Noise cancelling over-ear headphones are a type of headphone that actively cancel out external ambient noise using electronic active noise cancellation (ANC) technology. They surround and enclose the ears with large, padded earcups and an adjustable headband for a more immersive listening experience.
Built-in microphones detect outside noise and generate an opposite sound wave to electronically cancel that noise before reaching your ears, resulting in much quieter sound. This allows you to immerse yourself in music, podcasts, or calls without distractions from loud environments like planes, trains, or construction.
Over-ear noise cancelling headphones tend to provide greater noise reduction than in-ear models due to their around-ear seal physically blocking sound as well.
Key features include adjustable ANC levels, ambient aware/transparency mode, touch controls, audio codecs, battery life up to 30 hours, and compatibility with smartphones, tablets, and computers.
Look for those that allow you to adjust the level of noise cancellation and have a transparency mode to let in ambient sound when desired.