There is an excellent range of acoustic piano voices on offer with this series. The F701 has a total of four grand piano voices, and 5 upright piano voices and within them, there are plenty of variations to suit different styles of music.
The F701 uses Roland's SuperNatural piano sound engine to create its core piano sounds. The SuperNatural sound engine is based on a sampled sound, but there is no looping or velocity switching of the recordings. This is because the piano is modelling the behaviour of an acoustic instrument in real time, based on your playing technique. But don’t worry if you don’t understand all this! What matters is the end result, and all you really need to know is that the sound engine produces a superb and expressive piano sound.