In our testing, we got around 32-34 hours with ANC enabled.ĭual-device pairing, improved ANC functionality, and better battery life all add up to really useful additions. If you're looking to push the battery life boundaries, you can turn off ANC for nearly 40 hours of audio playback before you run out of juice. Comfort is still stupidly good to the point where you could wear thm for the full 30 hours, and you won't feel any sort of fatiguing or discomfort. The headphones still charge over USB-C and include super-fast charging with up to 5 hours of listening time with a 10-minute charge. The XM4 still features superb battery life with up to 30 hours on a charge. If you've ever used a set of headphones or earbuds with a similar feature and were frustrated by a lag between removing your headphones and the audio pausing, I can assure you this isn't a problem with the XM4. And when you put them back on, they resume in the same amount of time. When you take the headphones off your head, the audio pauses almost immediately. This feature works surprisingly well and is super accurate. The sensor can be found in the left ear cup and detects if you're wearing your headphones. The last major change Sony made to the XM4 is the addition of a wear sensor. But if your ears didn't fit in the XM3's ear cups, the XM4 may change that. The XM4's ear cups are also slightly larger than the XM3's.
With the improvement, Sony widens the gap with its noise-canceling lead over Bose. Sony says this equates to a 15% increase in ANC performance. They're still amazing at blocking out consistent, low-end hums like engine noise, but the XM4 are now better at blocking out higher-end noise such as fan whir and inconsistent noises like nearby conversations.
XEAR 3D VS DOLBY HEADPHONE UPGRADE
The XM4 also get a minor upgrade to their ANC algorithm.