Yamaha PSR-E473 61-Key High Level Portable Keyboard With Power AdapterThis Yamaha PSR E473 keyboard delivers on all the great tones and playability of larger models with streamlined design and easier portability. 820 voices span a wide spectrum of sounds for any player to sit down and lose themselves in. Additional musical features including Quick Sampling and Groove Creator expand on the functionality of this keyboard to allow players to build up alternative sounds and styles alongside the traditional. A USB connection