An earlier magnetic tape cartridge technology introduced by Lear Jet in 1964 as Stereo 8, although widely known by its 8-track moniker. Stereo 8 was an 8-track version of the 4-track Muntz ...

If you want dig into the workings of an 8-track player, check out Jenny List’s retro teardown from 2017. Does anyone still use 8-track tapes any more?

It doesn’t really matter whether you’re working with an 8-track player or a regular cassette ... are simply placed inside an old 8-track tape, with holes cut in the chassis for the charge ...