The Cardas LP, great product indeed, I´ve been using it for twenty years ;)
Cartridge Demagnetization: Moving Magnet/Iron vs Moving Coil Processes
For years I have applied the old, very effective, demagnetization process for Moving Coils: put on a test signal record, detach phono cables, hold pin on one RCA to the can of the other for a minute and then reverse holding other pin to other can. Improvement is dramatic and immediate. Is there an equivalent process, (though not about degaussing the iron I suspect), for Moving Magnet/Iron cartridges with equal improvement results?