ADDAC802 Quintet Mixing Console (Update Model)

Name: ADDAC System Mixer
Brand: ADDAC System

A Eurorack mixer with five VCAs, dual mixing paths, daisy chaining and a master VCA.

Overview

The ADDAC802 Quintet Mixing Console is a fully active, voltage-controlled mixer for five independent audio or CV paths, each with its own routing options. ADDAC System built it as an update to the earlier ADDAC802 Audio Mixer. It's a 12 HP module with five VCAs, dual mixing paths (Solo and Mix), and a sixth master VCA on the Mix output for real-time control over the final blend. The catch is the power draw.

The routing is the clever part. Each of the five channels has a Solo/Off/Mix switch, so you can send any signal to the dedicated Solo bus, the main Mix bus, or nowhere at all. The Solo bus is designed for pre-listening. Route it to a headphone amp and you can audition channels silently while the rest of your patch keeps running. Each VCA also has its own independent output, so you can pull individual channels post-VCA for further processing, feedback loops, or parallel effects. That level of flexibility is rare, even in larger-format systems.

Then there's the daisy chaining. The Mix channel has an external input, so you can link multiple ADDAC802s together and scale your mixing power linearly. Need ten channels? Stack two. Need fifteen? Three. There's no central hub and no proprietary interface, just analog signal flow that grows with your system.

Now the power. The module pulls +190mA on the positive rail and 150mA on the negative. That's a lot. If your power supply is already stretched thin, you may need to upgrade your bus board or rethink your layout.

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. It has an initial knob for manual level setting, a Monitor LED to catch clipping, and a choice of linear or logarithmic response. Logarithmic feels more natural for audio, while linear gives you more precise control over CV or percussive transients. The independent output per channel means 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 does the main routing work. Flip it to Solo, and the signal goes to the dedicated Solo bus, handy 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 removes it from both buses completely, so it's more than a mute. The Solo bus is normalized for pre-listening and is intended to feed a headphone amp, which helps in live sets or complex studio patches where you don't want audio spilling to the main outs.

Dual Mixing Paths with Master VCA

The ADDAC802 gives you two mixes. The Solo path is your private monitor bus. The Mix path is the final output, and 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, bring the compressed signal back in, and control its final level with CV. You can also modulate the master level with an LFO for rhythmic swells.

Expandable via Daisy Chaining

Need more than five channels? The Mix channel has 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.