ADDAC802 Quintet Mixing Console (Update Model)
A Eurorack powerhouse where five VCAs don’t just mix—they perform, with dual paths, daisy chaining, and a master VCA that earns its keep.
Overview
You know that moment when you're patching and suddenly realize you're fighting your mixer instead of using it? The ADDAC802 Quintet Mixing Console doesn’t just solve that—it redefines what a modular mixer can do. This isn’t just another passive summing bus with a few knobs slapped on; it’s a fully active, voltage-controlled command center for five independent audio or CV paths, each with its own personality and routing options. Built by ADDAC System as an update to the earlier ADDAC802 Audio Mixer, this 12 HP module brings serious architecture to the Eurorack world: five VCAs, dual mixing paths (Solo and Mix), and a sixth master VCA on the Mix output that gives you real-time control over your final blend. It’s the kind of module that makes you wonder how you ever lived without it—until you see the power draw.
The genius is in the routing. Each of the five channels features a Solo/Off/Mix switch, letting you send any signal to either the dedicated Solo bus, the main Mix bus, or cut it out entirely. That Solo bus? It’s not just for troubleshooting—it’s designed for pre-listening, meaning you can route it straight to a headphone amp and audition channels silently while the rest of your patch keeps running. That’s thoughtful design, not just feature stacking. And because each VCA has its own independent output, you’re not locked into the mix—you can pull individual channels post-VCA for further processing, feedback loops, or parallel effects. This level of flexibility is rare, even in larger-format systems.
And then there’s the daisy chaining. The Mix channel includes an external input, so you can link multiple ADDAC802s together and scale your mixing power linearly. Need ten channels? Stack two. Need fifteen? Three. It’s modular in the truest sense—no central hub, no proprietary interface, just clean, analog signal flow that grows with your system.
But let’s be real: this module isn’t for the power-shy. With a +190mA draw on the positive rail and 150mA on the negative, it’s a hungry piece of gear. If your power supply is already stretched thin, adding this might mean upgrading your bus board or rethinking your layout. Still, for those who need precise, voltage-controllable mixing with professional-grade routing, that draw feels justified. It’s not just a mixer—it’s a performance console.
Specifications
| Manufacturer | ADDAC System |
| Product Type | Eurorack Module, Mixer/VCA |
| Dimensions | 12 HP, 55 mm deep |
| Current Draw | +190mA/-150mA |
| Power Supply Compatibility | Compatible with +-12v and +-15v power supplies |
| Bus Board Cable | 8 × 2 IDC (Doepfer style) connector |
| Module Height | 3U |
| Weight | 0.175 kg |
| Number of Channels | 5 channel mixer |
| CV Inputs | ± 10v |
| Outputs | 1 Pre Master VCA output, 1 Post Master VCA output, 1 Solo output |
Key Features
Five VCAs with Full Individual Control
Each of the five channels is built around a dedicated VCA, complete with an initial knob for manual level setting, a Monitor LED to catch clipping before it hits your ears, and the ability to select linear or logarithmic response. That choice matters—logarithmic feels more natural for audio, while linear gives you precise control over CV or percussive transients. The inclusion of an independent output per channel means you’re not just mixing—you’re building a signal matrix. You can send one channel to the mix, route another to an external processor via its direct out, and modulate a third with an envelope, all while keeping them isolated until the final stage.
Solo/Off/Mix Switching Per Channel
The Solo/Off/Mix switch on each channel is where this module earns its name. Flip it to Solo, and the signal routes to the dedicated Solo bus—perfect for cueing up a sequence or checking a patch without disrupting the main output. Set it to Mix, and it joins the main sum. Off? It’s completely removed from both buses. This isn’t just mute—it’s surgical routing. And because the Solo bus is normalized for pre-listening (intended to feed a headphone amp), it’s a godsend for live sets or complex studio patches where you need to stay in the flow without spilling audio to the main outs.
Dual Mixing Paths with Master VCA
The ADDAC802 doesn’t give you one mix—it gives you two. The Solo path is your private monitor bus. The Mix path is your final output, but with a twist: it includes a sixth VCA that lets you voltage-control the entire summed signal. That VCA has both Pre and Post outputs, so you can send a version of the mix to a compressor pre-VCA, then bring the compressed signal back in and control its final level with CV. Or modulate the master level with an LFO for rhythmic swells. This isn’t just summing—it’s dynamic, expressive mixing that responds to your patch in real time.
Expandable via Daisy Chaining
Need more than five channels? The Mix channel includes an external input, so you can feed the output of another ADDAC802 (or compatible mixer) directly into it. This lets you cascade multiple units with simple patching. It’s a simple but powerful design decision that turns a single module into a scalable mixing system. In an ecosystem where space and patch complexity are constant battles, this kind of expandability is rare and deeply appreciated.
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