To tell you the truth those PSR series with built in speakers have REALLY BAD resale values and they are exstremely limited in sound shaping qualities . Not to say they are bad all the way around but they are not the best purchase either . I suggest looking at used YAMAHA synthesizers like the SY-55 , SY-77 , V-50 , DX-7 , SY-22 , SY-35 . They will have the pianos , strings , and other acoustic sounds that you are looking for in a professional model but since they are used , you can get them at a good price .