Definitely a cartridge, you need a cartridge from well know cartridge manufacturer, not from a turntable manufacturer.
Try to find an MM with better stylus profile and you will get higher resolution for sure. Shibata or LineContact at least.
Try to find a cartridge with lower moving mass and advanced cantilever and you will hear an improvement. Beryllum, Titanium, Ruby or Boron for example.
Some great cartridges are better even with elliptical tip on advanced cantilever like Boron Pipe or Beryllium etc.
One problem: you will not find a new cartridge at reasonable cost with cantilever/stylus like that. So vintage NOS is the way to go.
Try to find an MM with better stylus profile and you will get higher resolution for sure. Shibata or LineContact at least.
Try to find a cartridge with lower moving mass and advanced cantilever and you will hear an improvement. Beryllum, Titanium, Ruby or Boron for example.
Some great cartridges are better even with elliptical tip on advanced cantilever like Boron Pipe or Beryllium etc.
One problem: you will not find a new cartridge at reasonable cost with cantilever/stylus like that. So vintage NOS is the way to go.