Hushed tones: six of the best noise-cancelling headphones

From Bose to Beats, we assess the cans capable of shutting out the world as well as making your music sing

Bose is one of the pioneers of noise-cancelling technology and is often lauded as the best in the business. The QC35 II are the second edition of the company's wireless noise-cancelling cans and set the standard by which everyone else is measured.