About the DSEE HX function
The DSEE HX function upscales the compressed sound source data such as that on CDs or MP3 to almost as high a quality as that of High-Resolution Audio and reproduces the clear, high-range sound that is often lost.
The DSEE HX function can be set up on the “Sony | Headphones Connect” app, and is only available when connected to the headset via Bluetooth connection.