1995 TDK SF 90 Audio Cassette

The TDK SF 90 of 1995 was TDK’s basic Type II tape. I thought these were very good value and used them a lot. They were pretty much interchangeable with the That’s VX60, offering similar characteristics and reliability at the same sort of price. The tinted casing gave the TDK SF 90 a little visual personality.

1987 TDK D 46 Audio Cassette

I felt that the TDK D audio tape of the mid to late 1980s was very similar to the Sony HF. A basic and cheap Type I with quite a warm sound, relatively low fidelity, and a very similar appearance too by 1987, when the tape in this photo was made. Check the HF link above for a visual comparison.

1987 TDK AD 90 Audio Cassette

Zipping back a quarter of a century to 1987, for a recollection of this TDK AD 90 audio cassette. These were mid-level Type I tapes – normal bias, but formulated to reproduce music at decent, if not jaw-droppingly impressive fidelity.