1. QC3 looks no different from ordinary portable headphones. The overall appearance continues the rounded style of BOSE headphones (it feels a bit on-ear style), simple and fashionable. The connection between the QC3 earmuffs and the headband is designed with multiple rotatable and adjustable mechanisms, which can ensure the wearing comfort and make it easy to fold and store the headphones. Noise-canceling headphones are ideal for enjoying music while traveling. After turning on the power, the noise reduction effect of QC3 is still very obvious, which can basically eliminate the annoying roar of the engine. It seems that the patented Acoustic Noise Canceling technology that BOSE has always emphasized is not in vain.
2. QC25 has a noise cancellation switch on the right earcup. The noise cancellation function can be used even when the headphones are not connected to the player. The author can clearly feel the noise of the headphones when using them in the office. The noise cancellation effect, whether it is the air flow sound from the vents or the keyboard tapping sound, is significantly reduced after it is turned on. Among the many noises, the QC25 has the most obvious noise cancellation effect on the low-frequency sound generated by the air flow, which is almost completely eliminated. There will be some reservations in the middle and high frequencies, while passive noise reduction completely isolates the sound, but the shortcomings are also obvious. In-ear headphones are not very comfortable to wear, and it is very dangerous to wear them out on the street after completely isolating the sound, so QC25 is very good These problems have been solved. Overall, the QC25’s noise canceling ability is very effective in dealing with low-frequency noise