What kind of piano is a forte piano?

A pianoforte, often abbreviated to piano, is an acoustic, stringed musical instrument invented in the 18th century, which produces sound when hammers lined with felt strike the strings. The strings are made of steel and run across a cast-iron frame that is usually encased in a wooden cabinet. In addition to the felt-lined hammers, modern pianos consist of a keyboard (with keys made of wood and covered in plastic or wood and ivory), pedals on the piano floor that prolong or modify the sound (sustain, una corda), and other mechanical aspects (levers, strings dampers and other small pieces.)

The pianoforte is distinguished from its predecessors by its ability to control dynamics via a keyboard mechanism that allows the pianist to vary the velocity and force of the hammers by adjusting how hard the keys are pressed, resulting in softer or louder tones ("piano" and "forte"). For this very reason, it takes the name pianoforte; a union of the Italian words "piano" ("soft") and "forte" ("loud"). This dynamic expressiveness allows pianists an unparalleled level of technical expressiveness and dynamic versatility.