HD 820 Over-the-Ear Audiophile Headphones

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.

The HD 820 fuses our cutting-edge transducer capabilities with exceptional ambient noise attenuation, transcending the perceived limits of closed headphones.

A closed back headphone able to produce the wide, natural sound field of an open one requires rethinking the directional characteristics of sound waves.

An 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.

• The HD 820 headphones are the new audiophile standard for closed-back headphones
• Concave Gorilla Glass reflectors deliver impressive spatial sound reproduction
• 56mm Ring Radiator dynamic transducer system
• Acoustic absorber system prevents frequency masking for unheralded detail
• Ultra-ergonomic, adjustable metal headband with inner damping element
• Luxuriously comfortable microfiber ear and headband padding on key contact points
• Develops in Germany and precision built at Sennheiser's state-of-the-art Ireland plant
• Impedance: 300 ohms
• Frequency response: 6-48,000Hz
• Includes:
  • 1/4" Stereo jack cable
  • 4.4mm Stereo jack plug
  • Storage box
  • Microfiber cloth