Manufacturer's description
Building on the worldwide success of the 49-key Osmose, the new 61-key version adds an extra octave, giving musicians more room to explore, compose, and perform. Musicians can now choose between the original 49-key or 61-key model, depending on their needs and playing style.
Beyond the instrument itself, Osmose thrives within a living, evolving ecosystem of software, presets, and community-driven updates, ensuring it grows and improves over time. And with production now fully internalized in a new Polish factory, Expressive E guarantees the highest European quality standards for every instrument.
Osmose 61: A Bigger Range, Same Innovation
With 61 keys, Osmose 61 offers greater harmonic and melodic freedom, perfect for two-handed playing, complex arrangements, and live performance. It retains everything that made the 49-key model revolutionary: the expressive 3D keybed, MPE integration, high-end interface, and premium build quality — giving musicians the choice to stay with 49 keys or step up to 61.
EaganMatrix Always at the Core of Osmose Sound
Powered by the legendary EaganMatrix engine, developed by Haken Audio, Osmose delivers rich acoustic textures and complex synth sounds that react intuitively to every gesture. Its versatile engine supports physical modeling, FM, subtractive synthesis, and more, complemented by onboard reverb, delay, compressor, and EQ.
With 580 factory presets and up to 2048 preset slots, Osmose offers a complete, performance-ready palette while staying true to the expressive soul of the instrument.
A Living Ecosystem
Osmose is more than an instrument; it is at the center of a living ecosystem that grows and evolves with its community of musicians.
Expressive E has expanded the software ecosystem around Osmose, offering a rich library of sounds through partnerships with renowned companies such as U-He, KiloHearts, Dawesome, AAS, and Synapse Audio. These collaborations are featured in the Expressive Suites, available on the Expressive E website.
Proprietary software explicitly designed for Osmose — such as the new Soliste (physically modeled solo strings) and Noisy 2 (a dual-layer, noise-driven synth) — has also been released to further expand musical possibilities.
This ecosystem is designed to grow. Expressive E is committed to making Osmose evolve over time, with regular firmware updates bringing smoother workflows, deeper DAW integration, and an ever more fluid user experience.
Coming soon, a series of mini-synths with intuitive editors for the EaganMatrix will make sound design more accessible than ever, transforming what was once a complex interface into an expressive, user-friendly platform for creativity.
Made in Europe: A New Factory in Poland
Until now, Osmose production has been outsourced to China. To meet global demand while guaranteeing uncompromising quality, Expressive E is taking a decisive step forward: a new assembly facility in Poland, fully dedicated to Osmose and future instruments.
For the first time, the company will no longer rely on subcontractors. Every stage, from design to assembly, will now be handled in-house. This shift gives Expressive E full control over the lifecycle of its products, ensuring reliability, sustainability, and the highest European quality standards.
It’s an ambitious challenge for a young company, but one driven by passion, conviction, and a clear vision: to craft instruments that embody both innovation and integrity, from the very first design to the final note — and to gain even greater freedom to innovate.
Technical Highlights
- Keys: 61 full-size, fully expressive
- Polyphony: Up to 24 voices
- Gestural Control: Tap, Press, Pitch Bend, Vibrato, Aftertouch, Pressure Glide, Note Off, Expressive arpeggiator
- Sound Engine: EaganMatrix by Haken Audio
- Built-in Effects: Reverb, Delay, Compressor/Drive/2 convolution engines, pre & post reverb/delay, EQ
- Preset Management: 580 factory presets, up to 2048 preset slots
- Interface: Color LCD, 6 encoders, pitch/mod sliders, octave/preset buttons
- Pedal Inputs: 2 continuous (assignable)
- MIDI: DIN In/Out/Thru, USB Type B
- Audio Output: 2x 1/4” TRS line, 1x 1/4” TRS headphone
- Dimensions: 114 × 41 × 20 cm
- Weight: 9.5 kg
- Power Supply: External 12V DC, 1.5A
How much is my shipping?
Shipping is automatically calculated before you submit your payment information. Simply add items to your cart and proceed to the checkout page, where you'll be offered shipping options and their prices. In the UK, 'next working day' shipping is free if the order value is over £150, and £5 otherwise. We can also ship on a 'next working day before 12pm' service, which costs £6 for orders over £150 and £7.50 for orders under £150.
Shipping to mainland EU typically costs between £7 and £20, depending on the shipping method and the size and weight of the order.
Do you ship to my country?
Almost certainly - the site will give you an estimate of shipping costs if you add an item to the cart and then enter your country and postcode. If you have specific requirements (such as if you prefer UPS over FedEx, for example) then let us know in advance and we'll try to work something out for you.
Shipping methods
We use a combination of DPD, Royal Mail and Parcelforce for the UK, and for international orders it's either DHL, FedEx, UPS, Royal Mail or Parcelforce depending on where you are in the world. If you have a particular preference then try to let us know BEFORE you order so we can look into it for you. Please note that there may occasionally be additional shipping charges if you live in a remote area, depending on what surcharges are applied by the shipper. We'll get in touch to discuss this with you in such cases.
Dispatch times
For UK orders, we aim to dispatch the same working day if we get the order before 16:00. If you have a really urgent situation then of course drop us an email before ordering and we'll always do our absolute best to accommodate you.
For international orders, we normally dispatch the same day if we get the order before 13:00 but again, occasionally it might be the next day before we can send it out, and sometimes the couriers may come to collect a little earlier than scheduled which would also push an order into the next day.
Saturday/Sunday shipping
If you're in the UK and you order before 16:00 on a Friday then we can send something for a Saturday or Sunday delivery with DPD. This is FREE for order values over £350, £5 for order values between £75 and £250, and £7 for order values under £75. (NB: this applies to UK mainland addresses only). Please note that any orders placed after 16:00 on a Friday will ship on the Monday.
International shipping times
Since April 2020, the couriers we use have suspended guarantees for shipping times, so even though we're paying them for priority services - 24-48 hours for most of the world - in practice it's often an extra day on top and sometimes it can be longer. There is absolutely nothing we can do about this, unfortunately. If you are outside the UK and it's a life-or-death situation where you absolutely MUST have that passive mult for the next day then... it may be better to find a local supplier.
Pre-orders
If a product is listed as a pre-order, it means we've ordered it from the supplier but it's not physically in stock yet. The product listing will include an estimated shipping date based on the best information we have from the supplier, but do bear in mind this is subject to change and is not a guaranteed date.
If you place an order containing a mixture of in-stock and pre-order items, we'll normally hold off on shipping anything until the pre-order item(s) have arrived, rather than splitting it into multiple shipments. If you need the in-stock items sooner, we'd recommend placing separate orders. As always, please get in touch if you have questions.
Product Overview
Manufacturer's description
Building on the worldwide success of the 49-key Osmose, the new 61-key version adds an extra octave, giving musicians more room to explore, compose, and perform. Musicians can now choose between the original 49-key or 61-key model, depending on their needs and playing style.
Beyond the instrument itself, Osmose thrives within a living, evolving ecosystem of software, presets, and community-driven updates, ensuring it grows and improves over time. And with production now fully internalized in a new Polish factory, Expressive E guarantees the highest European quality standards for every instrument.
Osmose 61: A Bigger Range, Same Innovation
With 61 keys, Osmose 61 offers greater harmonic and melodic freedom, perfect for two-handed playing, complex arrangements, and live performance. It retains everything that made the 49-key model revolutionary: the expressive 3D keybed, MPE integration, high-end interface, and premium build quality — giving musicians the choice to stay with 49 keys or step up to 61.
EaganMatrix Always at the Core of Osmose Sound
Powered by the legendary EaganMatrix engine, developed by Haken Audio, Osmose delivers rich acoustic textures and complex synth sounds that react intuitively to every gesture. Its versatile engine supports physical modeling, FM, subtractive synthesis, and more, complemented by onboard reverb, delay, compressor, and EQ.
With 580 factory presets and up to 2048 preset slots, Osmose offers a complete, performance-ready palette while staying true to the expressive soul of the instrument.
A Living Ecosystem
Osmose is more than an instrument; it is at the center of a living ecosystem that grows and evolves with its community of musicians.
Expressive E has expanded the software ecosystem around Osmose, offering a rich library of sounds through partnerships with renowned companies such as U-He, KiloHearts, Dawesome, AAS, and Synapse Audio. These collaborations are featured in the Expressive Suites, available on the Expressive E website.
Proprietary software explicitly designed for Osmose — such as the new Soliste (physically modeled solo strings) and Noisy 2 (a dual-layer, noise-driven synth) — has also been released to further expand musical possibilities.
This ecosystem is designed to grow. Expressive E is committed to making Osmose evolve over time, with regular firmware updates bringing smoother workflows, deeper DAW integration, and an ever more fluid user experience.
Coming soon, a series of mini-synths with intuitive editors for the EaganMatrix will make sound design more accessible than ever, transforming what was once a complex interface into an expressive, user-friendly platform for creativity.
Made in Europe: A New Factory in Poland
Until now, Osmose production has been outsourced to China. To meet global demand while guaranteeing uncompromising quality, Expressive E is taking a decisive step forward: a new assembly facility in Poland, fully dedicated to Osmose and future instruments.
For the first time, the company will no longer rely on subcontractors. Every stage, from design to assembly, will now be handled in-house. This shift gives Expressive E full control over the lifecycle of its products, ensuring reliability, sustainability, and the highest European quality standards.
It’s an ambitious challenge for a young company, but one driven by passion, conviction, and a clear vision: to craft instruments that embody both innovation and integrity, from the very first design to the final note — and to gain even greater freedom to innovate.
Technical Highlights
- Keys: 61 full-size, fully expressive
- Polyphony: Up to 24 voices
- Gestural Control: Tap, Press, Pitch Bend, Vibrato, Aftertouch, Pressure Glide, Note Off, Expressive arpeggiator
- Sound Engine: EaganMatrix by Haken Audio
- Built-in Effects: Reverb, Delay, Compressor/Drive/2 convolution engines, pre & post reverb/delay, EQ
- Preset Management: 580 factory presets, up to 2048 preset slots
- Interface: Color LCD, 6 encoders, pitch/mod sliders, octave/preset buttons
- Pedal Inputs: 2 continuous (assignable)
- MIDI: DIN In/Out/Thru, USB Type B
- Audio Output: 2x 1/4” TRS line, 1x 1/4” TRS headphone
Technical Specs
Shipping Details
How much is my shipping?
Shipping is automatically calculated before you submit your payment information. Simply add items to your cart and proceed to the checkout page, where you'll be offered shipping options and their prices. In the UK, 'next working day' shipping is free if the order value is over £150, and £5 otherwise. We can also ship on a 'next working day before 12pm' service, which costs £6 for orders over £150 and £7.50 for orders under £150.
Shipping to mainland EU typically costs between £7 and £20, depending on the shipping method and the size and weight of the order.
Do you ship to my country?
Almost certainly - the site will give you an estimate of shipping costs if you add an item to the cart and then enter your country and postcode. If you have specific requirements (such as if you prefer UPS over FedEx, for example) then let us know in advance and we'll try to work something out for you.
Shipping methods
We use a combination of DPD, Royal Mail and Parcelforce for the UK, and for international orders it's either DHL, FedEx, UPS, Royal Mail or Parcelforce depending on where you are in the world. If you have a particular preference then try to let us know BEFORE you order so we can look into it for you. Please note that there may occasionally be additional shipping charges if you live in a remote area, depending on what surcharges are applied by the shipper. We'll get in touch to discuss this with you in such cases.
Dispatch times
For UK orders, we aim to dispatch the same working day if we get the order before 16:00. If you have a really urgent situation then of course drop us an email before ordering and we'll always do our absolute best to accommodate you.
For international orders, we normally dispatch the same day if we get the order before 13:00 but again, occasionally it might be the next day before we can send it out, and sometimes the couriers may come to collect a little earlier than scheduled which would also push an order into the next day.
Saturday/Sunday shipping
If you're in the UK and you order before 16:00 on a Friday then we can send something for a Saturday or Sunday delivery with DPD. This is FREE for order values over £350, £5 for order values between £75 and £250, and £7 for order values under £75. (NB: this applies to UK mainland addresses only). Please note that any orders placed after 16:00 on a Friday will ship on the Monday.
International shipping times
Since April 2020, the couriers we use have suspended guarantees for shipping times, so even though we're paying them for priority services - 24-48 hours for most of the world - in practice it's often an extra day on top and sometimes it can be longer. There is absolutely nothing we can do about this, unfortunately. If you are outside the UK and it's a life-or-death situation where you absolutely MUST have that passive mult for the next day then... it may be better to find a local supplier.
Pre-orders
If a product is listed as a pre-order, it means we've ordered it from the supplier but it's not physically in stock yet. The product listing will include an estimated shipping date based on the best information we have from the supplier, but do bear in mind this is subject to change and is not a guaranteed date.
If you place an order containing a mixture of in-stock and pre-order items, we'll normally hold off on shipping anything until the pre-order item(s) have arrived, rather than splitting it into multiple shipments. If you need the in-stock items sooner, we'd recommend placing separate orders. As always, please get in touch if you have questions.
