Cartridge Demagnetization: Moving Magnet/Iron vs Moving Coil Processes

Moving Magnet cartridge must always be MAGNETIZED. 
Do not do anything to de-magnetize it.

For MM/MI you can use Cardas Frequency Sweep LP that ultrasonically clean the cartridge stylus and degauss the entire system.

This is another crazy trick (free of charge), i’m not sure about it, but you can watch the video instruction.

The Cardas LP, great product indeed, I´ve been using it for twenty years ;)

czarivey

"Moving Magnet cartridge must always be MAGNETIZED.
Do not do anything to de-magnetize it."

Well, yes and no.

It is safe to degauss a phono cartridge, but proper procedures must be followed. With a moving magnet cart, the stylus typically must be removed first, as explained in the Sumiko Fluxbuster manual. (The Sumiko was probably the first commercially-made cartridge demagnetizer.)

I have used the Fluxbuster for years and never had a problem. While the efficacy of these devices is the subject of some debate, they are  safe when "used as directed."

I too have a Fluxbuster...but be careful.  Contact your cartridge manufacturer to get their recommendation.  ..especially on high end cartridges with very thin wire with few windings...the flux can actually melt the wire and ruin the cartridge.  I contacted Ortofon who does not recommend the fluxbuster for that very reason.  Cardas has a test record that degauses the cartridge without the blast of electricity (even that small amount).