This is a useless waste of a whole lot of money. Optical discs are read by lasers, which emit photons, which have no electrical charge and are therefore utterly unaffected by magnetic fields. Drawing around the disc with a green magic marker is actually _more_ likely to have an effect than this junk.

If CDs were made of ferrous metal, it would at least be theoretically possible for them to have a magnetic field.

As is, it’s pure snake oil, targeting gullible audiophiles.

You’ll never see this in a double-blind test, because it doesn’t do anything to any of the media they claim it works on. Neither CDs nor vinyl are magnetically active. It’s just a scam. You might as well buy a neutron flow repolarizer, or a heisenberg compensator.

Peter – but it looks mega cool! Just kiddin .. honestly I wonder who would buy it.

I would love to have enough money so that buying something as apparently useless as this would be ok – looks pretty.