Any of several devices used to erase recordings on magnetic tapes and films or to demagnetize magnetic recording heads.
"Doctor Coban, It was with a great deal of pleasure that I first played the CD's you transferred from a reel-to-reel tape recording that I had made of a radio broadcast over 46 years ago. The results were outstanding. The quality is excellent with no sign of hiss or other tape noise after your Sound Restoration. I admit to some anxiety in ..."