The VSP-330 Voice Synth Plus VST plugin by G-Storm Plugins is a software synthesizer crafted to emulate vintage human voice synthesized formant choirs and string ensemble sounds. Inspired by the rare VP-330, this second version has been completely redesigned to capture the unique character of the original instrument through advanced synthesis methods. Unlike sample-based plugins, the VSP-330 generates its tones using a newly developed quad-delay ensemble effect, providing a rich and authentic sonic experience.

The plugin features distinct sections for human voice and strings, each equipped with controls to shape the sound in detail. The human voice section includes vibrato, toggles for different octave ranges, an attack-release envelope, and an ensemble effect to create lush textures. The strings section offers similar octave toggles, an envelope for dynamic shaping, a tone control to adjust brightness, and its own ensemble toggle. These elements work together to deliver expressive and evolving sounds reminiscent of vintage synthesizers.

Additional tuning options enhance the plugin’s flexibility, including an 8' shift dial that adjusts the male human voice tuning to achieve unique intervals not available on the original hardware. Pitch shifting controls allow transposition of the keyboard downwards for broader musical range. The user interface provides intuitive feedback by updating slider and dial values as parameters are adjusted, ensuring precise control over the sound shaping process. Overall, the VSP-330 offers an engaging recreation of classic voice and string synth tones with modern enhancements.