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Sennheiser HD 820

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Brand, Model and Release Date

Information about the brand, model release date.

Manufacturer Sennheiser
Model HD 820
Release Date 2018
HifiSpecs Rating
Amazon Rating

General Specifications

Type, design and features.

Headphone Type Over-ear (circumaural)
Earcup Design Closed-back
Noise Options None
Transducer Technology Dynamic
Microphone No
Connectivity Wired
Cable Length ~3 m
~9.84 ft
~387.5 in
Detachable Cable Yes
Battery Life -
Battery Quick Charge -
Water Protection No
Driver Diameter 56 mm
Inputs 6.35 mm, 4.4 mm, XLR-4 (optional)
Controls -
Foldable No

Technical Specs

Tech specifications of the headphones.

Frequency Response [Hz] 12 - 43800 Hz (-3 dB), 6 - 48000 Hz (-10 dB)
Impedance [Ohms] 300
Maximum Input Power [mW] 0.5
Maximum SPL 103
Distortion -
Driver Diameter 56 mm

Product Dimensions and Weight

Headphone dimensions and weight.

Length ~7.6 in
~193.04 mm
~19.3 cm
Width ~7.6 in
~193.04 mm
~19.3 cm
Height ~4.4 in
~111.76 mm
~11.18 cm
Weight ~0.8 lb
~362.87 g
~0.36 kg

Packaging Info

Package dimensions and weight.

Shipping Length ~13.4 in
~340.36 mm
~34.04 cm
Shipping Width ~11.4 in
~289.56 mm
~28.96 cm
Shipping Height ~5.1 in
~129.54 mm
~12.95 cm
Shipping Weight ~8.38 lb
~3801.1 g
~3.8 kg

Colors and Accessories

List of available colors and optional accessories.

  • Black
Replacable Earpads Yes
What's in the Box
  • Sennheiser HD 820 headphones
  • connection cable: ¼” (6.35 mm) stereo jack plug, unbalanced
  • 4.4 mm stereo jack plug, balanced
  • USB flash drive (SD-U16L version) with instruction manual (as PDF file)
  • Instruction manual
  • Storage box
  • Microfiber cloth

Price and Warranty

Satisfaction is (not) guaranteed.

Warranty 2 Years
Manufacturer URL

Personal Review

"The Sennheiser HD 820 is exceptionally comfortable and lightweight, with a fantastic sound experience. However, with a significant price tag, the headphones' durability issues involving cable failures make them less appealing for some users. While offering some premium features, these headphones may not be the best choice for value-seeking audiophiles."

Bass Response
The Sennheiser HD 820 has a great bass response. It's fuller in the low/mid-low end, resulting in a satisfying thump. Although it's more prominent compared to open-back headphones like HD800s, it copes exceptionally well, giving a pleasing bass output.
Treble Detail
The HD 820 delivers incredible treble detail. The treble highs are sharp and crisp, never coming across as dull or muddy. This ensures an overall vibrant and enthralling auditory experience while avoiding intrusive and harsh 's' or 'sh' sounds.
Midrange Clarity
The midrange and vocals are pronounced, with a rich and vibrant resonance. It doesn't beat the open-back Sennheiser HD800s in terms of midrange clarity, as they have a slight edge yielding an overall smooth, refined and natural renditions.

Related Comparisons

Differences between Sennheiser HD 820 and other speakers

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