Editing Portable audio player (section)

==History==
Portable battery-operated [[reel-to-reel tape recorder]]s were introduced in the 1950s,<ref>{{Cite web |title=Tape recorders for playing and recording sound |url=https://www.1900s.org.uk/1960s-tape-rec-r-ro-r.htm |access-date=2022-08-05 |website=www.1900s.org.uk}}</ref> initially tending to be high-priced units for reporters, produced by [[Uher (brand)|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 cartridge|8-track]] player was introduced. It was very successful at the time, though bulky and inconvenient to use. There was a 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{{Clarify|date=August 2009}} sound quality as the technology developed, and longer cassette tapes became available. [[Cassette deck]]s (not portable) were introduced for home use, and this encouraged the production of pre-recorded music cassettes.{{Citation needed|date=August 2009}}