Top-notch StereoNylavee computer sound bar equipt 4pcs speaker units & 2 independent bass diaphragms provides rich high pitch and powerful bass. Nylavee unique cavity designed computer speakers maximize the loudness of all audio units Premium ConfigurationNylavee computer speakers using double layer neodymium magnets speaker units and mica fiber diaphragms provide excellent audio performance. Nylavee computer sound bar made of non-toxic materials are safer to use