Expressive E Osmose 61 – Next-Gen Expressive 61-Key Synthesizer

The Osmose 61 from Expressive E is a premium standalone synthesizer and MPE controller built for expressive performance and sound design. With a 61-key gesture-sensitive keybed, the powerful EaganMatrix engine, and full-fledged standalone functionality, it gives musicians a deeply responsive instrument that inspires creativity.

Key Features

• 61-key gesture-sensitive keybed: Full-size keys with three-dimensional control including press, glide, aftertouch and bend for expressive playing.
• EaganMatrix sound engine: Advanced digital modular architecture supporting FM, physical modelling, subtractive synthesis and more for rich sonic versatility.
• Standalone & MIDI controller modes: Use it as a full synthesizer without a computer or as an MPE/MIDI controller for external gear and software.
• Large preset library: Includes hundreds of factory sounds with up to 2 048 user preset slots and regular updates from a growing ecosystem.
• Performance-ready I/O: 2 x ¼″ TRS line outputs, headphone out, 2 continuous pedal inputs, DIN MIDI In/Out/Thru, USB-B connection and assignable controls.

Customer Benefits

Whether you are composing, performing live or controlling software instruments, the Osmose 61 offers a highly sensitive and intuitive interface that translates your gestures directly into sound. Its rich engine and generous key range give you freedom to build complex arrangements or expressive solos, while the standalone mode simplifies workflow. At Soundium, we know this instrument will become the keystone in your creative rig.

Quick Specs

• Polyphony: Up to 24 voices
• Dimensions: 114 × 41 × 20 cm
• Weight: 9.5 kg
• Keys: 61 full-size gesture-sensitive keys
• Sound Engine: EaganMatrix by Haken Audio
• Pedal Inputs: 2 continuous/assignable

What’s in the Box

• Expressive E Osmose 61 synthesizer
• Power supply (12 V DC, 1.5 A)
• User manual

Use Cases / Ideal For

Ideal for expressive keyboardists, sound designers, modern composers, live performers using MPE, and anyone wanting a high-end synthesizer with organic gesture control.

Compatibility

Compatible with macOS and Windows software via USB. Functions as MIDI and MPE controller for external gear and VSTs. Works standalone with built-in engine.

Pros & Cons

✅ Pros:

• Exceptional gesture control and keybed expressivity
• Powerful and flexible sound engine with deep design possibilities
• Standalone operation and MIDI controller functionality in one unit

⚠️ Cons:

• Large footprint and weight mean less portability
• Complex sound engine may require time to master

The Expressive E Osmose 61 redefines how a keyboard feels and responds—offering unmatched expressive potential on 61 keys and a feature-rich sound engine built to grow with your creativity. Available at Soundium.