Using noise-canceling headphones to listen to music at appropriate decibel levels or during everyday activities is not harmful to your hearing. However, using noise-canceling headphones in place of sound-blocking devices, which are more effective, can result in NIHL. For example, if you are exposed to loud noises at work, it is not appropriate to wear noise-canceling headphones in lieu of approved hearing protection devices, such as ear plugs. Listening to noise-canceling headphones at volume levels greater than about 85 decibels can be harmful to your hearing.