ADDAC System is continuing its steady expansion of modular tools with two new releases that focus on solving practical workflow limitations rather than adding complexity for the sake of it. The ADDAC809S Stereo Chain Router and the ADDAC005 Standalone CV2 Expression both sit firmly in that category. They are not headline-grabbing modules built around spectacle. They are tools designed to make existing systems easier to control, route, and integrate with external gear.
That approach fits with how a lot of experienced Eurorack users actually build their setups. At a certain point, the focus shifts away from adding more voices or effects and toward managing signal flow in a way that supports faster decisions. These two modules address that directly, each from a different angle.
Routing without breaking the flow of a patch
The ADDAC809S Stereo Chain Router focuses on one of the more frustrating parts of working in a modular environment, which is reconfiguring signal chains mid-session. In a traditional setup, changing the order of effects or rerouting a stereo signal usually means physically repatching cables. That breaks momentum and makes experimentation slower than it needs to be.
The 809S removes that friction by allowing stereo signals, including audio or paired CV, to move between different processing chains internally. The routing can be changed using onboard controls like bypass, parallel routing, and series configurations, which means users can shift the order of effects without touching the patch cables themselves.
In practice, that opens up more fluid experimentation. You can move a delay before or after another processor, test parallel paths, or collapse everything back into a direct signal without resetting the entire patch. For live performance or long studio sessions, that kind of flexibility adds up quickly. It keeps the focus on listening and decision-making rather than cable management.
Bridging modular systems with external effects
The ADDAC005 takes a different approach by focusing on integration. It allows CV signals from a modular system to control parameters on external effects pedals that use TRS expression inputs. That might sound simple, but it addresses a gap that a lot of producers run into when trying to connect modular gear with more traditional pedal setups.
Instead of relying on manual control through an expression pedal, the ADDAC005 lets a CV source take over that role. This means parameters on a pedal can be automated, modulated, or sequenced directly from within the modular system. The unit includes standard Eurorack and quarter-inch inputs, along with an attenuator for fine control, and it draws power directly from the connected pedal.
The result is a tighter connection between two worlds that often operate separately. Modular systems excel at control voltage and modulation, while pedals offer a wide range of tonal processing. Bringing those together without extra complexity makes it easier to build setups that feel cohesive instead of split across different workflows.
Both modules are available now, with the Stereo Chain Router priced at €190 and the CV2 Expression at €70. What stands out is not the feature count but the intent. These are tools built to remove friction, and in a modular environment, that is often where the most meaningful improvements come from.
Will Vance is a professional music producer who has been involved in the industry for the better part of a decade and has been the managing editor at Magnetic Magazine since mid-2022. In that time period, he has published thousands of articles on music production, industry think pieces and educational articles about the music industry. Over the last decade as a professional music producer, Will Vance has also ran multiple successful and highly respected record labels in the industry, including Where The Heart Is Records as well as having launched a new label with a focus on community through Magnetic Magazine. When not running these labels or producing his own music, Vance is likely writing for other top industry sites like Waves or the Hyperbits Masterclass or working on his upcoming book on mindfulness in music production. On the rare chance he's not thinking about music production, he's probably running a game of Dungeons and Dragons with his friends which he has been the dungeon master for for many years.
