ADDAC System ADDAC802R (–)
A reversed-panel version of a modular multitool - five VCAs, two mix paths, and a master VCA.
Overview
The ADDAC802R isn't flashy, but it solves a real problem with mix management in a crowded Eurorack case. It's the mirror image of the ADDAC802 VCA Quintet. Same circuit, same capabilities, but with a reversed panel layout that might fit your workflow (or your adjacent module) a little better. ADDAC System built it as part of their 800 Series, a lineup focused on analog sound utilities. The 802R is not a sound generator and not an effect. It's a workhorse for control and routing.
It gives you five independent VCAs. Each has its own knob for initial gain, a switch to route the signal to the Mix bus, the Solo bus, or off entirely (in the Off position the VCA does not gate the audio), and a dedicated output so you can grab any channel before it hits the mix. The Solo switch is more than a mute. It creates a parallel path, so you can isolate a channel or group without disrupting the main mix. That helps when you're patching live.
Then there's the master section: a sixth VCA at the end of the Mix path, with both Pre and Post outputs. You can send the full mix to another system before any final shaping, or apply dynamics after the fact. There's also an external input that lets you daisy-chain multiple 802Rs.
It's not a sound generator, so don't expect sonic character the way a filter or oscillator delivers it. What you get is flexibility: linear or logarithmic response per channel, LEDs to monitor activity, and a clean dual-path architecture. The standard panel is black, but ADDAC offers custom colors.
Specifications
| Manufacturer | ADDAC System |
| Dimensions | 12 HP |
| Depth | 55 mm |
| Current Draw | 150 mA +12V, 150 mA -12V, 0 mA 5V |
| Price | $392 |
| Features | 5 Channel Mixer, 1 Master Output, External input into the Mix channel for daisy chaining, 2 independent mixing paths (Solo and Mix), Mix Output includes a 6th VCA with Pre and Post outputs. Each of the 5 channels has: VCA with initial Knob, Monitor LED, Independent output, Linear or logarithmic control, Solo/Off/Mix switch. Outputs: 1 Pre Master VCA output, 1 Post Master VCA output, 1 Solo output. |
| Design & Technology | Panel is a "Reversed panel version" of the ADDAC802 VCA Quintet |
| Product Family | Part of the ADDAC800 series |
Key Features
Reversed Panel Layout
The "R" in ADDAC802R isn't a revision number. It's a spatial cue. This module flips the panel orientation of the original ADDAC802, likely to improve cable routing or visual symmetry in certain cases. In a dense Eurorack build, even a few millimeters of clearance or a better patching angle can make a real difference. No internal changes are noted. It's purely a physical reconfiguration, useful for builders who want consistency across multiple units or need to avoid obstruction from neighboring modules.
Five VCAs, Two Paths, One Master
Each of the five channels is self-contained: a VCA with manual level control, a toggle for Solo/Off/Mix, and its own output. The Solo path is independent, so you can route any combination of channels to the Solo output without affecting the main mix. The Mix path feeds into a sixth, master VCA. You can apply global dynamics, then take the output either before (Pre) or after (Post) that final gain stage. The Pre output is handy for feeding a recorder or external processor with a consistent mix, even if you're ducking or gating the final output in real time.
Daisy-Chaining and Expansion
The external input on the Mix channel isn't just for sidechaining. It's a way to chain multiple ADDAC802R modules together. Want ten VCAs under coordinated control? Patch the master output of one into the external input of another.
Visual Feedback and Control Options
Each channel has a monitor LED, so you can see signal flow at a glance. That helps when managing multiple CV sources or tracking down a silent output. The linear/logarithmic switch on each channel lets you tailor the response curve to the source: logarithmic for audio-level signals (more natural volume shaping), linear for CV or modulation duties where proportional response matters. Some larger mixers still don't offer that per-channel control.
Aesthetic Customization
ADDAC offers optional custom panel colors. The standard is black, so if your rack leans toward neon, pastel, or monochrome, you don't have to settle for utilitarian gray.
Collectibility & Value
The ADDAC802R isn't a vintage relic. It's a current-production module, so collectibility here is more about utility and condition than rarity. Listing prices hover around $392 - $399, based on recent sightings on ModularGrid and Reverb. No original MSRP or production dates are available, so tracking appreciation or depreciation isn't possible. There's no data on common failures, repair complexity, or long-term reliability, and the absence of failure reports in the fact sheet means we can't assume it's bulletproof. As with any modern Eurorack gear, condition, original packaging, and panel integrity (especially on custom colors) will likely influence resale value more than age or scarcity.
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