HD 820 The new audiophile standard
The critics said closed headphones could never sound as immersive as their open-air counterparts. They said physics would never allow it. To that we simply said, "listen". The HD 820 combines an innovative glass reflector and ring radiator transducer technology for a benchmark listening experience.
- Reference class open-back audiophile headphones
- Closed-back earcups
- 56mm ring radiator transducers
- German craftsmanship
- Detachable cable
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.
Until now, the audiophile headphone experience could only begin with Sennheiser's open back design-a design that paved the way for an entire class of precision listening devices. This standard of sound reproduction would go on to surpass hi-fi systems exponentially larger in size and cost with the understanding that listeners would not be isolated from their surroundings. The HD 820 sacrifices neither detail nor sound field thanks to its innovative acoustical systems in a closed, dynamic headphone.
Exhaustive engineering
The deep, almost magical stereo imaging of the HD 820 is the sum of the exhaustive engineering poured into it.
Developed in Germany and crafted at our state-of-the-art Ireland plant, its fit and finish is second only to its sound quality. When combined with the ring radiator's superlative response, the driver's angle allows you to locate voices, instruments, and their inherent environments. The sound field expertly balances realism and escapism, transporting you to the heart of your favorite recordings and nowhere else. The luxurious ear padding and progressive articulation points form a satisfying seal, eliminating distractions for added focus during extended listening sessions. For critical listening tasks and private listening alike, the HD 820 prevents unwanted sound from coming in or bleeding out.
Features
- The new audiophile standard for closed-back headphones
- Concave Gorilla Glass reflectors deliver impressive spatial sound reproduction
- Ultra-ergonomic adjustable metal headband with inner damping element
- Developed in Germany and precision-built at Sennheiser's state-of-the-art Ireland plant
- Frequency Response: 6 - 48,000 Hz (-10 dB)
- 56mm Ring Radiator dynamic transducer system
- Acoustic absorber system prevents frequency masking for unheralded detail
- Luxuriously comfortable microfiber ear and headband padding on key contact points
- Impedance: 300 ohms
- Total harmonic distortion: 0.02 % (1 kHz 1 Vrms)
Specifications
- 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
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
- instruction manual
- storage box
- microfiber cloth