The Korg Keystage 49 is a professional MIDI controller with polyphonic aftertouch, MIDI 2.0 Property Exchange support, and MPE compatibility. Eight parameter knobs, each with an individual OLED sub-display, provide visual feedback for every mapped parameter. A built-in USB audio interface (2-channel, 44.1 kHz) eliminates the need for a separate interface when sketching ideas. Features The Polytouch keyboard responds to pressure on individual keys, enabling expressive per-note modulation. MIDI 2.0 Property Exchange automatically configures knob mappings for compatible instruments. 16 scenes store different controller layouts. 20 arpeggio patterns and 64 chord sets (32 preset + 32 user) generate complex musical phrases from simple input. Specifications Keys: 49, Polytouch with velocity and polyphonic aftertouch Controllers: Pitch/mod wheels, 8 knobs with OLED sub-displays Scenes: 16 Arpeggiator: 20 patterns Audio Interface: 2-channel USB (44.1 kHz / 16-bit) Connections: L/Mono and R audio out (1/4"), Headphones (1/4"), Damper (1/4", half-pedaling), Expression (1/4"), MIDI In/Out (5-pin DIN), USB Type B Power: USB bus power or DC 9V adapter (sold separately) Dimensions: 814 x 234 x 82 mm (32.05 x 9.21 x 3.23 in) Weight: 4.2 kg / 9.26 lbs In the Box Korg Keystage 49 USB cable Ableton Live Lite license