The world is so full of noise that it can be difficult to find the quiet you need to concentrate or to enjoy your favorite music. When you need to block out the sounds of the world, you need a pair of these Active Noise Cancelling Headphones! The Active Noise Cancelling (ANC) circuitry uses four microphones to eliminate up to 95% of external noise, giving you the quiet you need to clearly hear the quietest sections of your favorites music, or without audio content to give you the peace and quiet you need think and concentrate. And when you have the quiet you need around you, activate the bass boost circuit instead, to give an extra low-end punch to your favorite jams. 10dB Bass Boost Active Noise Cancelling (ANC) Comfortable Over-the-Ear In-Line Play/Pause Controls Sound: Life is too short for headphones that dont sound great! We believe that the whole point of listening to music is to hear it as the artist intended. Our engineers and audio experts have spent countless hours listening to and comparing various headphones until we were satisfied we had found models that fit our demanding standards. So buy this Headphone and Save $177.66 Off on Monoprice Active Noise Cancelling Headphone with Bass Boost for $84.99 with free shipping at Rakuten.com.