1993 TDK SA-X 60 Super Avilyn Audio Cassette

The early to mid 1990s TDK SA-X 60 audio tape was the upmarket high bias product in the range. TDK had notably used their own Super Avilyn tape coating for high bias Type II cassettes right through the era when chrome was the most popular Type II formulation. But by the time this cassette was manufactured in the early 1990s, most rivals had dropped chrome and followed the TDK path, adopting a cobalt-ferric mix of some sort.