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

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.

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

• Customer Ratings	3.93.9 out of 5 stars85
  Sound Quality	4.4
  Comfort	3.9
  Noise Cancellation	3.5
  Value For Money	3.3
  Sold By	BrandsWalk
  Connectivity Tech	Wired
  Headphones Form Factor	around the ear
  Connector Type	6.35mm Jack
  Headphones Jack	6.35 mm Jack
  Cable Feature	Retractable
  Control Type	Noise Control
  Material	Metal,Microfiber

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.

Product information

Item Weight	12.7 ounces
ASIN	B07D41MTT7
Item model number	HD 820
Batteries	1 Lithium Ion batteries required.
Customer Reviews	3.9 3.9 out of 5 stars    85 ratings 3.9 out of 5 stars
Best Sellers Rank	#216,494 in Electronics (See Top 100 in Electronics) #4,541 in Over-Ear Headphones
Is Discontinued By Manufacturer	No
Date First Available	May 16, 2018
Manufacturer	Sennheiser
Item Weight	360 Grams
Units	1.0 Count
Number Of Items	1
Cable Length	4.4 Millimeters

From the manufacturer

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.

 

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

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.

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.

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

1. 

   We are audio experts and music lovers who’ve been striving for the best audio experience. Through the craft and precision of German Engineering we create innovative products to reinvent the future of audio with remarkable audio experiences that you don’t just hear – but feel. That is what the Sennheiser brand has represented for more than 75 years.
2. 

   Intense Science

   We are driven by the passion to create audio solutions that make a difference, by constantly rediscovering the needs of our customers.
3. 

   Intense Sound

   Our ability to redefine sound has continued to set the norm, allowing music lovers worldwide to experience sound in a new dimension.

---

What’s in the box

• HD 820 headphone, 6.35 mm cable, 4.4 mm Pentaconn cable, owners manual

Buy at Amazon on discoun now!