The Philips Fidelio X3/00 Hi-Res Audio Open Back Headphones are designed with audiophiles and music lovers in mind with their premium feel and full natural tones enhancing all your favourite albums. The X3s are open back offering up a wide natural soundstage with clear highs full-bodied mids and impactful lows that hone in on the details of tracks unlike anything youve heard before. Premium materials and components have been combined to present headphones that are ideal for long listening sessions whether your genre of choice is delicate classical or blistering rock. A detachable cable and headphone adapter also feature making the X3s ideal for integration into any setup with a multitude of devices.