Expressive E Osmose 61-key Polyphonic Synthesizer and MIDI Controller

Certain instruments don’t just make sound—they pull music out of you. The Expressive E Osmose 61-key polyphonic synthesizer and MIDI controller continues a decade of innovation from the Paris-based company that turns digital design into touch that inspires performance. Founded in 2013, Expressive E has redefined keyboard control through touch-based expression and modern craftsmanship. The Osmose extends that vision with an extra octave, giving players more range for two-handed voicings and evolving textures. Its 3D keybed responds to press, glide, bend, aftertouch and vibrato, translating movement into tone with precision. Powered by the EaganMatrix sound engine, it combines physical modeling, FM and subtractive synthesis for sounds that flow naturally between acoustic warmth and futuristic depth. In all, the Osmose embodies Expressive E’s mission—innovative design built with integrity for musicians who play from the heart.

3D MPE Keybed Delivers Real-Time Control

The 3D MPE keybed on the Expressive E Osmose tracks pressure, vertical and lateral motion per key, turning touch into precise musical data. Polyphonic aftertouch lets every finger control vibrato, pitch and dynamics independently, so chords breathe with natural nuance. The patented mechanism captures detailed phrasing and remains fully compatible with MIDI and MPE setups. This same keybed technology earned praise from Hans Zimmer, who used it to shape the soundscapes of Dune: Part Two, proving how expressive performance can shape cinematic tone.

EaganMatrix Engine Expands Creative Range

Developed with Haken Audio, the EaganMatrix engine blends physical modeling, FM, additive and subtractive synthesis for deep, dynamic sound creation. It includes 580 factory presets and 2,048 user slots, providing a wide tonal library. Built-in effects—reverb, delay, compressor/drive, EQ and two convolution engines—react to performance gestures in real time. Every movement from the keybed feeds the engine directly, offering responsive control without external modulation. The result is a detailed sound platform that rewards expressive playing and experimentation.

Crafted to Inspire Musicians

Each Expressive E Osmose 61 is assembled and tested in Poland for consistent quality and sustainability. Connectivity includes DIN MIDI In/Out/Thru, USB Type B, two 1/4" TRS line outputs, a 1/4" TRS headphone output and two assignable continuous pedal inputs. Regular firmware updates expand integration with DAWs and hardware, while Expressive E’s growing ecosystem adds new software such as Soliste (modeled strings) and Noisy 2 (dual-layer synth), plus collaborations with U-He, AAS, Dawesome, KiloHearts and Synapse Audio. Built for evolution, the Osmose grows alongside its players—an instrument designed to inspire for years to come.