Plus, to drown out truly loud racket, you have to jack up the volume. I’ll admit, I hate that “thump.” And in addition to safety, it’s one of the biggest reasons that I reach for bone-conduction AfterShokz instead of standard ear canal-obstructing buds. That conventional method’s downfall for runners, of course, is the loud “thump” that rattles your eardrum with each foot strike. Such functionality is typically reserved for larger on- and over-ear headphones smaller buds usually just block out sound by sealing your ear canal entirely. The result is the original noise is muted, if heard at all. This effect is achieved by an acoustic technique called phase cancellation, where the speaker creates another sound wave of the identical frequency but 180 degrees out of phase with the original-its wave shape is the exact opposite of the sound you're eliminating. The biggest difference between the Pro and early models of AirPods is the Active Noise Cancellation feature, which uses a microphone in each bud to measure external noise, plus another to gauge the sounds that slip past the silicone ear tip, to cancel out anything that’s not coming from the speaker itself. And if my first day spent navigating New York City subways and running Jersey City streets is typical, they’ll be the only earbuds you need to cover all of your listening needs. Then again, AirPods Pro come with a premium price tag because they’re doing a lot more under the hood to ensure only your music makes it to your eardrum. Let’s get the big complaint out of the way up front: Some of you will balk at spending $250 on running headphones. Works best with iPhones and Apple Watches.
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