Selling my Expressive E Osmose 49, a full synthesizer built on Haken Audio's EaganMatrix engine with a keybed that responds to pressure, lateral movement and vertical push on every individual key — true polyphonic expression, plus MPE control of external gear over USB or DIN MIDI.

Includes:
✅ Original packaging with all foam inserts
✅ Power supply with all four regional plug adapters — EU, UK, US, AU (unused)
✅ Original braided USB cable
✅ Quick Start Guide & legal notice

I've had this unit for 9 months, but it hasn't been used enough, so I'm letting it go. It has only been used in my non-smoking studio, has never been gigged or transported, and remains in excellent condition — all keys, the display, both sliders, all encoders, headphone out and both pedal inputs work exactly as they should.

Who is it for?

🎛 → Perfect for sound designers, live performers & anyone chasing expressive playing
🎵 → Works as an MPE controller for Bitwig (my favorite), Ableton, Logic, Cubase & any MPE-capable synth
🎹 → Model XPOSM49-1 · 49 keys · firmware 2.1.21 · Haken EaganMatrix engine 10.52 · bought new in 2025 from Midi Amsterdam.

📦 Shipping

From Amsterdam, double-boxed in the original packaging and fully insured.
Local pickup very welcome — you're encouraged to come and play it.