For more than a decade, Audio Modeling's SWAM instruments have occupied a peculiar position in the orchestral software world. They sound alive in a way sample libraries rarely do — because nothing is sampled. Every note is calculated in real time from a physical model of a bowed string, a vibrating reed or a column of air. The catch has always been the same: one SWAM instance, one voice. If you wanted a string section, you loaded eight instances and played eight passes.
PolySWAM is Audio Modeling's answer to that limitation, and after a pre-sale that opened on 13 August 2026, the instrument is arriving this month.
Not a patch — a separate instrument
The important detail is that PolySWAM is not a "poly mode" bolted onto the existing SWAM range. It is a distinct product built on the SWAM engine plus what Audio Modeling describes as proprietary voice-allocation technology.
That distinction matters more than it sounds. Making a physically modelled instrument polyphonic is not simply a question of running several copies of the model at once. Each virtual player needs its own state: its own bow position, its own breath reserve, its own micro-timing and intonation drift. If all eight cellists respond identically to the same MIDI input, you get a chorus effect, not a section. PolySWAM's voice allocator assigns incoming notes to individual virtual performers and lets each one behave independently.
The result is that you can play chords, melodic passages, layered pads and complete acoustic ensembles in real time, from a single instance — while keeping the continuous, gesture-driven response that made SWAM worth the CPU in the first place.
Why this matters for MPE players
SWAM has always been a natural fit for expressive controllers. The instruments respond to breath controllers, to MPE controllers, to virtual bowing surfaces — anything that produces continuous data rather than a single velocity value at note-on.
But monophony put a hard ceiling on that relationship. An Osmose or a LinnStrument gives you independent pressure, pitch and timbre on every finger. Feeding that into a one-voice instrument meant throwing most of it away.
With PolySWAM, per-note expression finally has somewhere to land. Press harder on one finger of a four-note chord and that one player leans in. Bend a single note in a held triad and only that string slides. This is exactly the use case MPE was designed for, and it has been conspicuously underserved in the orchestral space — most expressive orchestral writing still ends up as a stack of monophonic tracks.
Presets and collaboration
PolySWAM ships with a preset collection aimed at getting you playing rather than configuring. The library covers intimate chamber ensembles, large symphonic layers, focused brass sections, funk big bands and a range of other instrument combinations. Each one is a pre-configured allocation of the engine across multiple virtual players, so the work of deciding how many performers sit behind a given sound is already done.
The instrument was developed in collaboration with Emanuele Ruffinengo, a Latin GRAMMY-winning producer, arranger and pianist, which shows in how the presets are voiced — they are built by someone who arranges for real sections, not just by someone who tunes models.
Pricing and availability
Pre-orders are open at $279 / €279, against a list price of $399, through Audio Modeling's product page and distributors including Best Service and ILIO. The pre-sale ends at official release, expected mid-September 2026, starting with the desktop version.
If you already own SWAM instruments, PolySWAM does not replace them — the solo instruments remain the right tool for exposed lines where you want absolute control over a single performance. PolySWAM is for everything that needs more than one player in the room.
The broader point
Physical modeling has spent years being praised for realism and quietly avoided for workflow reasons. Polyphony was the largest of those reasons. Removing it does not just add a feature; it changes what kind of music the engine is practical for. For anyone building an expressive orchestral rig around an MPE controller, that is a meaningful shift.
Coverage and further reading: Sound On Sound, rekkerd, Synth and Software.