With their special internal Surround Reflector, the HD 558 open,
circumaural headphones are able to generate an extended spatial sound
field, making them ideal for listening to home cinema as well as music.
They are also fitted with Sennheiser’s innovative E.A.R. technology
which ensures accurate channeling of audio signals into your ears, as
well as sophisticated Duofol diaphragms which reduce unwanted resonances
to an absolute minimum. The HD 558 come with skin caressing velour ear
pads and headband cushion which provide outstanding wearing comfort,
even for long listening sessions.