ADDAC System ADDAC200 (2010–)

Name: ADDAC System ADDAC200
Brand: ADDAC System

A tiny passive multiple for Eurorack. It splits signals and uses no power and almost no space.

Overview

Open any well-used Eurorack case and you'll find at least one passive multiple tucked in a corner. It has no envelopes, no oscillator and no flashy lights. It just routes the same CV or audio to several destinations. The ADDAC200 is that module: two sets of four 3.5mm jacks in 2HP of panel space. It doesn't amplify, it doesn't buffer, and it doesn't draw power. It passes voltage through. Plug a clock into one side and fan it out to four sequencers. Send a modulation source to multiple filters, and the ADDAC200 doesn't color the signal or load it down. Because it's passive, it can still degrade the signal when driving multiple high-impedance inputs. For most patches, especially in a moderately sized system, that's more than sufficient. Think of it as the junction box in an old house.

The ADDAC200 is part of the ADDAC200 Series, a family of utility modules built to solve small, persistent problems in modular synthesis. Other manufacturers might bundle multiples into multi-function modules. ADDAC System went the other way: one job, in the smallest footprint possible. It won't shape your sound, modulate your filters, or generate new textures. The build matches ADDAC's reputation: a sturdy aluminum panel, cleanly labeled jacks, and a minimalist look. It comes in black as standard. Custom colors are available directly from the manufacturer, at a premium and with a wait. Most users stick with stock.

Specifications

Manufacturer	ADDAC System
Production Years	2010–
Original Price	55.00 €
Format	Eurorack
Width	2 HP
Depth	1.5 cm
Power	Passive (no power draw)
Electrical Type	Passive multiple
Number of Multiples	2 x 4-fold
Jacks	8 x 3.5mm
Signal Type	Audio and CV compatible
Impedance	High impedance (passive)
Attenuation	None
Buffering	No
Color Options	Black (standard), custom colors available
Mounting Holes	2
Weight	Negligible
Country of Origin	Portugal

Key Features

Ultra-Compact Passive Design

At just 2HP wide, the ADDAC200 is among the most space-efficient multiples available. Every horizontal millimeter counts in skiffs and travel cases. It needs no power, so it adds nothing to the PSU load, which helps when you're running close to your supply's limits. Being passive, it adds no noise, no coloration and no latency. What goes in comes out unchanged, which suits clock signals, gate triggers, or any CV that needs to stay clean. But it's unbuffered, so chaining too many inputs from a single output can cause voltage drop, especially with lower-output modules. That's a limitation of physics, not a flaw. In large systems with complex fan-out patches, a buffered multiple like the ADDAC200B might be a better fit.

Dual 4-Fold Multiple

The module provides two independent 1-to-4 splits, each with its own row of jacks. Plug your source into the first jack and the signal appears on the next three. There are no switches and no routing matrix. The dual layout lets you handle two separate distribution tasks without stacking modules, such as a master clock and a pitch CV at the same time. The jacks are standard 3.5mm, compatible with all Eurorack cabling, and spaced to fit even bulky patch cables without strain. Labeling is minimal, with "MULT" marked above each row and no other graphics.

Build Quality and Customization

ADDAC System is based in Lisbon, Portugal, and has a reputation for clean, durable module construction. The anodized aluminum panel resists scratching, and the silkscreen stays legible after years of use. The jacks are mounted securely with no wobble or play, which matters on a module that sees constant plugging and unplugging. ADDAC also offers custom panel colors, something usually left to boutique or limited-run builders. For an additional fee and a 4-6 week lead time, you can order the ADDAC200 in red, green, blue, white, silver gray, yellowed silver, or bronze, with matching print colors. Most buyers stick with the standard black.

Historical Context

The ADDAC200 emerged during the early 2010s, a period of explosive growth in the Eurorack market. As more musicians and sound designers adopted modular systems, the need for compact, reliable utility modules became apparent. Larger manufacturers focused on sound-generating modules, while smaller European builders like ADDAC System took the practical, overlooked parts of patching. The ADDAC200 wasn't revolutionary and introduced no new synthesis or modulation methods. It solved one problem: distributing signals in a space-constrained case. At the time, many builders were still using DIY solutions or repurposing modules from other formats. ADDAC released a dedicated, mass-produced 2HP multiple to fill that gap. It arrived alongside similar utility-focused modules from brands like Intellijel and Doepfer, with a minimalist look that appealed to users who wanted clean, functional design. Its passive nature also fit a growing preference for low-power modules, especially as skiff-friendly systems gained popularity.

Collectibility & Value

The ADDAC200 is not a collectible in the traditional sense. It doesn't appreciate in value, isn't produced in limited runs, and has no vintage analog mystique. It remains in active production and is widely available through ADDAC's direct sales and authorized dealers. New units sell for around €55, with no significant markup on the secondary market. Used units in working condition typically go for €30 - €40, depending on region and seller. It has no electronics, just jacks and traces, so failure points are minimal. The most common issues are bent jacks or cracked solder joints from physical stress, but these are rare and easily repairable. There's no need to "recap" it and no aging components to worry about. Counterfeit or clone modules do exist, especially on marketplaces like eBay. A genuine ADDAC200 will have crisp silkscreening, consistent panel anodization, and the correct jack spacing.