- Keystage-49: Polytouch keyboard, 49 keys
- Keystage-61: Polytouch keyboard, 61 keys
- Velocity sensitivity, aftertouch, and polyphonic aftertouch
- Velocity curves: 21 (—10–0–+10)
- Octave range: 7 (—3–0–+3)
- Pitch bend wheel
- Modulation wheel
- 8 parameter control knobs
- VOLUME knob
- SETTINGS button
- WRITE button
- EXIT button
- SHIFT button
- ARP button
- CHORD button
- VALUE ^/ buttons
- VALUE dial
- PAGE —/+ buttons
- Transport buttons
- TEMPO button
- OCTAVE —/+ buttons
- Main display: organic EL (electro-luminescence) display
- Sub display: organic EL displays × 8
- Number of scenes: 16
- Arpeggio rhythm patterns: 20
- Preset chord sets: 32
- User chord sets: 32
- USB port
- MIDI IN, OUT connectors
- EXPRESSION jack
- DAMPER jack
- AUDIO OUT (L/MONO, R jacks)
- Headphone jack
- AUDIO OUT (L/MONO, R): 6.3 mm TS phone jack (unbalanced)
- Headphones: 6.3 mm stereo phone jack
- MIDI: IN, OUT
- USB: Type B
- MIDI/audio interface: MIDI 1 in/1 out, Audio 2 ch out, Audio format: 44.1 kHz, 16-bit
- Power supply: USB bus power or AC adapter (DC 9 V, Korg KA350, sold separately)
- Current consumption: 5 V/500 mA or less (when powered via USB)