Redefining musical expressivity, the Osmose sets the new benchmark. Powered by the EaganMatrix engine, it offers the full expressive experience, as a standalone synthesizer or the most advanced MPE controller. Press, bend, shake, strum, and more to play keyboards and electronic sounds with a natural, unique organic feel.
play with
new gestures
Behind the expressivity of Osmose lie a few natural gestures you already master. Discover how they pair with Osmose and enhance your musicianship from the very first touch.

hear osmose
in action
One osmose fits all musicians. Watch these demo videos to hear osmose in various music genres. MPE and expressivity will enhance any live or production setting, pushing the limits of your own creativity!
now in two sizes.
same level of expression
The new standard for musical expressivity. Powered by the EaganMatrix engine, Osmose delivers the full expressive experience, as a standalone synthesizer or the most advanced MPE controller. Press, bend, shake, strum, and more to play keyboards and electronic sounds in a uniquely organic way.
simple is better, focus on your sound
Osmose’s operating system is built around 4 simple menus, giving you all the options you need to create music.
preset
Browse easily through 500+ presets, filter your sounds in categories, create custom playlists and save user presets. Easy and efficient!
synth
Reshape any preset to your tastes with 6 macros, adjustable FXs, mappable mod slider and pedals... the list goes on.
sensitivity
Osmose adapts to your playing, not the opposite! Customize how each preset reacts to your gestures: bend, aftertouch and press.
playing
Go crazy with the MPE arpeggiator or make any melody sing with Pressure Glide, from the slightest pull-off to the most extreme slide!

thinking ergonomic
We tailored Osmose’s browser to make it a hassle-free experience. It offers various filters and sub-filters based on both sound types and colors so you can find the sounds in your head quickly.
view tutorial
craftmanship with a unique design signature
Designed in France to stand the test of touring time with style, Osmose is made of quality components and boasts a high repairability index.
3-axis motions
for every key
A unique mechanism captures three-dimensional gestures on every key. Extended pressure shapes timbre and volume from the first touch. High-resolution aftertouch reveals new layers as you press deeper, while lateral motion enables per-note bends and vibrato, just like on an acoustic instrument.
Eco-conscious
by design
66% of Osmose is made from recycled materials, assembled without glue, and is fully serviceable. With built-in diagnostics and durability testing, it’s built to last — and to be repaired.
new free 2.1
update
Revamped sound engine, 80 new MPE presets, 2 added FXs
Osmose's updated engine is tailor-made for rich analog sounds, available as new 80 MPE presets and 2 built-in FXs (tanh saturation + long reverb).
introducing
firmware 2.0
The constant evolution of a revolutionary product.
New Osmose 2.0 free update - more preset slots, browsing options and mpe/midi control playing modes!
"Osmose is a synth that’s truly unique, surprisingly versatile, can be hugely inspiring, and sounds very, very good indeed."
"Osmose is an actual musical instrument. It reacts to the expression only a human is capable of and understands a language your typical MIDI keyboard cannot."
"the Osmose offers unprecedented levels of control and expression, catering to musicians who seek a more intimate and responsive connection with their instrument."
"Osmose by Expressive E is a game changer for electronic performers and composers seeking a deeper level of expression."
"Osmose is a unique, innovative synthesizer, the instrument of choice for musicians - and not just keyboardists."
expressive music tips
Harness the power of mpe and expressiveness, no matter your musical background or preferred genre.
expressive music tips
Harness the power of mpe and expressiveness, no matter your musical background or preferred genre.
protect your osmose
Custom-made for Osmose, the EE Soft Case is now available in two sizes: one for Osmose 49 and one for Osmose 61 (coming soon). Both versions offer the same sleek, rugged, and ergonomic design to protect your instrument wherever you go.
technical specs
keybed
49/61 full-size keys with three-dimensional control
configurations
standalone synthesizer, MPE controller, and classic MIDI controller
gestural control (internal & external midi mode)
Tap, Press, Pitch Bend, Vibrato, Aftertouch, Pressure Glide, Note Off, Expressive arpeggiator
built-in effects
1 global reverb/delay/echo effect, 1 compressor/drive, 1 shelve EQ. More effects programmable via the EaganMatrix
sound engine
EaganMatrix, a digital modular engine by Haken Audio
polyphony
up to 24 voices
interface
color LCD screen, pitch and modulation sliders
preset management
580 factory presets, up to 2048 preset slots
pedal inputs
2 continuous pedal inputs, assignable to sustain or synth parameters
midi
DIN MIDI In, MIDI Out/Thru, USB Type B
audio output
two ¼" TRS pseudo balanced line outputs, ¼" TRS headphone output
dimensions
Model 49 keys: 90 (H) x 310 (L) x 895 (l) mm / 3.5” (H) x 12.2” (L) x 35.2” (l)
Model 61 keys: 90 (H) x 310 (L) x 1060 (l) mm / 3.5” (H) x 12.2” (L) x 41.7” (l)
weight
Model 49 keys: 8.3 kg / 18.4 lbs
Model 61 keys: 9.5 kg / 20.9 lbs
power
external PSU with lockable connector, 12V, 1.5A, center positive
software
Software updater for new firmware and library versions
A Mac/PC editor to create and edit sounds
free shipping over $200/200€