![Sennheiser HD 4.50 BTNC vs Sennheiser HD 4.40 BT Wireless Side-by-Side Headphones Comparison - RTINGS.com Sennheiser HD 4.50 BTNC vs Sennheiser HD 4.40 BT Wireless Side-by-Side Headphones Comparison - RTINGS.com](https://i.rtings.com/assets/products/OcL6dBuU/sennheiser-hd-4-40-bt-wireless/design-3-small.jpg)
Sennheiser HD 4.50 BTNC vs Sennheiser HD 4.40 BT Wireless Side-by-Side Headphones Comparison - RTINGS.com
![Sennheiser HD 4.50 BTNC vs Sennheiser HD 4.40 BT Wireless Side-by-Side Headphones Comparison - RTINGS.com Sennheiser HD 4.50 BTNC vs Sennheiser HD 4.40 BT Wireless Side-by-Side Headphones Comparison - RTINGS.com](https://i.rtings.com/assets/products/zQg5XVBA/sennheiser-hd-4-40-bt-wireless/design-small.jpg)
Sennheiser HD 4.50 BTNC vs Sennheiser HD 4.40 BT Wireless Side-by-Side Headphones Comparison - RTINGS.com
![Sennheiser HD 4.50 BTNC vs Sennheiser HD 4.40 BT Wireless Side-by-Side Headphones Comparison - RTINGS.com Sennheiser HD 4.50 BTNC vs Sennheiser HD 4.40 BT Wireless Side-by-Side Headphones Comparison - RTINGS.com](https://i.rtings.com/assets/products/jqPQXlSB/sennheiser-hd-4-50-btnc/comfort-small.jpg)
Sennheiser HD 4.50 BTNC vs Sennheiser HD 4.40 BT Wireless Side-by-Side Headphones Comparison - RTINGS.com
![Sennheiser HD 4.50 BTNC vs Sennheiser HD 4.40 BT Wireless Side-by-Side Headphones Comparison - RTINGS.com Sennheiser HD 4.50 BTNC vs Sennheiser HD 4.40 BT Wireless Side-by-Side Headphones Comparison - RTINGS.com](https://i.rtings.com/assets/products/XBmqJD8L/sennheiser-hd-4-50-btnc/controls-small.jpg)