Key Features and Specifications:Keyboard: 61-key, touch-sensitive (velocity-sensitive) with 48-note polyphony.Sounds & Styles: 650 voices (including 12 Super Articulation Lite voices) and 260 : "Keys to Success" lesson modes, Duo Mode (splits the keyboard for two players), and new "Auto Chord Play".Effects/DSP: Reverb, Chorus, and 41 types of DSP effects, plus 152 Arpeggio types.Connectivity: USB to Host (MIDI/Audio), 3.5mm Aux Input, Headphone/Output jack.Recording: 2-track, 1-song recorder.Power: AA batteries or PA-130B AC