Introducing the beautiful Beyerdynamic DT 48 from 1937. The world's first dynamic driver headphone. Is it just me, or has headphone design declined since then? : r/headphones
When were the first wireless headphones invented? - Quora
Beats Announces its First Wireless Earphones | Time
Philips Fidelio world first: NC1L on-ear headphones with Active Noise Cancellation go battery-free with direct digital connection to your iOS device | Business Wire
A Partial History of Headphones | Arts & Culture | Smithsonian Magazine
The History of Headphones | Cool Material
not an audiophile) The first hifi headphones I try are the hd800.. Now everything sounds like garbage. What have I done? : r/headphones
1881 to Present - The Amazing Evolution of Headphones
1880s - How headphones evolved over the years | The Economic Times