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 diaphragms
which reduce unwanted resonances to an absolute
minimum. The HD 558 come with skin caressing ear
pads and headband cushion which provide
outstanding wearing comfort, even for long
listening sessions.