Korg Opsix Module Altered FM Synthesizer, 4U Rackmount/Desktop

The Korg Opsix Module is a compact, versatile digital synthesizer that brings the powerful 'Altered FM' sound engine to both studio racks and desktop setups. As part of the Opsix Mk II family, it offers a refined approach to frequency modulation (FM) synthesis, making this traditionally complex sound design method more accessible and intuitive. The unit features a 4U form factor with removable side panels that serve dual purposes: they allow for secure mounting in standard 19-inch rack systems or can be positioned as adjustable desktop stands for optimal ergonomic positioning during performance or programming sessions. At its core, the Opsix Module employs a six-operator FM synthesis engine, but expands upon traditional FM with its 'Operator Mixer' concept and five different operator modes including FM, ring modulation, filter, filter FM, and wave folding. This 'Altered FM' approach provides vast sonic flexibility beyond pure FM tones. The synth boasts up to 64 voices of polyphony (dependent on patch complexity), 21 oscillator waveforms, 11 filter types modelled after classic Korg circuits, three envelope generators, three LFOs with 23 waveforms, and a comprehensive effects section with 30 different types including delays, reverbs, modulation effects, and dynamics processors. It also includes a 16-step sequencer with motion recording capabilities and an arpeggiator. The synthesizer is particularly suited to electronic music producers, sound designers, and performing musicians seeking a compact but powerful sound module. Its compatibility with existing Opsix, Opsix SE, Opsix MkII, and Opsix Native software sound libraries allows for extensive sound expansion. With support for MIDI 2.0 Property Exchange and polyphonic aftertouch (following software updates), it integrates well into modern MIDI setups. The combination of its flexible physical format, deep synthesis capabilities, and streamlined workflow makes it a practical choice for both studio production and live performance environments where space is at a premium but sound quality and versatility are paramount.