Does anyone know where I could get one? I had one ages ago but didn't find it anymore. It has a small "coin" battery, a power switch and a mechanism that moves the electric magnet up and down in order to anti-magnetize the head. I have some 80's HiFi -magazine that had some of those tested and those cheap cassettes should work very well. Even better than some handheld "pro" equipment..
Something like this
http://www.patentgenius.com/patent/5398146.html
Something like this
http://www.patentgenius.com/patent/5398146.html
