Intellifiber is a new fiber created from piezoelectric material. Extraordinarily different from conventional materials, this fiber (according to Head) transforms the mechanical energy from ball impact into an electrical response that stiffens the racquet for ultimate power. Intellifibers are integrated on both sides of the throat area. An electrical impulse actively changes the shape of the fibers - in less than a millisecond - at ball impact.
According to Head, in less than the first millisecond of ball impact, Intellifibers stiffen and reduce bending in the throat area for unmatched power in current racquet design. Unlike mechanical energy, electrical energy does not create vibrations. Therefore, 20% of the vibrations are immediately eliminated upon ball impact for optimum comfort.