Digital stage piano. 88 keys PHA II Ivory Feel Keyboard with Escapement. Sound Generator: Conforms to General MIDI 2 System, 88-key Stereo Multi-sampled Piano Sound. Maximum Polyphony: 128 voices, Wave Memory: 256MB (16-bit linear equivalent), Tones: Normal Tones: 242, SuperNATURAL E.Piano: 10, Tonewheel Organ: 10, General MIDI 2 Tones: 256, Rhythm Sets: 5, General MIDI 2 Rhythm Sets: 9. SMF/Audio File Player: File Format: Standard MIDI File: format-0/1, Audio File: WAV, AIFF (44.1 kHz, 16-bit linear), MP3