Korg opsix SE; FM synthesizer; 61-keys with aftertouch; 6 operators; 6 modes (FM, Ring Mod., Filter, Filter FM, Wave Folder, Effect); 80 voices polyphony; modulation section with 3 ADSR envelopes and 3 LFOs; 64 favorite memories; up to 500 storable sounds (350 factory presets + 150 user programs); arpeggiator; Step sequencer (up to 16 steps, up to 6 notes per step); motion sequencing for up to 6 sound parameters; 3 effect instances with 30 effect types; OLED display; pitch and modulation wheel; connectors: 2x line output 6.3 mm jack balanced, stereo headphone output 6.3 mm jack, sustain pedal input 6.3 mm jack, MIDI input and output, USB; incl. external Power Supply 12V (KA-390VI) and hardcase; sturdy metal housing; Dimensions: 1014 x 108 x 344 mm (WxHxD); Weight: 8.6 kg