This heavy Record Puck ensures a firm fit between the record and the platter surface. Record pucks use weight to secure a playing vinyl record against the turntable platter. By holding the two together, the sound performance of the turntable will improve, in timing and depth of sound. We recommend using heavy weight clamps on RPM, Signature & Xtension series turntables. The alternative way to achieve this effect on smaller turntables is our record clamp Clamp it.