Noise-cancelling headphones, explained without the jargon

Noise cancelling has gone from a frequent-flyer luxury to something most people use on the way to work. Here is what it actually does, and what to look for.

How it works

Small microphones listen to the sound around you, and the headphones play back an opposite wave that cancels it out. It works best on steady, low sounds like engines, air conditioning and road noise.

What it cannot block

Sudden or high-pitched sounds, like voices and clattering cups, are harder to cancel. A good seal does a lot of that work, which is why fit matters as much as the technology.

Over-ear or earbuds?

• Over-ear headphones usually cancel more noise, last longer and are more comfortable on long flights.
• Earbuds fit in a pocket, are better for the gym and are easier to wear with glasses or a hat.

Do not forget call quality

If you take calls on the move, look for multiple microphones and wind reduction. Our specialists can tell you which models sound clear on the other end, not just in your ears.

Try before you commit

Comfort is personal. Every pair we sell comes with 30 days to change your mind, so you can wear them on your real commute before deciding.