The phrase encapsulates the search for an instrument that simulates the feel of an acoustic piano through electronic means. This emulation is achieved using keys designed to offer resistance and weight similar to those found on traditional pianos, allowing for nuanced control over dynamics and expression.
Such features are particularly important for pianists accustomed to the mechanical action of acoustic instruments. The benefits include a more natural playing experience, improved transferability of skills between acoustic and electric pianos, and the development of proper technique. Historically, early electronic keyboards lacked this realistic feel, making weighted action a significant advancement in digital piano technology.