Hi-Fi Award Recommended

HD 820

A benchmark listening experience as vivid as it is uninterrupted.

$1,999.95$1,699.95Plus applicable sales tax – Free shipping

The new audiophile standard

The critics said closed headphones could never sound as immersive as their open-air counterparts. They said physics would never allow it. To that we simply said, “listen”. The HD 820 combines an innovative glass reflector and ring radiator transducer technology for a benchmark listening experience.

hd 820 sennheiser

Completely closed. Outrageously open.

The HD 820 fuses our cutting-edge transducer capabilities with exceptional ambient noise attenuation, transcending the perceived limits of closed headphones. 

sennheiser hd 820 home listening

Reflecting within

A closed back headphone able to produce the wide, natural sound field of an open one requires rethinking the directional characteristics of sound waves.

hd 820 features

Fellowship of the Ring

An achievement in its own right, the 56mm ring radiator found in the HD 820 leverages the key benefit of a large diaphragm transducer—air displacement—without losing the rigidity that favorably impacts rest and response times.


  • The new audiophile standard for closed-back headphones
  • 56mm Ring Radiator dynamic transducer system
  • Concave Gorilla Glass reflectors deliver impressive spatial sound reproduction
  • Acoustic absorber system prevents frequency masking for unheralded detail
  • Ultra-ergonomic adjustable metal headband with inner damping element
  • Luxuriously comfortable microfiber ear and headband padding on key contact points
  • Developed in Germany and precision-built at Sennheiser’s state-of-the-art Ireland plant
  • Impedance: 300 ohms
  • Frequency Response: 6 - 48,000 Hz (-10 dB)
  • Total harmonic distortion: 0.02 % (1 kHz 1 Vrms)
HD 820 details

Exhaustive engineering

The deep, almost magical stereo imaging of the HD 820 is the sum of the exhaustive engineering poured into it.

sennheiser HD 820 specifications

An Ergonomic Treat

The HD 820 delivers on long-term wearing comfort too, providing a listening experience as plush as it is immersive.

HD 820 Ear Cap

It's all about connection

As a centerpiece of your constantly evolving rig, your go-to headphones should offer the versatility to listen on your terms.

hd 820 headphones
  • Reference class open-back audiophile headphones
  • Closed-back earcups
  • 56mm ring radiator transducers
  • German craftsmanship
  • Detachable cable


Frequency response (speaker)
6 Hz - 48,000 Hz
Sound pressure level (SPL)
103 dB (1 V)
300 Ω
Total harmonic distortion (THD)
< 0.02% (1 kHz, 100 dB)

What's included

  • Headphones HD 820 (closed, dynamic headphones)
  • connection cable: ¼” (6.35 mm) stereo jack plug (connected ex works), unbalanced
  • 4.4 mm stereo jack plug, balanced
  • instruction manual
  • storage box
  • microfiber cloth



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