elliptical stylus การใช้

A narrow-profile elliptical stylus is able to read the higher frequencies ( greater than 20 kHz ), but at an increased wear, since the contact surface is narrower.
Each contacts the groove differently than the other; the elliptical stylus allows for more groove contact, which increases fidelity, while the spherical stylus makes less contact with the groove, which yields a more sensitive stylus.
The V-15 series also included several industry firsts : the original V-15 model ( introduced in 1964 ) was the first to feature " trackability, " and utilized a symmetrical, bi-radial elliptical stylus.