ADDAC 200B Buffered Multiples (2000s–2020s?)
Two HP of signal cloning. Small enough to hide, and you notice when it's gone.
Overview
The ADDAC 200B Buffered Multiples isn't flashy. It doesn't make noise, shape waves, or sequence anything. But open up any densely packed Eurorack case and you'll find its type everywhere, doing the grunt work quietly. Its full name is the ADDAC 200B Buffered Multiples Eurorack Utility Module (ADDAC200B), made by ADDAC System. It has one job: split a single signal across multiple destinations without loading down the source. It does that in just 2HP, which is practically cheating in today's space-starved racks.
A buffered multiple, as opposed to a passive one, has internal circuitry that actively isolates the input from the outputs. So when you patch a delicate LFO into three different filters, you're not dragging its voltage down or causing timing drift. The 200B keeps things stable. Owners report it handles both audio and CV signals without issue. Some buffers color the signal or fail under fast control voltages, and this one's design sidesteps those pitfalls. Clock, gate or full audio signal, it passes through cleanly.
ADDAC markets it as "our smallest buffered multiples," and that's no exaggeration. At just 15mm deep, it fits even the shallowest cases. The module has two independent sets of four connectors. In each set you feed a signal into the first jack, and it gets distributed to the next three in that group. That's six total outputs across two channels, all in a sliver of panel space. Nothing magical here, just cloning, but every millimeter counts in a modular rack.
Specifications
| Manufacturer | ADDAC System |
| Product type | Eurorack utility module, buffered multiples |
| Width | 2HP |
| Depth | 15mm |
| Power | 10mA +12V |
| Function | allow you to connect one source to its input and have it distributed through all of the 3 adjacent outputs. |
| Number of connectors | two sets of four connectors. |
| Signal compatibility | Yes, it can do both audio and CV! |
| Bus Board Cable Type | Doepfer 8x2 idc |
| CV IO | N/A |
| Functions | Multiple |
| Format | Eurorack |
Key Features
Buffered for Stability
Being a buffered multiple means the ADDAC200B doesn't just split signals - it protects them. Passive multiples can cause voltage drops when you fan out a single source, especially with high-impedance or fast-changing CVs. The 200B's active buffering prevents that and keeps the signal intact. This matters most when distributing clocks or modulation sources across multiple modules. The fact sheet doesn't specify the buffer topology or components, but the real-world result is clean, load-free distribution.
Two Independent Channels
The module packs two separate buffered multiples, each with four jacks. You feed one signal into the first jack of a set, and it appears identically on the next three. That gives you two isolated distribution zones, so you can split a master clock in one group and a modulation source in the other. With only two HP used, it adds routing flexibility without cluttering your rack.
Compact and Case-Friendly
At 2HP wide and just 15mm deep, the 200B is built for tight spaces. It's part of the ADDAC200 Series, and as the brand notes, it's their smallest buffered multiple offering. That suits skiff builds, travel cases, or systems where every millimeter is budgeted. It draws only 10mA from the +12V rail, so it puts minimal demand on your power supply.
Universal Signal Handling
The module is explicitly confirmed to handle both audio and CV signals, so it isn't limited to control voltages. You can split an oscillator's output to feed multiple filters, send a single envelope to several VCAs, or distribute a complex audio stream to parallel processing chains. The fact sheet gives no frequency response data or impedance specs, which is a gap, but user applications confirm it performs reliably across typical Eurorack signal ranges.
Collectibility & Value
The ADDAC 200B isn't a collector's piece. It's a working module, valued for utility over rarity. It holds steady in the market, though. A new unit is listed at £71.00, while another retailer shows a price of $80.00, currently sold out. The difference likely reflects regional pricing and availability rather than a conflict. Used units do appear, with at least one listing confirmed on Reverb, though the fact sheet didn't capture specific pricing for used examples.
There's no data on original launch pricing, production years, or common failure points. No reports of circuit failures or maintenance needs have surfaced, which may point to a simple design. Buyers should still inspect units carefully, since buffer circuits can degrade over time if poorly implemented, though no evidence suggests that's an issue here.
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