HD 820 Closed Dynamic Headphones

Headphones by Sennheiser
Sennheiser HD 820 Closed Dynamic Headphones - Grahams Hi-Fi
Sennheiser HD 820 Closed Dynamic Headphones - Grahams Hi-Fi
Sennheiser HD 820 Closed Dynamic Headphones - Grahams Hi-Fi
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Sennheiser HD 820 Closed Dynamic Headphones - Grahams Hi-Fi
Sennheiser HD 820 Closed Dynamic Headphones - Grahams Hi-Fi
Sennheiser HD 820 Closed Dynamic Headphones - Grahams Hi-Fi

£1,999.00

HD 820 Closed Dynamic Headphones

  • Reference closed back headphones
  • Open headphone performance from a closed back design
  • Minimal distortion achieved with absorbtion
  • Circumaural fitting
  • Tuned and impedance matched cable
  • Includes wooden storage case

Whether on the move, at work or at home, those passionate about music will always desire to appreciate music without compromise. Historically the very best headphones are open back in design, noisy to those around you, without impeding the surrounding hubbub, music is simply impossible to enjoy... until now.

With a 70-year history of setting performance standards, Sennheiser has redrawn the map with the creation of the HD 820. These circumaural dynamic stereo headphones redefine what is possible from a closed back headphone and set a new benchmark for this type of design.

The HD 820 offers an incredibly realistic and natural sound field. This has been achieved through innovation: Over each of the ring radiator transducers are unique glass covers. As well as revealing the acoustics within, these visually striking features were developed wholly in service to the sound. The concave glass serves to reflect sound from the rear of the transducer to an absorber, which results in minimal resonance.

As is typical for a Sennheiser product, the HD 820 stands apart through the extraordinary attention that is given to detail; from the ear pads, hand-crafted from high quality non-allergic synthetic leather, and microfiber cushions which insulate the listener from ambient noise, to the silver cladded OFC cables and gold-plated plugs, to the robust metal headband with an inner damping element – they offer an unparalleled listening experience.

A specially tuned symmetrical, impedance matching cable with low capacitance is included with the HD 820 to guarantee seamless performance.

These truely special headphones should be on any shortlist for no-compromise headphones, no matter where you intend to use them. 

Grahams recommend you partner this amplifier with:

Please contact us to arrange a demonstration.

Technical Specification:

What's in the box?
  • Headphones HD 820 (closed, dynamic headphones)
  • connection cable: ¼” (6.35 mm) stereo jack plug (connected ex works), unbalanced
  • 4.4 mm Pentaconn stereo jack plug, balanced
  • XLR-4 connector, balanced
  • USB flash drive (SD-U16L version) with instruction manual (as PDF file) and individually diffuse-field frequency response curve
  • instruction manual
  • storage box
  • microfiber cloth
Wearing style Headband 
Ear Coupling Circumaural
Impedance 300 Ω 
Audio-XLR connector XLR4 
Frequency response 12 - 43800 Hz (-3 dB)
>6 - 48000 Hz (-10 dB)
Sound Pressure Level (SPL) 103 dB at 1 kHz, 1V
Contact pressure ~ 3,4 N (± 0,3 N) 
Jack plugs ¼” (6.35 mm) stereo jack plug (connected ex works), unbalanced
4.4 mm Pentaconn stereo jack plug, balanced
XLR-4 connector, balanced
Cable length 3m 
Transducer principle Dynamic Closed
Weight w/o cable 360 g