Ask professionals, what is the effect of Harmani's patent "V-shaped string presser" in the top 10 piano?

V-shaped string press is different from ordinary semi-circular string press: V-shaped string press is in contact with strings and arranged in a straight line, which can expand the effective range of string vibration and make the sound more expressive and overtone; However, the contact between the semi-circular string presser and the strings is a plane, and the effective range of string vibration is relatively small. So Hamani's high-pitched sound is very rich and brilliant.