Compact Cassette
magnetic tape recording format for audio recording and playback
cassette single
cassette tape release of music single
Compact Cassette Type I
Cassette conforming to IEC I standard (normal bias) usually based on gamma ferric oxide, or cobalt-doped ferric oxide, or very rarely metal particle formulations
endless loop Compact Cassette
single-sided, endless-loop subtype of the Compact Cassette for answering machines
Sony X
subbrand of Compact Cassettes
Compact Cassette Type IV
Cassettes conforming to IEC Type IV specification (very high bias), based on metal particles or (rarely) evaporated metal formulation
Compact Cassette Type II
Compact cassette with tape conforming to IEC Type II standard (high bias), typicaly chromium dioxide or ferricobalt formulations, rarely pure metal particle formulations
TEAC Open Cassette
variant of the Compact Cassette with an open metal frame and interchangeable tape reels