88 keys, NW-STAGE keyboard (Wooden synthetic ivory weighted keyboard) , Maximum Polyphony-128, Tone Generator -SCM + AWM2 ,Performances Preset -10 x 4 groups x 3 banks- User -10 x 4 groups x 3 banks, External 10 x 4 groups x 3 banks, Parts -6, Voice Block -17 piano voices + 305 other voices, Modulation Effect -Block 49 types, Power Amplifier / Compressor Block -8 types, Reverb -8 types, Master -Compressor 3-band, Master -Equalizer 5–band, Rhythm Number of Kits 14, Number of Patterns -100 Display -24 character x 2 lines, VFD Controllers -Pitch bend wheel, Master volume, Knobs -1 to 3, Part -volume x 6, Gain -Master equalizer x 5 Connectors, Output -PHONES, L/MONO,R (Unbalanced), L, R (Balanced) , Foot Switch-SUSTAIN, ASSIGNABLE, Foot Controller x 2, Mic Input x 1, MIDI IN, OUT, THRU, USB TO HOST, TO DEVICE, Power Consumption -25W, Dimensions -(W x D x H; not including pedal unit) 1,381 x 405 x 174 mm, Weight (not including pedal unit) 25.2 kg

Yamaha digital piano sound and simplicity in a new lightweight, compact design like nothing else you've seen... all at a price point you won't believe. It weighs only 12 lbs!

Because of its similarity to acoustic pianos, a graded action is one of the primary features sought by pianists in their digital instruments. While technically a non-weighted action, the new Graded Soft-Touch keyboard is the first of its kind bringing different levels of resistance without the extra weight of moving hammers the key contributor to the NP-30's fighting weight of only 12 pounds. The end result is a very playable action that will appeal to pianists who want to take their music anywhere.

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.