Befaco, the Barcelona maker known for its DIY kits, is changing scale with ARK: not one more module, but a genuine music-production computer built to become the hub of a Eurorack system. Shown at Superbooth 2026 and now reaching the market, ARK brings sequencing, sampling, sound generation and voltage handling into a single workspace. The ambition is plain: stop treating those functions as separate.
A 16-track canvas
At ARK’s core is a sixteen-track composition surface onto which you place whatever you like: CV generators, drum voices, synth voices and several kinds of sampler, including drum players, slicers and a granular sampler. The composition system is built around scales, chords and harmonic relationships: you build progressions, generate melodies, and the whole thing stays tied to the track’s harmonic context. You can introduce chance, variation and algorithms without losing the underlying musical structure—which is exactly what separates a real musical sequencer from a plain random-pattern generator.
One module, two components
ARK is a unified system sold in two distinct parts: the ARK-Core and the ARK-Controller. The Core is the engine, managing and generating all signals; the Controller is where you compose. The two can be placed separately, in different rows or in any layout you like. Befaco pushes the logic further by offering an external enclosure for the Controller that you can 3D-print yourself, connected to the Core by a single USB cable carrying both power and data. It’s an unusual approach that separates the playing surface from the processing electronics.
The hub of the system
ARK is designed to work as the centre of the whole rack. Every channel can send audio and CV to your modular, your analog synths or your MIDI instruments; conversely, you route MIDI, CV and control signals into ARK to fold them into the composition. An incoming signal can thus be turned into a melody or a sequence, reshaped by your scales, chords and progressions. The CV generators follow the internal harmony, which means your external voices automatically lock to the scales and chords defined inside ARK.
Integration runs deep: all devices, all effects and the mixer are tightly bound to the sequencer, allowing real-time gesture recording and per-step parameter locks for most settings. You can assign any parameter to the internal modulation system in two moves, or edit a setting across several steps at once by holding them and turning the matching encoder. On the surface, the ARK-Controller relies on hot-swappable mechanical keyboard switches: a crisp feel and easy long-term servicing. Slides, rolls, divisions, Smart Group selection and triplets that can be forced on the fly round out the playing vocabulary.
Positioning
ARK is announced at around 666 € including VAT. This is not a filler module: it’s an investment meant to replace a stack of sequencing, sampling and modulation modules with one coherent brain. For a modular system starting to look like a maze of sequence cables, the promise of a single, harmony-aware conductor is appealing.
In the same vein, read our pieces on Erica Synths Konstrukt-8 and on the Atomosynth Mochika X7. ARK’s official page is on the manufacturer’s site.
Frequently asked questions
Do I buy the Core and Controller separately?
No: ARK is a unified system, sold with both components. The ARK-Core and ARK-Controller work together, the former as the signal engine, the latter as the composition surface. They can simply be placed in different spots of the rack depending on your space constraints.
Will my external voices follow ARK’s harmony?
Yes. ARK’s CV generators follow the internal harmony, so a synth or external module driven over CV automatically locks to the scales and chords set in the composition. ARK also sends audio and CV to the rest of the system from each of its channels.
Can the playing surface be physically separated?
Yes. The ARK-Controller can live in an external enclosure—which Befaco lets you 3D-print yourself—connected to the ARK-Core by a single USB cable carrying power and data. That brings the playing surface closer to you while keeping the Core in the rack.
Does the sequencer handle parameter locks?
Yes. Devices, effects and the mixer are integrated into the sequencer, with real-time gesture recording and per-step parameter locks for most settings. You can also quickly assign a parameter to internal modulation or edit it across several steps at once.
My take
ARK pushes back on the usual modular reflex of stacking specialist modules until you no longer know which cable goes where. Gathering sequencing, samplers, voices and modulation under one harmonic logic is ambitious, and the detachable-Controller bet shows Befaco thought about the gesture as much as the electronics. The flip side of any centralising system remains: you have to hand the keys to the rack to a single brain. For anyone who likes to compose within structure rather than pure chance, this is exactly the kind of tool that can redefine a whole system.
