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- Closed-Back Design Minimizes Resonance
- Dynamic Ring Radiator Transducers
- 12 Hz to 43.8 kHz Frequency Response
- Up to 26 dB of Noise Cancellation
The Sennheiser HD 820 are closed-back stereo over-ear headphones offering detailed and accurate audio reproduction for audiophiles, mixing and mastering engineers, and music aficionados in studios, listening rooms, and on the go. Their closed-back design delivers up to 26 dB of passive noise cancellation and incorporates concave glass covers, which reduce resonance by reflecting sound to a dedicated absorber. Sennheiser's dynamic Ring Radiator transducers provide a maximum SPL of 103 dB and a wide frequency response of 12 Hz to 43.8 kHz. Handcrafted microfiber ear cushions and a sturdy metal headband with an internal damper offer comfort and stability during wearing. A 10' impedance-matching cable allows distance between you and your headphone amplifier, while balanced 4.4mm and unbalanced 1/4" plugs enable versatile connectivity. The HD 820 headphones ship with a microfiber cloth and a storage box for simplified transport.