Eurorack module, the ADDAC816 Percussion VCA - an all-purpose VCA with an envelope section offering special versatility for percussion-based sounds.

The module has been named "Percussion VCA" since most percussion instruments have sharp attacks with variable decays just as its AD Envelope. However, this can be used for any purpose where a VCA is needed including for CV signals due to its DC coupled signal path.

While deep in the Percussion VCA's soul there exists a standard VCA with exponential response that can be used as such, in its heart pulses an AD envelope with a sharp attack and a variable decay internally connected to the VCA control input. When it opens its mouth it can whisper in your ear - but if driven to the extreme it will show its teeth and gnarly bite and chew on your cochleas with all its might.

On the Percussion VCA, the AD envelope has a fixed short attack, just enough to avoid the typical “click” that happens when using a gate signal to control a VCA. Meanwhile, the envelope decay can be controlled via its knob or voltage-controlled using the CV input and attenuverter, lending an enormous degree of sonic versatility.

Finally, the Percussion VCA can also be driven from a simple gate signal while controlling its decay, making it easy to plug a noise source, VCO, or any audio signal and turn that source into a percussive element.

The new ADDAC816 Percussion VCA will also be available as a full DIY kit. For more information including product specifications, or to order, please visit the product page at: https://www.addacsystem.com/en/products/modules/addac800-series/addac816.

About ADDAC System
ADDAC develops advanced instruments for sonic expression. The company started back in 2009 with an ambition to explore the potential crossover between analog synthesizers and computers. Because its first creations sparked a lot of attention, ADDAC decided to work hard and put them in customers' hands. Today our product line is focused on a new breed of hybrid synths, that make use of the best of both the digital and analog worlds. We've grown to be able to reach thousands of enthusiastic clients, friends and collaborators. Always looking into conceptualizing and developing the most exquisite instruments, we hope you're able to join and share this passion with us.

Our solutions can be found in many personal studio throughout the world, owned by musicians in several planes of stardom. We especially appreciate seeing them being used in a very wide range of musical genres.