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Summary
DescriptionBrandes Superior Matched Tone c. 1919-21.jpg
English: Photo of antique headphones; Brandes manufactured between 1919 and 1921. These were used in early radio work and illustrate the original context of the term "headphones."
Date
Source
Photograph taken of author's headphones and provided by author.
Author
John Davidson
Licensing
Public domainPublic domainfalsefalse
This work has been released into the public domain by its author, JA.Davidson at English Wikipedia. This applies worldwide. In some countries this may not be legally possible; if so: JA.Davidson grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.Public domainPublic domainfalsefalse