ADDAC System ADDAC111B (2018–present)

A utility board for the ADDAC111 that gives you one trigger input and instant recall for each of eight files.

Overview

Put a Micro SD card full of field recordings, synth stabs or vinyl crackle in the ADDAC111 Ultra .WAV Player, and the ADDAC111B lets you trigger them. It is not a standalone module. It is a utility upgrade that turns passive playback into something you can sequence. The ADDAC111 gives you manual file navigation and CV-based file selection across up to 72 clips. The 111B adds direct triggering of the first eight. It is the difference between flipping through a notebook and having eight labeled buttons on your desk.

The ADDAC111B slots directly onto the back of the ADDAC111. No bus power needed, no ribbon cable. It is clean, compact and completely dependent on its host. Without the 111, the 111B is a dead circuit board. Together they make a performance-oriented sampler module. The trigger inputs for files A through H are front-panel mounted, and each one responds to a rising gate or trigger signal. If multiple triggers arrive at once, say from a malfunctioning sequencer or a dense clock matrix, the module follows a strict hierarchy: A wins, then B, all the way down to H.

The 111B removes the fiddling with skip buttons mid-set, and the CV mapping needed to land on a specific sample. It gives you deterministic control, like the individual drum triggers on a Roland TR-808. It does not play multiple samples at once, and it is not a polyphonic sampler. When you call a sample, it answers. The response is nearly instantaneous, which suits live sets where timing is everything.

Specifications

Key Features

Instant Sample Recall via Trigger

The 111B exists to let you trigger your most-used samples like drum hits. Each of the first eight files on your SD card (named A.WAV through H.WAV) gets its own dedicated trigger input. Send a gate, get a sample. No scanning, no CV scaling, no waiting. That turns the ADDAC111 from a looper with sample playback into something closer to an 8-pad sampler. To drop a vocal hit on beat four, assign it to file D and patch a clock divider.

Priority-Based Trigger Handling

Real-world patches are messy. Clocks misfire, sequencers glitch and gates pile up. The 111B handles this with priority. If triggers for files B, E and F all arrive simultaneously, the module defaults to B, the highest in the chain. It is not random, and it is not first-come-first-served. It is a hardwired hierarchy. That means you can patch multiple sources into the trigger inputs, say a random gate generator and a manual trigger button, and know exactly which one wins if they fire together. It is not flexible, but it is dependable.

Seamless Physical Integration

The 111B does not live on the front panel like a standard module. It mounts directly to the back of the ADDAC111, shares the same 16 HP width and adds only minimal depth. It adds no extra draw on the bus because it takes power through the backplane connection. Instead of putting another module in your rack, ADDAC expanded the 111 through integration. The result is fewer cables and no wasted space.

Historical Context

The ADDAC111B arrived in 2018 as an expansion to the ADDAC111 Ultra .WAV Player, which itself was an evolution of the earlier ADDAC101. At the time, modules like the Mutable Instruments Clouds and Hologram Electronics’ Binarc were redefining what sampling could mean in a modular context. Many of these modules prioritized texture and manipulation over immediacy. The ADDAC111 series took a different path: simplicity, reliability and performance-oriented design. The 111B pushed that further by making sample selection feel more like playing an instrument than programming a computer.

It wasn’t trying to compete with high-end granular processors or multi-sample players. Instead, it filled a niche: the musician who wanted to integrate short, impactful samples into their live set without the overhead of a full sampler or computer. Think of it as the modular equivalent of a SP-404’s one-shot pads, but stripped down to the essentials. In an era where Eurorack modules were becoming increasingly complex, the 111B was a quiet reminder that sometimes, the most powerful tools are the ones that get out of your way.

ADDAC System is based in Portugal and has always built functional, no-nonsense modules with a focus on real-world usability. The 111B has no screen, no MIDI and no USB. It solves one problem for performers: making sample playback immediate and tactile. That fits a broader trend in the late 2010s, when boutique manufacturers began focusing on workflow as much as sound design. The 111B makes no sound of its own, but it enables a kind of playing that the base 111 module alone could not deliver.

Collectibility & Value

The ADDAC111B is not a standalone product, and that shapes its collectibility. It does not show up on lists of “must-have” Eurorack modules because it cannot function without the ADDAC111. Owners of the 111 often see it as an essential upgrade, so used 111+111B pairs frequently sell together. On the secondhand market, the 111B alone typically trades between €80 and €120, depending on condition and whether it includes a custom panel. Bundled with the 111, the pair can fetch €350 - €450, especially if both modules have matching custom faceplates.

Failures are rare, and they are usually tied to the host module. The 111B has no firmware of its own. It relies entirely on the ADDAC111’s firmware (version E0 or later recommended). If the 111 isn’t updated, the 111B may not function correctly. SD card issues are the most common source of user frustration: cards not formatted in FAT16, files not named correctly (A.WAV through 9.WAV only), or hidden system files left by macOS or Windows that trigger the ERROR LED. These aren’t hardware flaws, but they can make the system appear broken when it’s just picky about its files.

Before buying, verify that the ADDAC111 is present and functional. Test the trigger inputs with a simple gate source. Any delay or missed triggers could indicate a connection issue. Also check for bent pins on the backplane connector, since the 111B plugs directly into the 111 and rough handling can damage the interface. Custom panels don’t affect performance, though they do increase resale value, especially in rarer colors like gold or silver gray.

Maintenance is minimal. There are no moving parts, no trim pots to adjust, no user-serviceable components. If it works, it’ll likely keep working. But because it’s an expansion module, it’s often overlooked in rack maintenance. Dust buildup on the backplane pins can cause intermittent connection issues, so a quick compressed air blow every few years is wise. Overall, the 111B is one of the most reliable utility expansions in Eurorack—not because it’s flashy, but because it does one thing, does it well, and stays out of the way.

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