Expressive E release Osmose 2.1 update

Published 8/5/25

MPE synth gains new oscillator, effects & more

Expressive E have announced the launch of the latest free update for their flagship MPE-capable synthesizer. The Osmose 2.1 firmware unlocks a whole host of new capabilities thanks to simultaneous updates to EaganMatrix and EaganEditor, the Osmose’s DSP platform and programming tool.

What’s New?

The Osmose’s sound engine has been upgraded to version 10.54, which brings an array of new features to the table, including:

A new pulse-width modulation oscillator.
New per-voice bit-crusher, saturation and pitch-shift effects.
Completely reworked global effects algorithms, including a new lush, extra-long reverb.
A new drive mode for the existing compressor.
Two new 24dB ladder filters.

The above features can be adjusted only in the EaganEditor software. But the standalone instrument still benefits from the changes thanks to three key new features:

80 presets with macros fine tuned to reflect the rich and warm new analogue sounds of Osmose’s sound engine.
A new tanh saturation in the Synth tab, which can be adjusted to add subtle to very prominent saturation to any preset.
A new long reverb in the Synth tab, featuring a specific convolution model and longer diffusion settings. The Osmose’s original reverb is still accessible via the Synth tab, and is now named Short Reverb.