Not sure if I'm allowed to ask this but, I was given some cassette tapes with G.D.I stamped on them I have looked on the Web but can find out nothing , anyone know what it means ?
Welcome to Stereo2go Tess77 G.D.I is not something I have come across, but it could be something to do with Grace Audio. Can you post an image of it?
Welcome to the forum, please post a photo of the tape to help us more. They made hundreds, if not thousands of different brands of tapes back in the heyday or it could be the name of the contents.