ADDAC System ADDAC200B (2020s)
A small block of metal that solves one of Eurorack's more maddening problems and doesn't take up an inch of extra space.
Overview
No blinking lights, no knobs, no waveforms. The ADDAC200B just sits there, 2HP wide and barely an inch deep, doing one job: distributing a single CV or audio signal to three outputs without loading down the source. In a modular system you often branch a clock, LFO, or envelope to several destinations, and this is a reliable way to do it. Passive multiples are cheaper and simpler, but anyone who has tried to fan out a delicate gate signal across a dozen modules knows the risk: voltage droop, timing glitches, or outright failure when the source can't handle the load. The ADDAC200B gets around that with buffered outputs, each capable of driving long cable runs or multiple inputs.
It isn't only for CV. Run an audio signal through it and it behaves cleanly, with no added noise, no coloration, no phase weirdness. That makes it useful for splitting an oscillator before sending it to multiple filters, or duplicating a modulation source for parallel processing chains. The build is typical ADDAC: clean black panel (with optional custom colors), recessed jacks to avoid cable strain, and a Doepfer-style power connector that works with standard Eurorack bus boards. It draws a trivial 10mA, so even a power-starved skiff can host a few of these.
Specifications
| Manufacturer | ADDAC System |
| Production Years | 2020s |
| Original Price | 70.00 € |
| Format | Eurorack |
| Width | 2 HP |
| Depth | 1.5 cm |
| Max Current | 10mA |
| Power Supply Compatibility | ±12V and ±15V |
| Bus Board Connector | 8×2 IDC (Doepfer style) |
| Function | Buffered Multiple |
| Inputs | 2 x 1/4" (6.35mm) TS jack |
| Outputs | 6 x 1/4" (6.35mm) TS jack (3 per buffer) |
| Signal Type | CV and audio |
| Buffer Type | Active, non-inverting |
| Impedance | High input, low output (exact values not specified) |
| Attenuation | None (unity gain) |
| Custom Panel Options | Red, Green, Blue, White, Silver Gray, Yellowed Silver, Dark Bronze, Light Bronze |
| Print Color Options | Black, White, Red, Yellow, Blue, Green |
Key Features
Two Independent Buffered Multiples
The ADDAC200B packs two completely separate buffered multiples, each with one input and three outputs. You can split a clock and an LFO at the same time without cross-talk or loading issues. Unlike daisy-chained passive multiples, each output is actively driven, so voltage levels stay consistent across all destinations. There's no bleed and no timing skew. It's especially useful in complex rhythmic patches where gate integrity is critical, or in systems with long cable runs between modules.
Minimal Footprint, Maximum Utility
At just 2HP, the ADDAC200B is about as space-efficient as a Eurorack module gets. It fits into the tightest skiffs and leaves room for more sonically exciting modules. It's still built to last: sturdy aluminum panel, recessed jacks to protect cables, and a clean layout that avoids hotspots or strain points. The depth is 1.5cm, shallow enough to fit behind almost any case, including ultra-slim travel rigs.
Custom Panel Options for the Aesthetic Purists
ADDAC offers custom-colored front panels for the ADDAC200B, a rare touch for a utilitarian module. Want a red panel with white print in a sea of black? Done. Silver with blue labeling? Also doable. Lighter print on dark panels (or vice versa) improves readability in dimly lit studios. The catch is that custom panels aren't stock items. They're made to order, adding 4-6 weeks to delivery and a premium to the price.
Historical Context
The ADDAC200B emerged in the early 2020s, when Eurorack was a mature ecosystem with deep specialization. As systems grew larger and more complex, the limits of passive multiples became glaring, especially in hybrid digital-analog setups where timing precision mattered. Buffered multiples weren't new, but they were often bulky, expensive, or buried inside larger utility modules. ADDAC made a dedicated, ultra-compact buffered multiple. It arrived alongside similar minimalist utilities from brands like Intellijel and Mutable, but stood out for its density: two buffers in 2HP, priced accessibly.
ADDAC System, based in Lisbon, had already built a reputation for hybrid designs that blended analog warmth with digital control. The ADDAC200B wasn't one of those hybrids, but it shared the same philosophy: solve a problem cleanly, without overcomplicating. It isn't a sound generator or an effects processor. It's infrastructure.
Collectibility & Value
The ADDAC200B isn't a collector's item in the traditional sense. There are no limited runs and no circuit revisions that dramatically alter performance. It's a modern utility module, still in production, and readily available from ADDAC and dealers. At 70€, it's not cheap for a module with no knobs or blinking lights, but it's priced fairly for what it does. Secondhand units typically sell for 50-60€, depending on condition and whether they include a custom panel.
Failures are rare. There are no moving parts, no delicate components, and the circuit is simple by design. The most common issue reported is power connector strain, especially if the bus cable is tugged repeatedly, but the recessed jacks help prevent that. No known firmware or calibration quirks. Because it's passive in function (aside from the buffer electronics), there's little to go wrong. For buyers, the main concern is verifying the module powers up and passes signal cleanly through all outputs. A quick test with a multimeter or oscilloscope will confirm buffer operation. No need to recap, no alignment.
If you’re building a skiff or trying to maximize utility in minimal space, the ADDAC200B is worth every euro. It’s not the only buffered multiple on the market—Intellijel’s Buffered Multiple and Mutable’s Buffered Mult are alternatives—but few match its combination of size, price, and build quality. And unlike some boutique modules that become unobtainable overnight, this one isn’t going to vanish. It’s too useful to let that happen.
Similar items on eBay
No exact ADDAC System ADDAC200B listings are live right now — these searches show current ADDAC System and similar vintage synth gear on eBay:
As an eBay Partner, we earn from qualifying purchases. This helps support our independent vintage technology research.