The Ortofon MC Diamond / MC Anna Stylus Guard is a replacement protective cap designed to fit Ortofon's flagship Exclusive Series moving coil cartridges, including the MC Diamond and MC Anna.
The stylus assembly is one of the most fragile and exposed parts of any phono cartridge. Fitting the guard when the cartridge is not in use helps shield the cantilever and stylus tip from accidental knocks and from the dust and airborne debris that can degrade playback over time.