Whether you're practicing at home or away, performing solo or in a band, the Yamaha P-155 digital piano offers professional quality sound with our legendary piano touch. Thanks to the top-shelf Yamaha digital piano technologies like advanced sampling methods and the ultra-expressive GH (Graded Hammer) keyboard, musicians don't have to choose between portability and piano quality—the quality you expect from a company that's been building world-class acoustic pianos for over a century. In the P-155, Yamaha crafts that heritage into a slim cabinet. Keyboard88 keys, Graded Hammer (GH) Tone Generation4-level AWM Dynamic Stereo Sampling Pure CF Sampling YES Key-Off Sampling/ Stereo Sustain Sampling YES Damper Resonance YES Polyphony (Max.)128 Voices17 Reverb4 types Brilliance3 types Effect4 types Dual YES Split YES Metronome YES Tuning/Transpose YES Scale Tuning Types7 types Song Recording2-track recording/playback, 3 User Song Preset Songs7 Demo Songs, 50 Piano Preset Songs Jacks & connectors MIDI IN/OUT Headphones2 (stereo 1/4" jack) Pedals Sustain Pedal, AUX Pedal AUX OUT (Variable)L/L+R, R (1/4" jack) USB TO DEVICE YES (song data storage) Amplifiers12W x 2 Speakers(12 x 6) cm x 2 Dimensions (W x D x H)52-1/2" x 16-13/16" x 5-1/2" Weight18.6 kg (41 lbs.) https://www.long-mcquade.com/10285/Keyboards/Digital_Pianos/Yamaha/P155_-_Digital_Piano_Black.htm