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English | HD 820
Features of the HD 820
• Closed-back, dynamic reference headphones
• Circum-aural, wired
• Natural listening experience – realistic and natural sound field with
minimal resonance
• 56 mm ring radiator transducers – unique, innovative dynamic
transducer design
• Closed acoustic diffraction housings with convex glass panes for
outstanding acoustics and a visible transducer architecture
• Absorber technology – unwanted rear sound is directed into
dampened chambers and eliminated
• Specially tuned balanced, impedance matching cables with low
capacitance
• Special high-precision ODU connectors
• Handcrafted ear pads, made of high-quality microfiber fabric
• Metal headband with inner damping element
• Engineered and handcrafted in Germany
• 2-year warranty
2
Comfortable: The sophisticated headband
Advanced: Materials developed in the
design guarantees ultimate wearing
aerospace industry offer minimal weight
comfort for long hours of listening.
and maximal stability.
The acoustic diffraction housing
1
4
Besides the advantage of isolating external noise and leakage from
inside, closed-back headphones offer excellent reproduction of low
tones and bass. Decisive for an as spatial and airy sound reproduction
as possible, however, is an optimal damping behavior which ensures
that, despite profound basses, the mid-range and high frequencies
are not affected negatively.
Reliable: The high-precision ODU
connectors and balanced connections
ensure safe signal transmission.
The HD 820's patent-pending
acoustic diffraction housing
with its convex glass pane made
2
of Gorilla glass ( 1 ) provides
an optimal damping behavior.
The sound waves ( 3 ) produced
3
by the diaphragm ( 2 ) are
reflected by the hard surfaces
of the diffraction housing and
directed in a controlled manner
into the ring-shaped absorber
elements ( 4 ) located around
the transducers.
4
The pressure and speed of the
sound waves are therefore
always controllable and
negative side effects are
avoided. The result is a clear,
interference-free and spatial
sound reproduction over the
entire frequency spectrum, from
about 6 Hz to 48,000 Hz, which
is unequaled in closed-back
headphones.
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