Alesis Concert 88-Key Digital Piano with Full-Sized Keys

88 premium full-sized semi-weighted keys with adjustable touch response 10 built-in premium voices with the ability to split or layer 2 voices simultaneously 20-watt speakers and 128-note max polyphony for realistic sound and playability Lesson mode divides the keyboard into two areas with the same pitch and voice Built-in metronome with tap tempo can be easily adjusted from 30-280 BPM Easily adjustable Reverb and Chorus FX; Pedal Resonance feature Stereo RCA AUX outputs for connecting to a mixer, amp, or other sound system ¼-inch (6.35mm) headphone output mutes the internal speakers for private practice USB-MIDI output for use with educational software or virtual instrument plugins Sustain pedal included Includes a power adapter or power with 6 "D" Cell Batteries (not included)