DSEE Extreme is a digital audio enhancement technology developed by Sony. It uses advanced algorithms to restore high-frequency sounds that may be lost in compressed audio formats, such as MP3 or AAC. This technology aims to improve the overall listening experience by making music sound clearer and more detailed. DSEE Extreme analyzes audio in real-time, adjusting the sound quality based on the specific characteristics of the track. It is commonly found in Sony headphones, wireless speakers, and other audio devices, providing users with a richer and more immersive sound experience while enjoying their favorite music.