Haken Audio Slim21 Continuum (21s8x)

The Haken Audio Slim21 Continuum Fingerboard is a compact two-octave MPE+ expressive synthesiser controller featuring 21 half-step playing surface resolution, tri-dimensional touch sensitivity for pitch, pressure and timbre control, and the integrated EaganMatrix sound engine with advanced synthesis capabilities including physical modelling, FM and subtractive synthesis.

Design and Form Factor

Haken Audio refines its established Continuum Fingerboard concept into a significantly more portable format without compromising expressive control. The Slim21 measures 45 x 19 x 3 cm and weighs 1.6 kg, enabling seamless integration into studio environments or live performance setups where space and mobility matter. The playing surface retains the continuous tactile response associated with larger Continuum models, allowing precise gestural articulation across nearly two octaves.

Expressive MPE+ Control System

The Slim21 Continuum employs Haken Audio’s MPE+ technology, delivering per-note control across three axes. Each finger independently manipulates pitch through lateral movement, dynamics via pressure, and timbral variation through front-to-back motion. This multidimensional interaction transforms performance into a highly nuanced process, enabling fluid transitions, microtonal expression and complex modulation that traditional keyboards cannot replicate.

EaganMatrix Sound Engine Integration

The instrument integrates the proprietary EaganMatrix sound engine, a deeply programmable synthesis environment also used in high-end expressive instruments. This engine combines multiple synthesis methods, including subtractive synthesis for tonal shaping, frequency modulation for harmonic complexity, and physical modelling through modal filter banks for organic and acoustic-like textures. The architecture supports highly detailed sound design with dynamic responsiveness tied directly to performance gestures.

Editing and Customisation Workflow

Haken Audio includes the Haken Editor software, which allows full access to the EaganMatrix engine via macOS and Windows platforms. This editor facilitates deep parameter control and patch design, while custom overlays provide alternative performance mappings that expand usability and workflow efficiency. The system supports evolving sound design approaches tailored to experimental and professional applications.

Position Within the Continuum Range

The Slim21 Continuum sits alongside the larger Slim46 and Slim70 models, maintaining the same core technology while reducing the playing range and footprint. This positioning creates an accessible entry point into the Continuum ecosystem without sacrificing the defining expressive characteristics or synthesis power.

Why Choose Haken Audio Slim21 Continuum

• Enables highly expressive performance that closely mirrors acoustic instrument nuance
• Fits easily into compact studio setups or mobile live rigs
• Provides access to a powerful synthesis engine without requiring additional hardware
• Encourages experimental sound design through deep modulation and control
• Offers a more accessible entry into the Continuum range without losing core functionality

• Two-octave MPE+ continuous playing surface with 21 half-step resolution
• Three-dimensional touch control including pitch, pressure and timbre axes
• Integrated EaganMatrix sound engine
• Supports subtractive synthesis, FM synthesis and physical modelling
• Modal filter banks for acoustic-style sound generation
• Compact dimensions of 45 x 19 x 3 cm
• Lightweight design at 1.6 kg
• USB connectivity for editing and integration
• Compatible with Haken Editor software for macOS and Windows
• Supports custom overlays for performance mapping
• Portable design suitable for studio and live use
• Continuum Fingerboard surface for seamless pitch transitions

This item, like everything we supply, comes with the complete support of our expert team. Our excellent technicians have been specifying, building and supporting studios for over twenty years. If you have any problems with installation, setup or everyday use, they’re never more than a click away, and always happy to help.

You can contact them here.