What is Scaled Hammer Action?

Scaled Hammer Action is a type of action used on some digital pianos and synthesizers, which helps replicate the feel and response of an acoustic piano. It utilizes a graded weighting mechanism, where the keys in the lower register have a heavier feel, while the keys in the upper register have a lighter feel. This simulates the natural feel of an acoustic piano, where the hammers that hit the strings are heavier in the bass section and lighter in the treble section.