Halfway up, halfway down
Sennheiser HD 450BT wireless noise-cancelling headphones
On the face of it, Sennheiser’s HD 450BT offers a nice bargain — the full combination of wireless Bluetooth operation and active noise-cancellation offered by the company’s $599 flagship Momentum Wireless model, yet at half the price. This design builds on the previous HD 4.50BTNC — the NC disappears from the name but not from the headphones (as noted in our Momentum Wireless review, Sennheiser now seems to consider NC so ubiquitous as not to merit inclusion in the headline). The new model upgrades to USB-C charging, extends battery life to an impressive 30hrs, and has
