Keyboard:88-key Tri-sensor scaled hammer action with ebony and ivory feel3 sensitivity levels, offSound Source:AiR (Acoustic & intelligent Resonator)Multi-dimensional Morphing AiR Sound SourceTones:Maximum polyphony: 128Number of built-in tones: 250Duet ModeLayer, Split, Octave, ShiftSimulator:Hammer Response Preset for piano tonesDamper Resonance Preset for piano tonesDigital Effects:4 types of reverb4 types of chorus-3 0 +3 brillianceDSP preset for some tonesKey Transpose: 25 steps (-12 se