The tone changes naturally, with no steps, from ppp to fff.
And even when it decays, it does so with natural and subtle variations in tone. This is Roland's "SuperNATURAL Piano sound engine."

This is not an inorganic tone generated by a tone generator. It produces an organic and natural sound, and its infinite range of tone colors gives the player unlimited pianistic expression.
The "SuperNATURAL Piano sound engine" which was born by bringing together V-Piano technology and 88-key stereo multi-sampling technology — consists of 3 elements.

Seamless tone variations according to your touch.

Conventional piano sound engines incorporate several different tones per key for different velocities and switch between different tones depending on touch. Acoustic pianos, however, respond to the player in a completely smooth and natural way, with no "steps."
This natural expressivity was our goal in the development of the "SuperNATURAL Piano sound engine."
Through Roland's unique V-Piano technology, we have been able to achieve natural and seamless variations in tone like that of acoustic pianos.

Smooth and natural tone decay

A characteristic of acoustic pianos is that, after you strike a key, not only its volume but its tone changes as it decays.
However, conventional piano sound engines would let sounds at certain volumes decay with no change in the tone, leading to an unnatural response.

The "SuperNATURAL Piano sound engine" changes all this. With its use of V-Piano technology, it produces a natural decay in which its tone gradually changes as it decays, as it would on an acoustic piano.

Expressivity in every single key

Not only do grand piano strings have different gauges and lengths depending on their range, the number of strings used for each note and the sizes of hammers are different as well. In addition, there are differences in the way the soundboard, body, and other strings resonate depending on the pitch, and this creates the beautiful tone of an acoustic piano where each note has a unique quality.

The HP series was one of the first digital pianos to feature 88-key stereo multi-sampling. Roland first sampled all 88 keys of a variety of world-class grand pianos.
We then analyzed and synthesized these tones using Roland's state-of-the-art digital technology to develop a high-quality, very expressive piano sound.