History
Portable battery-operated reel-to-reel tape recorders were introduced in the 1950s, initially tending to be high-priced units for reporters, produced by Uher and Nagra. Lower-priced units became available later. In the mid-1960s Philips introduced the battery-operated compact cassette recorder, originally used for recording speech. At about the same time the 8-track player was introduced. It was very successful at the time, though bulky and inconvenient to use. There was an annoying pause at the end of each track as the program changed.
The compact cassette, although physically much smaller than the 8-track cartridge, became capable of good sound quality as the technology developed, and longer cassette tapes became available. Cassette decks (not portable) were introduced for home use, and this encouraged the production of pre-recorded music cassettes.
The first truly personal cassette player, the Sony Walkman, was introduced in 1979 and sold very well. It was much smaller than an 8-track player or the earlier cassette recorders, and was listened to with stereophonic headphones, unlike previous equipment which used small loudspeakers. Unlike small loudspeakers, headphones were capable of very good sound quality. All previous compact cassette devices could record as well as play back; Walkmans and similar devices often had no recording facility, but took advantage of the pre-recorded cassettes now widely available.
Read more about this topic: Portable Audio Player
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