At first glance, the new sony 1000XM4’s look identical to the Sony 1000XM3’s. And you wouldn’t be wrong to think that the 1000XM4’s are just a minor refresh of the 1000XM3’s… but there’s actually a lot more going on here both externally and internally and sony has done a great job of refining their already great premium ANC headphones. So today we’re going to check out the Sony 1000XM4’s but we’re going to compare them to the 1000XM3’s and see if its worth upgrading and we’re also going to be comparing them to the Sony 1000XM2’s so you can see how far these headphones have come.