Exclusive HyperElliptical DN-56ST for OC-56V as found in the ONKYO PL-33 turntable
Due to the built-in electronic eye cartridge, replacing the needle is the only way to improve its audio quality. So this hyperelliptical diamond stylus is the highest quality upgrade path for your PL-33.
This needle is of a special design with an opening for an "electronic eye" to see a reflection of the record surface for the purpose of programming the player to play certain tracks. So, you cannot change the cartridge to another type. You must use only this needle type DN-56ST stylus on the factory supplied ONKYO OC-56V cartridge.