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used by telephone operators and weighted almost 10 pounds
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created by Nathaniel Baldwin in his kitchen and sold it to the US Navy and it was later used during WWI
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followed the design of the modern headphone and led AKG to quit the film equipment business and focus just on audio
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Koss wanted buyers to experience music as if they were experiencing it live
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Created an unprecedented sound profile, employing the principle of a currentless charge
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Sony created the first portable headphones and cassette player
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Created to be more comfortable than in-ear headphones
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First created for pilots to protect their ears during flights
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it followed the design from 1910 and it was sold with the Ipod
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Designed for deep base and good sound quality