Why demagnitize an optical reader?


I've read numerous times now that folks state to demagnetize a CD or optical disc before playing it for best fidelity and accuracy.  I don't see how an optical device, which is non magnetic and made from non magnetic materials benefits from a demag process.   Does anyone have any information to support this?  Other than hype, of course.

Robert

spatialking

Showing 1 response by mastering92

I've heard about devices that claim to do this! 
$500 for 1 unit that will demagnitize CDs, 1 by 1...

If these things actually worked, artists and bands would have their master CD and all copies of it demagnitized before shipping them off to stores...

Now I'm not saying it will never work, but if you take good care of your CDs and keep them without deep scratches, they should be play reliably each time.