I'm just beginning to learn the piano so my rating will be pretty limited to super novice use. But what I can say is that the tones are great, both lows and highs. It has so many sound variations and synthesizers that it makes it hard to get bored with it. The only negative I can say about it is that the keys sound like very thin hollow plastic when pressed and some make a creaking sound if not pressed in a perfect downward motion. But for the price and all of its features I am very impressed.