Aluminum die-cast platter with 3-speed belt-drive A die-cast, high-inertia aluminum platter is driven by a high-torque DC motor via a durable rubber flat-belt, giving immensely stable playback at 33-⅓, 45 and 78 rpm speeds. New low-resistance spindle A precisely-machined stainless steel spindle and durable brass bearing maintain accurate rotational..