Peti SA is a sophisticated virtual instrument that uses hybrid frequency modulation and physical modeling synthesis to recreate the distinctive sounds of the Harmonium and Accordion, both part of the Reed Organ family. Unlike traditional sample-based plugins, Peti SA generates its tones without relying on samples or wavetables. These instruments, dating back to the 19th century and rooted in ancient free-reed traditions, are known for their warm, expressive character. Peti SA captures these qualities by emulating not only the core reed sounds but also the subtle mechanical noises such as bellows air, keyboard clicks, and tremolo effects, delivering an authentic playing experience.

This plugin offers enhanced control over two independent Reed Banks, each with customizable harmonic content and modulation options that allow for nuanced tonal variations. The latest version introduces new parameters like harmonic deviation, phase difference, and key tracking, which improve the emulation fidelity of various harmoniums and accordions. Global settings provide further sound shaping through resonance control, presence equalization, musette-style chorus, and spatial effects. Additionally, Peti SA supports expressive playing via MIDI continuous controllers, aftertouch, and velocity sensitivity, enabling performers to infuse their music with natural dynamics and articulation.

Designed with flexibility in mind, Peti SA features a scalable interface with customizable color schemes and a preset system that includes over 50 carefully crafted sounds, ranging from traditional harmoniums to melodicas and accordions. Its mechanical features like keyboard coupling and bellows modulation add depth and realism, while polyphony settings accommodate different playing styles. The plugin’s name honors the Indian portable harmonium tradition with 'Peti' meaning 'little box,' and 'SA' refers to both the Indian musical note and a nod to the European accordion heritage. Peti SA is ideal for musicians seeking a rich, expressive reed organ sound with modern performance capabilities.