Sennheiser HD 820

1.499,00  inkl. MwSt.

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Sennheiser HD 820 | Pleasant and powerful

  • Developed in Germany
  • Features the combination of an innovative glass reflector with the ring radiator transducer technology
  • Uncompromisingly vivid sound experience that sets new standards.


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x1 tablet HD 820 T P Reviesed1 HiFi-Profis

Closed system, without compromise

The HD 820 combines the well-known cutting-edge technology of the sound converterwith an exceptionally high attenuation of ambient noise, which far exceeds all expectations of closed headphones. Until now, Sennheiser has relied on the concept of an open headphone in favor of a maximum sound experience.

This concept, consistently implemented in the design, paved the way for a whole series of high-quality headphones designed for precision. The standard developed here in terms of sound reproduction could even prevail over much larger and more expensive hi-fi systems and also offered the advantage of location independence.

The HD 820 combines equal attention to detail with a focus on unique sound. The result is the consistent implementation of an innovative acoustic system in a closed, dynamic headphone.

Signal transmission in a closed system

A closed headphone that can reproduce the wide, natural sound spectrum of an open headphone requires a rethinking of the directional characteristics of sound waves. Closed systems ensure the best possible intimate sound experience, but inversely proportionally imply the risk of resonance and distortion in the listening channel.

In its class, the HD 820 need not shy away from comparison with its competitors, as it impresses with the use of precisely selecting concave glass reflectors to prevent resonance in both ear cups. The unique glass covers sit on top of the outer ring of the ring radiator baffle.

The concave glass, a visually striking feature, reflects sound waves from the back of the transducer onto an absorber. As a result, these sound waves and resonances, similar to the open headphones of the HD 800 S series, are now reduced to an absolute minimum for the first time in closed headphones.

x1 tablet HD 820 T P Reviesed2 HiFi-Profis
x1 tablet 820 animation T P 1 HiFi-Profis

The decisive effect of the ring

The HD 820’s 56mm ring radiator takes advantage of the serious benefit of a larger transducer – airflow – without sacrificing the required level of resistance with its crucial impact on quiet and response times.

Instead of being attached exclusively to the outer edge of the transducer, both the outer and inner edges of the “ring” are attached to the driver unit. The voice coil causes the diaphragm, which is inserted into a V-shaped recess near the center of the ring, to vibrate.

The chassis of the headphones follows a damping concept to minimize vibrations. In addition, the non-slip headband ensures a secure fit. The result is an unobstructed and incredibly fast as well as precise signal transmission of the entire frequency spectrum.

What counts in the end result are the components integrated into the HD 820. Every single transducer is handmade and tested and inspected until it meets the lowest possible manufacturing tolerances. Only devices with maximum reliable performance leave our factory.

Each HD 820 receives an individual frequency curve and associated serial number according to its proven bandwidth. Thus, you are well equipped to put your entire music collection and individual favorites to the test.

Consistently sophisticated technology

The stereo reproduction with intensified, almost magical sound spectrum is the result of an elaborate technological development concept for the HD 820.

The sound angle of the driver in combination with the response of the ring radiator transducer allows the precise reproduction of voice and instruments in the composition. You are in the middle of life and can escape reality at the same time.

The balance between reality and soundscape allows you to fully concentrate on a unique sound experience while listening to your favorite recordings. The ear padding is extremely comfortable and the shape, which is perfectly adapted to the anatomy of the ear, ensures a tight fit that provides exceptional comfort even during long listening sessions.

There are moments when accurate listening is essential. Especially when the situation calls for it, but also when you just want to listen to music intensively, the HD 820 is the headphone of choice that eliminates distracting outside noise but doesn’t let any sound elements leak out.

x1 mobile HD 820 T P Reviesed3 HiFi-Profis
x1 mobile 820 cable connection revised HiFi-Profis

The connection is the key

Even if you add new components to your music system, your preferred headphones are and will remain the indispensable medium for an individual listening experience. Together with the HD 820 you get different cables that you can use individually according to your preferences.

All cables are impedance matched and feature low structure-borne noise. The 6.3 mm stereo plug acts as a standard connection for headphone amplifiers or DACs and A/V receivers, for example. The 4.4mm connector paves the way to a newer generation of balanced output devices such as headphone amplifiers, digital audio players, and more.

An optional balanced XLR-4 cable is available as a popular connection to a variety of acoustic output devices. Each cable has a length of 3 meters, allowing you to enjoy an unobstructed listening experience whether the output devices have found their place on your shelf, are set up in your studio, or are sitting on your desk.

Product Highlights
  • Audio transmission range: 12 – 43800 Hz (-3 dB) 6 – 48000 Hz (-10 dB)
  • Sound pressure level at 1 kHz 103 dB
  • Around the ear
  • Product type : Headphones with cable
  • Dynamic transducer : Yes
  • Acoustic system : closed
  • Frequency response lower limit (Hz) : 12
  • Frequency response upper limit (Hz) : 43800
  • Impedance (O) : 300
  • max. Sound pressure (dB) : 103
  • Cable length (m) : 3
  • Coupling : circumaural
  • Weight without cable (g) : 360
  • Ear coupling : Around the ear
  • Transducer type : dynamic transducer
  • Construction : closed type
  • Frequency response lower limit (Hz) : 12
  • Frequency response upper limit (Hz) : 43800
  • Impedance (Ohm) : 300
  • max. Sound pressure (dB) : 103
  • Cable feed : Cable feed, both sides
  • Connection cable length (m) : 3
  • Connector : connector, jack 6.3 mm
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