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Demagnetization for MC - good or bad?

Over the years I have always used the Aesthetix MC Demagnetizer on my cartridges as a matter of course but must admit I had never identified any audible improvement afer treating the cartridge. I recently installed a Benz Micro Ruby 3H on the LP12/SME 309 combo and made an inquiry to Benz as to their opinion on demagnetizing. Their response was that it should never be done as, in their words, it "weakens the magnet". Would anyone care to comment on this situation?
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peterayer
1,382 posts
 
I used to have one of those Aesthetix units and stopped using it when I heard that it could be doing damage. So my new cartridge has never seen it. I also never really heard any improvement when I used it on my old cartridge.

Now I degauss my system by playing the Cardas Frequency Sweep LP once a week. That does make a noticeable and substantial improvement.
dopogue
1,773 posts
 
I had the exact opposite reaction. Never could hear a bit of difference after using the Cardas LP -- repeatedly -- but the Aesthetix demag (built into my Rhea phonostage) opens up the sound.
oilmanmojo
472 posts
 
i have seen similar warnings on Van Den Hul site. I have never used one but since a cartridge is an electrical generator using a magnet, i do not know why you would want to "demagnetize" it

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