NUX NCK-330 KEY FEATURES ACOUSTIC PIANO TOUCH AT YOUR FINGERTIPS The NCK-330 features the weighted NUX WKJ-03 graduated hammer-action keyboard with triple sensor, escapement and synthetic ivory/ebony keys, offering refined tactile response for a more expressive performance. RICH, DYNAMIC SOUNDS, WITH A MAXIMUM POLYPHONY OF 256 With 143 high-quality sounds, including a German grand piano, and a maximum polyphony of 256, the NCK-330 meets every musical need.