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SENNHEISER HD 820 Over-the-Ear Audiophile Reference Headphones - Ring Radiator Drivers with Glass Reflector Technology, Sound Isolating Closed Earcups, Includes Balanced Cable, 2-Year Warranty (Black)

3.8 3.8 out of 5 stars 85 ratings

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Brand Sennheiser Consumer Audio
Model Name HD 820
Color Black
Form Factor around the ear
Connectivity Technology Wired

About this item

  • The HD 820 delivers an unparalleled, reference-grade audiophile listening experience in a closed headphone
  • Innovative glass reflectors and frequency absorber systems replicate the wide open characteristics of audiophile speakers in a sealed earcup design
  • 56mm Ring Radiator transducers and Glass Reflectors provide total immersion in your music with absolute detail and a breathtaking soundstage
  • Made in Germany using the finest materials for sound integrity, build quality, and luxurious comfort
  • Connectivity technology: Wired
  • Included components: HD 820 headphone, 6.35 millimeter cable, 4.4 millimeter Pentaconn cable, owners manual
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SENNHEISER HD 820 Over-the-Ear Audiophile Reference Headphones - Ring Radiator Drivers with Glass Reflector Technology, Sound Isolating Closed Earcups, Includes Balanced Cable, 2-Year Warranty (Black)
SENNHEISER HD 820 Over-the-Ear Audiophile Reference Headphones - Ring Radiator Drivers with Glass Reflector Technology, Sound Isolating Closed Earcups, Includes Balanced Cable, 2-Year Warranty (Black)
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Sennheiser HD 820 Over-the-Ear Audiophile Reference Headphones - Ring Radiator Drivers (Black) (Renewed)
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Price$1,599.95$1,499.00-20% $799.00
List:$999.00
-24% $379.00
List:$499.00
-35% $149.95
List:$229.25
-19% $1,297.00
New Price:$1,599.95
Delivery
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
Get it Apr 4 - 5
Customer Ratings
Sound quality
4.4
4.5
4.6
4.6
5.0
Comfort
3.9
4.9
4.0
4.4
4.6
Noise cancellation
3.5
2.5
2.6
2.6
Value for money
3.3
4.3
4.5
Sold By
BrandsWalk
Audio Advisor, Inc.
Zorro Sounds
HIFIMAN
ARF Tech
Electronics Expo (Authorized Dealer)
connectivity tech
Wired
Wired
Wireless
Wired
Wired
Wired
headphones form factor
around the ear
Over Ear
Over Ear
Over Ear
Over Ear
Over Ear
connector type
6.35mm Jack
3.5mm Jack
3.5mm Jack, 6.35mm Jack
3.5mm Jack
1/4-inch, 3.5mm Jack
6.35mm Jack
headphones jack
6.35 mm Jack
1.2mm
3.5 mm Jack
3.5 mm Jack
3.5 mm Jack
6.35 mm Jack
cable feature
Retractable
Retractable
Detachable
Detachable
Detachable
connection cable: ¼” (6.35 mm) stereo jack plug (connected ex works), unbalanced
control type
Noise Control
Media Control
control
Noise Control
material
Metal,Microfiber
Leather, Aluminum
Copper
Plastic
Velour
glass

From the manufacturer

Sennheiser HD 820

Sennheiser HD 820

Developed and manufactured in Germany, the HD 820 is a closed, reference-grade audiophile headphone that a combines an innovative glass reflector and Ring Radiator transducer technology for a benchmark listening experience as vivid as it is uninterrupted.

Sennheiser HD 820

Sennheiser
About Sennheiser

Sennheiser is shaping the Future of Audio – a vision built on a 75-year history of innovation and a continued drive for excellence that is woven into our company’s DNA and culture. Around the world, our employees share this passion in the pursuit of the perfect sound, creating products that exceed expectations and set new benchmarks in audio.

Zero Compromise

The HD 820 fuses Sennheiser's bleeding-edge acoustic capabilities with exceptional reduction of ambient noise. Until now, the audiophile headphone experience could only begin with an open back design or loudspeakers. The HD 820 sacrifices neither detail nor sound field by using breakthrough acoustical systems in a closed, dynamic headphone.

  • Reference-grade audiophile sound quality
  • Closed, noise isolating design for luxuriously private listening
  • Made in Germany from purpose-built materials
  • Ring Radiator transducers for incredible detail and extension
  • Glass Reflector plates with internal absorber system mimic the open sound of loudspeakers

Headphone Profile

Sennheiser HD 820

Sennheiser HD 820

Sennheiser HD 820

Around-the-Ear

Luxuriously soft earpads rest around the ear for long-term comfort.

Closed Earcups

Escape your environment with a sealed design that attenuates the noise around you.

Wired

Comes with (2) cables for connecting to singled ended 1/4-inch (6.3mm) and balanced 4.4mm Pentaconn outputs such as headphone amplifiers, A/V receivers, audio interfaces and more.

Sennheiser HD 820

Reflecting Within

The reference-class experience of the HD 820 is achieved with the use of precision concave glass reflectors, one capping each earcup. These functional plates reflect energy from the rear of the driver to a specially tuned absorber system, allowing the waves to mimic the behavior of open headphones such as the HD 800 S. The result is a sound stage never before experienced in a sealed headphone. The headphone’s vibration damping headband provides complete stability while reducing crosstalk. What you put into the HD 820 is precisely what you will get out of it. Each transducer is manufactured, tested, and measured to an extremely tight tolerance to ensure the most dependable performance out of the box. Each HD 820 also includes the frequency response plot unique to that set’s serial number, sparing no resource to help you retrieve the most critical details from every corner of your music collection.

Sennheiser HD 820

Fellowship of the Ring

The 56mm Ring Radiator transducer found in the HD 820 leverages the key benefit of a large diaphragm speaker—air displacement. Both outer and inner edges of the “ring” are secured to the drive unit to keep it rigid for fast rest and response times. The result is accurate response spanning the entire frequency spectrum.

Let’s take a look at the specifications...

  • Frequency response: 6 – 48,000 Hz
  • Impedance: 300 Ohms
  • THD: <0.02%
  • Sensitivity: 103 dB at 1 kHz, 1V
  • Cable: Detachable, 3 meters (9.8 feet) length
  • Weight without cable: 360 grams (12.6 ounces)
  • Included accessories: 3 meter cable with 6.3mm stereo plug (¼ inch), 3 meter balanced cable with 4.4mm Pentaconn plug, USB manual with frequency response plot, deluxe storage box


From the brand

What's in the box

  • HD 820 headphone, 6.35 mm cable, 4.4 mm Pentaconn cable, owners manual
  • Looking for specific info?

    Product information

    Warranty & Support

    Product Warranty: For warranty information about this product, please click here

    Feedback

    SENNHEISER

    SENNHEISER HD 820 Over-the-Ear Audiophile Reference Headphones - Ring Radiator Drivers with Glass Reflector Technology, Sound Isolating Closed Earcups, Includes Balanced Cable, 2-Year Warranty (Black)


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    Product Description

    The new audiophile standard for closed-back headphones for audiophiles there wasn't any doubt: When it came to circumaural headphones the very best sound required an open back design. This axiom has now been rendered obsolete by the youngest member of the Sennheiser Audiophile Range: The closed dynamic HD 820 employ an innovative technology that makes them sound breathtakingly transparent and natural. Developed and made in Germany they offer an incredibly realistic natural sound field and also stand apart by the extraordinary attention given to every detail of their design. Their soft comfortable microfiber ear pads are hand crafted providing excellent attenuation of ambient noise while the robust metal headband includes an inner damping element. Get ready for an unparalleled listening experience. Into the great wide open vivid wide transparent natural. The sound field of the HD 820 is wide open. Which is not what you would expect at all from closed circumaural headphones. With the HD 820 you can explore and rediscover your music in absolute reference-class quality without intruding on the aural comfort zone of others. Thus the HD 820 not only open up the sound field but also new places and opportunities for you to enjoy your music. The Technology of Transparency The breakthrough transparent performance of the HD 820 has been achieved through a special innovation: Their legendary Sennheiser Ring Radiator transducers are fitted with unique glass covers. Revealing the great look of the technical component within this visually striking feature was actually developed wholly in service to the sound: The concave glass reflects the sound waves from the rear of the transducer to an absorber which results in minimal resonance. Thus the sound waves are effectively gone like they would be in open headphones. An all-star team of excellent components made in Germany the HD 820 stand apart also because of the extraordinary attention that is given to ever.

    Customer reviews

    3.8 out of 5 stars
    3.8 out of 5
    85 global ratings

    Customers say

    Customers like the quality and comfort of the headphones. For example, they mention that it's noise isolating, fantastic and the best closed-back headphone they have tried to date. That said, some complain about the cables. Opinions are mixed on the sound quality.

    AI-generated from the text of customer reviews

    8 customers mention8 positive0 negative

    Customers are satisfied with the quality of the headphones. For example, they mention that they are noise isolating, fantastic, and very good. Some say that the build quality is good and the sound is fantastic. That said, most are happy with their purchase and recommend them to others.

    "...Have worn them on 8 flights. They are noise isolating, and frankly good enough where I can enjoy the music...." Read more

    "...i use both about 50/50 and I use them a lot. very good headphones. I have had k701, bunch of audiotech brand and bunch of sennheiser brand...." Read more

    "...These are by far the best closedback headphone I have tried to date...." Read more

    "...The high, mid, and low frequency range all were quite good and balanced...." Read more

    5 customers mention5 positive0 negative

    Customers like the comfort of the headphones. They mention it's extremely comfortable for long listening sessions, and provides a snug warmth.

    "...the Cayin N8, Ahh...Sennheiser HD820 I am fully satisfied with, the comfort, the build quality and the sound, what more could I want...." Read more

    "...I gave em some time and now they fit like a charm. They are super comfortable I don't get hot spots around my ears or over my head...." Read more

    "They're comfortable but don't create a good seal on your ears and sound closer to open-ear headphones. I use these for producing music...." Read more

    "...The comfort is amazing even surpassing the HD800s renowned comfort...." Read more

    3 customers mention3 positive0 negative

    Customers are satisfied with the closure of the headphones. They mention that it's the best choice for closed back headphones if you are looking for a high-end headphone.

    "Fantastic closed cans. I compared this to the HD800S and was blown away by the openness of the 820...." Read more

    "...Ultimately the best choice for closed back if you are looking for a high-end headphone. Worth the money." Read more

    "Absolutley the best closed back headphones ever made...." Read more

    15 customers mention10 positive5 negative

    Customers are mixed about the sound quality of the headphones. Some mention that the sound is incredible, clear, and provides better than expected sound isolations. They also say it would be the ultimate audiophile choice, with sharp, thumping bass and incredible treble high notes. However, others say that the sounds is very thin and forced, and feels very unnatural. They say the sound leakage is minimal, but can still be heard by those close.

    "...cable, with a shorter length for travel, more durable connectors and best sound. I bought the Accessory House Global 2XL case for travel...." Read more

    "...I am not disappointed. The sound is incredible. Very, very clear. Rich midtones and vocals. Sharp, thumping bass. Incredible treble high notes...." Read more

    "...They are not sound isolating, they are a real privilege" Read more

    "...sticker on them that comes with the pair and there was no audio coming from the right earcup...." Read more

    3 customers mention0 positive3 negative

    Customers are dissatisfied with the cables in the headphones. They mention that the cables are a mess throughout the box, and the XLR-3 cable is missing. Some customers also say that the cable set was not configured as a new unit.

    "...My assumption is these were open box rebranded as new and the cables were swapped out because there's no reason a new and clean cable would be that..." Read more

    "...The product sent to me had been unboxed. The cables were not configured as a new unit. The extra set of cables were not in the product..." Read more

    "It’s used. Only two cables in the box, doesn’t have XLR-3 cable, unbelievable!!Return it immediately." Read more

    TOTL Endgame but source dependent!  Like Tyl, I'm out!
    5 Stars
    TOTL Endgame but source dependent! Like Tyl, I'm out!
    I am semi-retired, but back on the road full-time air travel weekly. For years I have been buying high-end headphones, in the $500-$2800. range. I spend hours reading reviews, analyzing cables and Daps. I use most items a short time, sell them at a loss, and pursue the next great sound. It is important to me travelling 80% of the time, to be able to have my home listening experience on the road, because when I'm travelling, that is my life. So knowing that I have had Sennheiser, Oppo, Focal, Sony, Audeze, Grado & Mr. Speakers to name a few. This is important for you to understand as to why my review is such. There are many variables influencing sound, the quality of the file, the cable, the DAC /AMP, and the actual Headphones. Knowing that, when we look at HP reviews we have to carefully look at those variables, as well as the listeners preferences, to determine how the review applies to you. In my case the music I like is Jazz, Classical, singer /songwriter and Broadway and Movie Soundtracks. Across all of the years, the most fascinating pair of headphones I ever owned was the Sennheiser H800. The soundstage, detail, timber, the note extension, the air were aspects I never experienced with any other headphones. I always went back to the HD800s as a reference sound, to check the tonality of a voice, the depth of strings, the quality of an oboe or flute, the strike of a piano key. The treble could get a little sibilant, and the bass a little lean, but they sparkled. I sold them because they were open, I was seldom home and I seldom listened to them. Recently back on the road, and after purchasing the most high-end DAP /AMP I had ever owned the Cayin N8, I searched again for a good closed back sound. The Sony WMZ 1000v3, Focal Elegia, Mr Speakers C, AKG N90, Sony 1ZR, I was considering the new Focal Stellia. I became aware of the Sennheiser HD820, never knowing they had been released. From the moment I put them on, the reference level sound I remember came back to me. The depth, the sparkle, the range, the timber, taking a semi-sibilant alto vocal, and giving it breadth, neutral and sibilance gone. I know I didn't want the Senns because of the 300 Ohms, and dependence upon an amp, but I have to say, they sing like no other. I've had them about 2 weeks, have about 50 hours on them. I bought a Moon Audio Black Dragon Premium balanced cable, to replace the long stock cable, with a shorter length for travel, more durable connectors and best sound. I bought the Accessory House Global 2XL case for travel. Have worn them on 8 flights. They are noise isolating, and frankly good enough where I can enjoy the music. I'm not really a fan of "electronic" headphones. I have felt, when I retire officially these Sennheiser HD820 and my Sony Z1R are my end game headphones. I've been through everything but electrostats, and these give me awesome reference sound and snuggle warmth with the Sony's. After purchasing I still follow reviews and keep reading the that the Sennheiser are at a High end Treble peaky, and the Sony's are more warm, and maybe something like the Focal Stella and Meize Empyrean are the in the middle, not sibilant, not bassy, but best all arounders. So this morning I'm thinking how can what I hear be so different. How can I think the HD820sare the best all arounders for me. Every HP is a compromise somewhere, but I think the HD 820s are the most enjoyable and perfect. So I did a comparison between the HD820s powered by the Cayin N8 balanced, and my Sony NW zx300. In the quiet of my home I Listened to a high resolution file of DreamBoat Annie, one of my all time favorites, for dynamics, sparkle, bass, mids and treble and soundstage. On the Sony ZX300 the top end sounded thin, in fact a tad sibilant, the whole sound lacked the end game sound I had been hearing. I went to the Cayin N8, Ahh...Sennheiser HD820 I am fully satisfied with, the comfort, the build quality and the sound, what more could I want. So I know there are others out there buy .High-end Headphones, and search for great sound. Sound is subjective, but I have learned a lot from other reviewers, in order to gain a perspective. Get confused by some reviews that raise a product on a pedestal, and others that say the same product is middling. I know this is a long review, without measurements and spectrum comparisons. But I hope it will help others. No single Headphone does it all. but in your private listening room, I am convinced that the Sennheiser deliver everything anyone would ever want, and if stuck on an island or stopping all future purchases with the HD820, you will enjoy them, you will hear detail you never knew was there, transported to another realm, and enjoy the music, taking into consideration all the variables. Using the N8 and quality files, there is no fatiguing highs, and there is plenty of bass, and everything in the middle. This may be my last HP review, thank you amazon for the opportunity to share and help others in the community, enjoy the music, Chip out!* (*reference to guru Tyl Herstens, who I followed for years, and is now downsized and enjoying the world! God Bless on your Journey!)
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    Top reviews from the United States

    Reviewed in the United States on March 23, 2019
    Customer image
    5.0 out of 5 stars TOTL Endgame but source dependent! Like Tyl, I'm out!
    Reviewed in the United States on March 23, 2019
    I am semi-retired, but back on the road full-time air travel weekly. For years I have been buying high-end headphones, in the $500-$2800. range. I spend hours reading reviews, analyzing cables and Daps. I use most items a short time, sell them at a loss, and pursue the next great sound. It is important to me travelling 80% of the time, to be able to have my home listening experience on the road, because when I'm travelling, that is my life. So knowing that I have had Sennheiser, Oppo, Focal, Sony, Audeze, Grado & Mr. Speakers to name a few. This is important for you to understand as to why my review is such. There are many variables influencing sound, the quality of the file, the cable, the DAC /AMP, and the actual Headphones. Knowing that, when we look at HP reviews we have to carefully look at those variables, as well as the listeners preferences, to determine how the review applies to you. In my case the music I like is Jazz, Classical, singer /songwriter and Broadway and Movie Soundtracks. Across all of the years, the most fascinating pair of headphones I ever owned was the Sennheiser H800. The soundstage, detail, timber, the note extension, the air were aspects I never experienced with any other headphones. I always went back to the HD800s as a reference sound, to check the tonality of a voice, the depth of strings, the quality of an oboe or flute, the strike of a piano key. The treble could get a little sibilant, and the bass a little lean, but they sparkled. I sold them because they were open, I was seldom home and I seldom listened to them. Recently back on the road, and after purchasing the most high-end DAP /AMP I had ever owned the Cayin N8, I searched again for a good closed back sound. The Sony WMZ 1000v3, Focal Elegia, Mr Speakers C, AKG N90, Sony 1ZR, I was considering the new Focal Stellia. I became aware of the Sennheiser HD820, never knowing they had been released. From the moment I put them on, the reference level sound I remember came back to me. The depth, the sparkle, the range, the timber, taking a semi-sibilant alto vocal, and giving it breadth, neutral and sibilance gone. I know I didn't want the Senns because of the 300 Ohms, and dependence upon an amp, but I have to say, they sing like no other. I've had them about 2 weeks, have about 50 hours on them. I bought a Moon Audio Black Dragon Premium balanced cable, to replace the long stock cable, with a shorter length for travel, more durable connectors and best sound. I bought the Accessory House Global 2XL case for travel. Have worn them on 8 flights. They are noise isolating, and frankly good enough where I can enjoy the music. I'm not really a fan of "electronic" headphones. I have felt, when I retire officially these Sennheiser HD820 and my Sony Z1R are my end game headphones. I've been through everything but electrostats, and these give me awesome reference sound and snuggle warmth with the Sony's. After purchasing I still follow reviews and keep reading the that the Sennheiser are at a High end Treble peaky, and the Sony's are more warm, and maybe something like the Focal Stella and Meize Empyrean are the in the middle, not sibilant, not bassy, but best all arounders. So this morning I'm thinking how can what I hear be so different. How can I think the HD820s
    are the best all arounders for me. Every HP is a compromise somewhere, but I think the HD 820s are the most enjoyable and perfect. So I did a comparison between the HD820s powered by the Cayin N8 balanced, and my Sony NW zx300. In the quiet of my home I Listened to a high resolution file of DreamBoat Annie, one of my all time favorites, for dynamics, sparkle, bass, mids and treble and soundstage. On the Sony ZX300 the top end sounded thin, in fact a tad sibilant, the whole sound lacked the end game sound I had been hearing. I went to the Cayin N8, Ahh...Sennheiser HD820 I am fully satisfied with, the comfort, the build quality and the sound, what more could I want. So I know there are others out there buy .High-end Headphones, and search for great sound. Sound is subjective, but I have learned a lot from other reviewers, in order to gain a perspective. Get confused by some reviews that raise a product on a pedestal, and others that say the same product is middling. I know this is a long review, without measurements and spectrum comparisons. But I hope it will help others. No single Headphone does it all. but in your private listening room, I am convinced that the Sennheiser deliver everything anyone would ever want, and if stuck on an island or stopping all future purchases with the HD820, you will enjoy them, you will hear detail you never knew was there, transported to another realm, and enjoy the music, taking into consideration all the variables. Using the N8 and quality files, there is no fatiguing highs, and there is plenty of bass, and everything in the middle. This may be my last HP review, thank you amazon for the opportunity to share and help others in the community, enjoy the music, Chip out!* (*reference to guru Tyl Herstens, who I followed for years, and is now downsized and enjoying the world! God Bless on your Journey!)
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    363 people found this helpful
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    Reviewed in the United States on February 12, 2024
    Reviewed in the United States on July 6, 2022
    28 people found this helpful
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    Reviewed in the United States on April 2, 2019
    47 people found this helpful
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    Reviewed in the United States on November 19, 2019
    17 people found this helpful
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    Top reviews from other countries

    Translate all reviews to English
    Cliente Amazon
    1.0 out of 5 stars Terrible
    Reviewed in Mexico on July 21, 2023
    Customer image
    Cliente Amazon
    1.0 out of 5 stars Terrible
    Reviewed in Mexico on July 21, 2023
    Me llega un paquete abierto, con violación de los sellos, caja rota. No se si los usaron, cero confiables. No pague por un producto de este tipo.
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    4 people found this helpful
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    Norton Paratela
    5.0 out of 5 stars Excelente fone, mas as almofadas saem com muita facilidade.
    Reviewed in Brazil on May 18, 2022
    Benjamin
    5.0 out of 5 stars Never felt as many goosebumps with any other headphone
    Reviewed in Canada on December 14, 2020
    2 people found this helpful
    Report
    Alexander
    1.0 out of 5 stars Enttäuschende Leistung des HD 820
    Reviewed in Germany on May 7, 2021
    3 people found this helpful
    Report