Can anyone tell me about CD demagnatizers?


Do they make a difference? If so what sort of difference do they make? Are they worth paying say $150 for?

Thanks,

KF
128x128tok20000
I have the Bedini Ultra and the RS bulk demag unit, but don't use either on a regular basis. Any improvement is very subtle. The very expensive Furutech unit is supposed to be the best demag available for CDs, Cable Co may let you try one if you are interested. There is a review in Stereophile on the Furutech, also at 6 Moons:

http://www.6moons.com/audioreviews/audioreviews.html
Aluminium foil is the cheapest!! Close to nothing.
Fold a piece big enough to put the CD in between and slide one hand over the foil. It's so simple you won't believe but it really works. The aluminium just takes the static charge away - nothing else do the pricey units.There isn't actually "MAGNETISM" in a plastic disc.....
Good luck - try it - you will like the result!
feel the same way about the bedini.. doesn't do a thing to the sound for me.. if it does, i must not have good enough hearing..
Aida w, maybe there are ferrite compounds in a cd.
At least Furtuch claims it and I hope somone will be able to shed some more light on it:

"Furutech claims that impurities in the weak-magnet 99% aluminum alloy of any CD's storage side contain strong-magnet elements of iron, nickel and cobalt -- as does the ink on the label side --that are inductively magnetized while repeatedly spinning inside a player. This is said to inhibit the laser's ability to pick up signal and instead triggers the error correction interpolation mechanism for reduced S/N ratio."