Easy on the eye and heavy on the sound, KEF M500 Headphones boast a 40mm neodymium driver for a vast and full high definition range of 20Hz to 20kHz. Incorporating a clever Smart Hinge system with memory foam and lightweight aluminum alloy frame, they mould perfectly to the shape of you head and ear to deliver a crisp and comfortable sound experience with total noise reduction. It's aural pleasure on a whole new level.