Nexsyn is a hybrid instrument that combines sample based key-map playback with an advanced synthesizer engine. Nexsyn offers deep modulation possibilities of both sample based key-maps and traditional synthesizer components, capable of producing high fidelity stereophonic audio.

An exclusive, 4 Gb, sample library was crafted by Big Fish Audio specifically for Nexsyn. The Extended Waveform Memory (XWM) format, developed by KeyToSound, coordinates large sample based key map files for playback by either streaming from disk, or loading into memory. The XWM format streamlines sample playback to accommodate the complex modulation techniques Nexsyn is capable of applying to the sample based library, drastically reducing load time. The stock XWM library consists of pianos, organs, synths, guitars, basses, reeds, brass, percussion, and effects – all capable of extreme modulation.

Nexsyn is the first software instrument to offer "NetNotes", a preset sharing technology supporting a community of musicians, sound designers, and producers. NetNotes is a method for accessing new presets directly from Nexsyn. NetNotes enables users to upload, audition and download presets, eliminating the “down-time” spent searching preset packs, sample CD libraries or hard drives for a sought after sound. Netnotes directories can be accessed from Nexsyn in real-time right from a host sequencer or multi-track recorder allowing presets to be auditioned in a mix before acquiring them.