(Open Box) Sennheiser HD 820 Closed-Back Stereo Over-Ear Headphones
(Open Box) Sennheiser - HD 820, Over-ear Circumaural Headphones with 56mm Ring Radiator Transducers
(Open Box)
Closed-Back Stereo Over-Ear Headphones
Sennheiser - HD 820
Please note: This is an open box product, packaging has been opened and demonstrated to a customer, but product is in as-new condition.
'The new audiophile standard'
Sennheiser’s HD 820 are the new standard in closed-back stereo over-ear headphones, delivering highly detailed and precise audio reproduction for audiophiles, mixing and mastering engineers. The closed-back design serves up to 26dB of passive noise cancellation and utilises concave glass covers, which helps limit resonance by reflecting sound to unique and dedicated absorber. The dynamic Ring Radiator transducers offer a max SPL of 103 dB and broad frequency response of 12Hz to 43.8kHz.
Also featured is beautifully handcrafted microfiber ear cushions and a solid metal headband with an internal damper which help contribute to the luxurious comfort and firm stability during long listening sessions. Sennheiser included an impedance-matching cable allows for long distances between you and your chosen headphone amplifier, while the balanced 4.4mm and unbalanced ¼” connectors allow for versatility in connections.
300 ΩImpedance
36Hz – 22kHzFrequency Response
103 dBMax SPL
at a glance
• The new audiophile standard for closed-back headphones
• 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
• Concave Gorilla Glass reflectors deliver impressive spatial sound reproduction
• Ultra-ergonomic adjustable metal headband with inner damping element
• 56mm Ring Radiator dynamic transducer system
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
• 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
Standout Features
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.
Reflecting
withinA closed back headphone able to produce the wide, natural sound field of an open one requires rethinking the directional characteristics of sound waves.
Fellowship of
the RingAn 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.
HD 820 Product Feature - Six Sound Reasons | Sennheiser
The Tech Spec
| Features | Specification | Frequency response (speaker) | 6 Hz - 48,000 Hz |
|---|---|
| Sound pressure level (SPL) | 103 dB (1 V) |
| Impedance | 300 Ω |
| Total harmonic distortion (THD) | < 0.02% (1 kHz, 100 dB) |
| Cable length | 3 m |
| Adapter | XLR-4, balanced, 4-pin Stereo jack plug: 1/4" (6.35 mm), unbalanced, 3-pin 4.4 mm, balanced, 5-pin |
| Transducer principle | dynamic, open |
| Weight | 360 g |
| Ear coupling | circumaural |
| Magnetic field | 10.5 mT |
