Sennheiser HD 820 Closed Audiophile Headphone

HD 820 – The critics said closed headphones could never sound as immersive as their open-aired counterparts. They said physics would never allow it. To that we simply said, “listen”. Developed in Germany, the HD 820 combines an innovative glass reflector and ring radiator transducer technology for a benchmark listening experience as vivid as it is uninterrupted.

The new audiophile standard for closed-back headphones
Ring Radiator transducers
Unique innovative glass transducer covers minimize resonances
Incredible realistic, natural sound field
Robust metal headband with inner damping element
Handcrafted comfortable microfiber earpads
Developed and made in Germany
Silver-cladded OFC cables and gold-plated plugs
Impedance: 300 ohms
Frequency Response: 12 – 43800 Hz (-3 dB), 6 – 48000 Hz (-10 dB)

What’s in the box
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