Stereo sampling AWM (Advanced Wave Memory) tone generation and GHS (Graded Hammer Standard) keyboard. Perfect for beginning students and experienced players alike, the YDP-131 delivers authentic piano sound with exceptionally natural response. With 6 different instrument Voices that utilize our AWM (Advanced Wave Memory) stereo sampling tone generation, and featuring an expressive GHS (Graded Hammer Standard) keyboard, this instrument is a joy to play, practice and perform on. It also features 64-note polyphony, three foot pedals and a built in speaker system. Dual voice capability lets you play two different instrument sounds at the same time, while a 1-track song recorder allows you to capture your original musical ideas and performances.