It should work fine. There is a theory that says the cable will also become magnetized, but I don't much subscribe to that. One thing that I don't think is covered in the instructions is that the tonearm should be in the down position--have the needle resting on an LP (not moving). This centers the coil (assuming an MMC) and therefore should give the best results for demagnetizing. Some people have even used this unit while playing the Cardas sweep record and swear by it. I have tried this and can't tell any difference between just doing the Aesthetix resting on an LP and playing it in conjunction with the Cardas--although the test is virtually impossible because once you've done one the effects of the other are minimal or non-existent.
Question about Aesthetix cartridge demagnetizer...
I just picked one up and the instructions say to connect the tonearm cable to the Aesthetix unit and start the process of cartridge demagnezitation. Question...can I use another cable (just easier then unplugging my tonearm cable from my phono amp) to connect the cartridge and the Aesthetix unit? Must it be the same cable? In other words.... does the cable need to get zapped by the Aesthetix unit as well??