Active noise reduction Yes Bose The company's pioneering technology was put forward by its founder Amar G. Bose during a flight because he could not stand the noise of aircraft. The principle is that the noise reduction system generates the reverse sound wave equal to the external noise to neutralize the noise, so as to achieve the effect of noise reduction. In 1989, BOSE launched active noise reduction earphones, which were mainly used in commercial and military battlefields for a long time (such as protecting the hearing of pilots and ground crew). In the field of active noise reduction, BOSE is the leader, and its latest Bose QuietComfort 20 is the leader.

Bose QuietComfort 20 is the latest active noise reduction earphone launched by Bose, which has greatly improved the noise reduction performance and wearing comfort. Currently in The price of the last earphone is 249 dollars. Considering that Bose products rarely reduce the price, and when placing an order in Buydig, there are usually physical coupons worth 10 dollars less next time when the order is more than 50 dollars or 15 dollars less next time when the order is more than 100 dollars (there are still two in the hands of a small editor), you can start if you need them.