Since its release, the Expressive E Osmose has been held up as one of the most sophisticated MPE instruments on the market, thanks to a magnetic, pressure- and motion-sensitive keybed that lets players bend, slide, and lean into notes with almost acoustic-instrument nuance. The catch was always the price and the fact that you were paying for a built-in synth engine whether you wanted one or not. Expressive E's answer, unveiled at Superbooth 2026, is the Osmose CE — a controller-only edition that keeps the keybed and drops the internal sound engine.
What's different about the CE
The Osmose CE ships in 49-key ($999) and 61-key ($1,199) configurations, and functionally it's the same touch-sensitive surface that made the original Osmose stand out: continuous per-note pitch, pressure, and side-to-side motion, all transmitted as full MPE data over USB or 5-pin MIDI. What's gone is the onboard synthesis engine, which means the CE is built specifically to sit in front of software instruments rather than to be a self-contained sound source.
That trade-off is deliberate. Expressive E's own Ctrl-e software layer maps the keybed's gestures onto third-party plugins, so the CE is pitched less as "Osmose lite" and more as a dedicated performance controller for producers who are already deep into a software synth ecosystem — think Serum, Pigments, or any of the growing list of MPE-capable instruments covered elsewhere on this site.
Why this matters for MPE adoption
Price has been one of the biggest barriers to MPE hardware. A full synth-and-controller combo asks a lot of someone who just wants a more expressive way to play their existing plugins. By unbundling the sound engine, Expressive E is effectively making the case that the keybed itself — the gesture vocabulary — is the product worth paying for, and that the synthesis can happen anywhere else in your rig.
It also puts the CE in more direct competition with other controller-first designs, like Roger Linn's LinnStrument and ROLI's Seaboard Rise 2, both of which have built loyal followings among musicians who want per-note expression without committing to a specific synth engine. Where the Osmose CE differs is in its playing feel: rather than a flat, continuous surface, it retains discrete key centers with springy, synth-like resistance, which some players find more intuitive coming from a traditional keyboard background.
Early reactions
Reviewers who got early hands-on time, including a detailed write-up from Sean Kim's Arts and Tech blog, have generally praised the CE as a more accessible entry point into the Osmose gesture set, while noting that the value proposition depends heavily on how deep a buyer already is into MPE-compatible software. For someone still using MPE only occasionally, the price gap to a standard MIDI keyboard remains significant. For someone who has already built a session around expressive synths and just wants a better way to play them, the CE closes a gap that's existed in the market for a while.
Where it fits in the wider MPE landscape
The timing lines up with a broader shift documented by outlets like Sound on Sound and Gearnews, both of which have recently updated their buying guides to reflect a fast-growing field of MPE-first hardware. Between Ableton's Push 3 doubling as an MPE controller, Novation's Launchkey Hybrid bringing Seaboard-style expression to a standard keybed, and now the Osmose CE, 2026 is shaping up as the year MPE hardware stops being a niche accessory and starts looking like a standard option across price points.
For musicians and sound designers who've been curious about MPE but hesitant about committing to a full synth-and-controller bundle, the Osmose CE is worth watching — and likely a sign of more unbundled, controller-first designs to come from other manufacturers.