Behind the scenes at Koss — see what goes into making their world famous headphones

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MILWAUKEE -- Kramp spent the morning at Koss. Koss has been making their stereophones since 1958. He is taking a look at what goes into making their world famous headphones.

About Koss (website) 

In 1958, John C. Koss teamed up with engineer Martin Lange, Jr. to develop a portable stereo phonograph player with side-wing speakers. The pair demonstrated their new stereo record player at a Wisconsin audio show. One of the product's unique features was a privacy switch, which allowed listeners to hear music by plugging in the world's first SP/3 stereophone. The stereophones were intended to be an accessory to demonstrate the high-fidelity stereo sound that the portable phonograph player delivered.

The revolutionary sound of the Koss SP/3 stereophone became the hit of the show.