Leaked a full description of the Sony WH-1000XM4 headphones — it was taken from the Walmart website. In many ways, the headphones are almost identical to the previous model WH-1000XM3, but there are also serious improvements. One of them was already mentioned in the rumors, and the description confirmed it: headphones will be able to connect simultaneously to two sources — for example, to a laptop and a smartphone, and instantly switch when you call. During conversations, the voice is picked up by a system of five microphones with advanced postprocessing, which according to Sony, provides better sound transmission.
The technology for improving the sound of compressed audio files DSEE HX, found in Sony devices for many years, has been pumped into these headphones: now it is called DSEE Extreme and uses artificial intelligence to complete the MP3 to the uncompressed version in real time. Adaptive Sound Control profiles have also been added to the headphones: they can remember locations that the user visits regularly and automatically use the sound profiles configured for these locations, as well as adapt the sound for various actions at their own discretion.
Battery life has not increased — the description shows the same 30 hours in noise reduction mode as the WH-1000XM3. Headphones are connected to sources using the LDAC codec. The cups are equipped with 40 mm speakers with liquid crystal polymer diaphragms that can play up to 40 kHz.
The headphones will cost $348 in the US and will be available in black, beige and silver colors. There hasn’t been an official release yet, but it looks like it will happen soon.