The X-Poly is a free upgrade to the Poly-850 for Windows and OS X.

Apart from being a maintenance update to improve compatibility for the latest OS X and Windows editions and multiprocessor environments, it adds very useful new features.

Features/Changes:

Full Stereo engine

Panorama knob for both oscillators

Dual Voice switch for thicker patches

Enhanced interface

Release stages are now semi-log (sounds better)

Zero CPU usage when idle

Feedback/Modulation controls added to Chorus module

Maximum polyphony upgraded to 20 voices

Noise generator is now stereo

Value display for all knobs

Additional presets added

LFO Rate range extended

Amplitude responds to velocity

Bugfixes:

Multiple instances on multiple cores work now

Visual Glitches in the option menu fixed

Keyboard now responds when triggered via MIDI

The X-Poly is available to all registered users in the service area.