Yamaha P45B 88-Key Portable Digital Piano+PA150 Power Supply+Pedal+Bench+Stand Yamaha P45B 88-Keys Graded Hammer Standard Contemporary Digital Piano keyboard in Black with AMW Stereo Sampling Sound With Yamaha slim,lightweight, compact easily portable grand digital piano lets you set up complex sounds for live performance. Advanced Wave Memory Stereo Sampling recreates natural instrument sound in stereo. GHS weighted action Portable keyboard is heavier in the low end and lighter in the high end, just like an acoustic piano. Advanced Wave Memory Stereo Sampling recreates natural instrument sound in stereo. 64-note polyphony allows the player to perform moderately dense piano passages, even using heavy sustain pedal, with few or no dropped notes being cut off. The USB to HOST port allows you to connect and interact with a wide variety of educational, music creation or music entertainment applications on a computer or mobile device.