The Type III Ferrichrome / Ferro-chrome Audio Cassette

Most cassette-buying consumers of yesteryear will remember normal tapes (classified Type I), high bias tapes (classified Type II), and to a lesser extent, metal tapes (classified Type IV). These were the three options from which consumers would choose. If you look back at the cassette decks from the heyday of analogue home recording, you’ll probably see a reference to each of these three cassette types. Perhaps a physical selector (if it’s a very old deck), but more likely just a series of LED indicators, showing which of the three types the deck has auto-detected, once the cassette is in the machine. Type I, Type II, and Type IV. But no Type III…

Sony FeCr 90 Type III audio cassette tape Continue reading

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