![Sennheiser on X: "Happy April 14, or HD 414 Day!! We want to celebrate the headphones that started it all (1968), so if you still have a pair - or if your Sennheiser on X: "Happy April 14, or HD 414 Day!! We want to celebrate the headphones that started it all (1968), so if you still have a pair - or if your](https://pbs.twimg.com/media/FtrTSMoWYAAQ34m.jpg)
Sennheiser on X: "Happy April 14, or HD 414 Day!! We want to celebrate the headphones that started it all (1968), so if you still have a pair - or if your
![Sennheiser on X: "Since today is 4.14, we thought we'd honor the headphone that started it all – the iconic HD 414. Released in 1968, it went on to sell more than Sennheiser on X: "Since today is 4.14, we thought we'd honor the headphone that started it all – the iconic HD 414. Released in 1968, it went on to sell more than](https://pbs.twimg.com/media/EVjkA7lXQAEuaCB.jpg)
Sennheiser on X: "Since today is 4.14, we thought we'd honor the headphone that started it all – the iconic HD 414. Released in 1968, it went on to sell more than
Sennheiser - #TB: In 1968, Sennheiser launched the HD 414, the world's first open-back headphones, which remain the bestselling full-size headphones of all time. Did you know that we still stock spares
![Amazon.com: 5 Pairs Replacement Ear Pads Foam Compatible with Sennheiser HD414 SL HD-414 SL Headphones : Electronics Amazon.com: 5 Pairs Replacement Ear Pads Foam Compatible with Sennheiser HD414 SL HD-414 SL Headphones : Electronics](https://m.media-amazon.com/images/I/61zjEIlFZjL._AC_UF894,1000_QL80_.jpg)