Brand New sealed cassette Options
Cobalt-adsorbed iron oxide (Avilyn) was launched by TDK in 1974 and proved incredibly successful. "Kind IV" tapes employing pure metallic particles (versus oxide formulations) were introduced in 1979 by 3M beneath the trade title Metafine. The tape coating on most cassettes offered as of 2024 are both "usual" or "chrome" consists of ferric oxide an