Follow the rhythm of today's modern methods of digesting the latest high definition music with the Cleer High Definition Dual-driver Headphones. The DU contains a high definition dual-driver system with an integrated fine-tuned crossover to render true full-range acoustic reproduction that even satiates the pallete of the most demanding music lovers. Engineered to take advantage of the latest high definition lossless audio formats, FLAC and ALAC, so that you can experience every subtle nuance in your favorite artist's carefully crafted catalog. High Definition Audio With new instant on demand method of listening to their favorite music, more often we utilize digital music in the form of downloads and streaming over the internet. Instead of downloading digitally compressed MP3 music files, the new generation of audiophiles store their music in studio recording quality formats, such as FLAC (Free Lossless Audio Codec) and ALAC (Apple Lossless Audio Codec).