The modern design Optical Read Cartridge is also a Low Eddy design
It is a no eddy design. There’s neither coil nor magnet.
I would refer you to AnalogMagik’s website where they explicitly list DS Audio as being in the top rank for stylus mounting alignment.
In Australia I am protected by the Australian Consumer Law which provides statutory warranties which can be far longer than the manufacturer’s warranty. I am buying my cartridge in Australia from an Australian business.
I am pleased you have found a technology you like. I can assure you I will not be scratching for a hip hop experience.
I am sorry I have not provided an explanation you can believe - one of my personal goals here is to improve my ability to describe difficult concepts as simply as possible, but not more so!

