Everything in the WF-1000XM4 headphones has been designed from the ground up. Like our new Integrated Processor V1, specially developed by Sony, that cancels more noise than ever, a new driver unit with more performance, noise-sensing microphones, and innovative Noise Isolation Earbud Tips with a more stable fit.The WF-1000XM4 now supports High-Resolution Audio Wireless.3Thanks to specially designed 6 mm drivers they reproduce a dynamic sound despite their small size, and the high-compliance diaphragm reproduces a rich bass range. The Integrated Processor V1 also enhances sound quality and reduces distortion and enables LDAC codec processing and DSEE Extreme.