Apart from its highly-regarded headphones, Grado makes quite a wide range of cartridges such as this one, the Grado Reference Master 1. This is unusual in one particular respect: all of them come under the broad heading of ‘moving magnet’.
The majority of high-end cartridges, now and back to the 1950s, have used the moving-coil principle, but Grado explains on its website why this is not necessarily the answer to all the world’s ills and resolutely produces high-end moving-magnet designs.
Some of these are low-output types that will connect to the ‘moving coil’ [...]