If noise-cancelling is a must-have feature when you’re on the market for a new set of headphones, you’ve not really been spoilt for choice if you favor in-ear buds rather than over-ear cans.
In fact, scan our selection of the best in-ear options, and we’ve only really got the Bose QuietControl 30 to truly recommend, thanks to their wireless nature combined with decent sound quality and fantastic noise-cancellation.
The B&O BeoPlay E4 wired earphones have the luxury of entering a relatively sparse market then, and certainly manage to hold their own. But a few annoying design decisions prevent them from being quite as good as they could be.
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https://www.techradar.com/reviews/bo-beoplay-e4