As far as transduction is concerned, there are three principal types of cartridge: moving magnet, moving coil, and ceramic. Let's look at all three. Moving magnet (MM) and moving coil (MC ...

one coil for the left side and one for the right. "Moving magnet" cartridges have the magnet attached to the end of the cantilever, while "moving coil" cartridges place two tiny coils on the end.