These high-end Sennheiser HD 555 Headphones feature a clever internal surround reflector to generate an extended, spatial sound field, making them great for home cinema as well as music.
The Sennheiser HD555 Headphones include a number of sophisticated technologies, enabling them to deliver superior audio quality. They feature an innovative "Eargonomic Acoustic Refinement" (E.A.R.) design, which channels the audio signal directly into your ears. Their Advanced Duofol diaphragm technology almost eliminates standing waves inside the capsule.
The Sennheiser HD 555 Headphones are also exceptionally comfortable to wear, thanks to their lightweight aluminium voice coils (which also offer high efficiency and excellent dynamics) and velour ear pads.
**Thanks to martinwakelin for the headsup in the Sennheiser HD 407 Open Headphones Thread**
I guess because the price ends in .97 that these are most likely a clearance item and MAY be available at Dixons too.