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The First Functional Headphones
The first functional pair of headphones was created by Nathaniel Baldwin, which he sold to the Navy. These were the only way to listen to electrical audio signals before amplifiers were developed.
(Exact date not given)
http://silentdis.co/2012/03/history-of-headphones/ -
The First Dynamic Headphones
The DT-48, invented and manufactured by a German company called Beyerdynamic was a step up in terms of the technology used in making headphones. It had better quality sound and better performance overall. The DT, in DT-48 stood for "Dynamic Telephone". These were sold to the public.
(Exact date unknown)
http://silentdis.co/2012/03/history-of-headphones/ -
The First Stereo Headphoenes
John C Koss, revolutionized the idea of headphones with the Koss SP-3, the first pair of headphones to feature stereo sound. This invention marked a bright future for Koss as he continually created newer and more efficient headphones.
(Exact date not given)
http://pulseaudio.com/the-complete-history-of-headphones/ -
The First Electrostatic Headphones
The Koss ESP/6, a continuation of the Koss line were the first electrostatic headphones made. These headphones marked a great change in the headphones industry, they were lighter. Not only were they lighter, but they also provided more clear and vivid audio.
(Exact date unknown)
http://silentdis.co/2012/03/history-of-headphones/ -
The First Portable Headphones
The Sony Walkman bundled with the MDR-3L2 was the new best thing in this time period as it allowed people to listen to music on the go. Its highlights included the size and form factor.
http://pulseaudio.com/the-complete-history-of-headphones/ -
The First Noise-Cancelling Headphones
Dr. Amar Bose, the founder of the Headphone company we all know, Bose, ingeniously created noise-cancelling headphones that are a huge success today. He found headphones to not be as effective when on planes due to the loud sounds they make. He was determined to find a solution and he did by producing a commercially available product.
(Exact date not given)
http://www.engineersgarage.com/invention-stories/noise-cancelling-headphones -
The First Bluetooth Headphones
The company, Bluetooth Special Interest Group (SIG) was the first to invent Bluetooth technology which allowed people to use their headphones wirelessly.
(Exact date unknown)
https://www.bluetooth.com/media/our-history -
Creation of The Earbuds
Although the actual birth of the "earbud" was earlier, Apple earbuds that came with the ipod made it mainstream and widespread. This started the new craze for earbuds rather than headphones as they were even more portabl.
(Exact date unknown)
http://coolmaterial.com/roundup/history-of-headphones/
