Overview: The Sennheiser HD 820 is the new benchmark for
closed-back wired headphones. The German-made headphones come with three 3 meter cables, including
two balanced cables
for use with headphone amplifiers. The headphones and cables can be stored in
the elegant, padded wooden box.
Closed Design: The HD 820
circum-aural (over-the-ear) headphones feature a closed
design to isolate ambient noise, but still deliver a wide open sound field. With
the help of the soft, hand-crafted microfiber ear pads, the headphones realize
an attenuation of up to 25dB of outside noise, allowing you to listen to your
music without distraction.
Transducers: The HD 820 utilizes large 56mm (2.2") ring
radiator transducers, some of the largest available in a closed-back headphone.
The drivers ensure ultra-low bass reproduction, as well as clear mids and highs.
Acoustic Diffraction Housing: The Sennheiser HD 820s feature
a patent-pending acoustic diffraction housing to deliver a spatial and airy
sound reproduction, as well as isolate external noise and sound leaking from the
inside. The convex Gorilla Glass panes reflect the sound waves from the rear of
the transducers into an absorber chamber to dampen and eliminate internal
Headphone Cables: The HD 820 comes with three
interchangeable headphone cables, including two with balanced connections. The
silver-clad OFC cables split a short distance from the
headphones, and plug into each ear cup with a special, high precision ODU
circular connector. The unbalanced cable is terminated with a standard,
heavy-duty 1/4" plug. One balanced cable has an XLR-4 connector that offers the best sound
quality when used with the Sennheiser HDVD
800 headphone amplifier. The other balanced cable has the 4.4mm Pentaconn
connector used in newer DACs and headphone amps. All cables feature a nylon outer covering that quiets contact noise from
Storage Box: The HD 820 has a sturdy, hinged wooden box with
cut-out foam padding for storage of your headphones and cables.
- Frequency Response: 12-43,800 Hz (-3dB); 6-48,000 Hz
- Nominal Impedance: 300Ω
- Max. Sound Pressure Level: 103 dB (1 kHz, 1 Vrms)
- Long-term Input Power: max 500 mW
- THD (1kHz / 1V): ±0.02%
- Ear Cup Dimensions: Width 4.328", Height 4.86",
- Weight: 13.4 ounces (w/o cable), 18.1 ounces (with 1/4"
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