CES 2015: Philips NC1L are battery-free noise-cancelling headphones

That's because they connect via the Apple Lightning port to draw power from your phone or tablet - and to take a digital audio signal in order to take care of the digital-to-analogue conversion inside the earphones.

Yes, the Philips Fidelio NC1L noise-cancelling headphones also have an integrated 24-bit DAC alongside "a full chain of audiophile-grade components" and neodymium drivers.

There are three sound modes: active noise-cancelling, open-ear listening (allows you to hear ambient noise) and natural voice (aimed at making voice calls using the in-line mic).

MORE: Read all our Philips reviews and news

They are the second pair of headphones from Philips to connect via Lightning - following in the footsteps of the M2L headphones, which were the first pair on the market to do so.

Memory foam earpads certainly sound comfortable; the headphones are also "fully foldable", which should make them nice and portable - they're certainly going to prove more portable than carrying a DAC.

The Philips Fidelio NCL1 headphones are due to go on sale this Spring and have a price tag of 299 euros. We will confirm UK details ASAP.

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Joe Cox
Content Director

Joe is Content Director for Specialist Tech at Future and was previously the Global Editor-in-Chief of What Hi-Fi?. He has worked on What Hi-Fi? across print and online for more than 15 years, writing news, reviews and features. He has covered product launch events across the world, from Apple to Technics, Sony and Samsung, reported from CES, the Bristol Show and Munich High End for many years, and provided comment for sites such as the BBC and the Guardian. In his spare time he enjoys playing records and cycling (not at the same time).