Whether on the move, at work or at home, the passionate audiophile will always desire to appreciate their music to the full. But with the very best headphones requiring an open back design, there have always been places where audiophile sound can’t travel. Until now.
With a 70-year history of setting performance standards in audiophile sound, Sennheiser has once again redrawn the map with the creation of the HD 820. The new circumaural dynamic stereo headphones shatter expectations of what was thought possible from a closed back model and set a new benchmark in sound quality for this type of design. They are the most transparent-sounding closed headphones in the world.
The HD 820 establishes a new reference standard for its class, with an incredibly realistic and natural sound field. This breakthrough performance has been achieved through a special innovation: Over each of the legendary Sennheiser Ring Radiator transducers are unique glass covers. As well as revealing the acoustics within, these visually striking features were developed wholly in service to the sound: The concave glass serves to reflect the sound waves from the rear of the transducer to an absorber, which results in minimal resonance.
As an audiophile product from Sennheiser, the German-engineered HD 820 stands apart through the extraordinary attention that is given to every detail: From the ear pads, which have been hand-crafted from high quality non-allergic synthetic leather and microfiber to cushion and insulate the listener from ambient noise, to the silver cladded OFC cables and gold-plated plugs, to the robust metal headband with an inner damping element – they offer an unparalleled listening experience.
This ultimate performance is completed by Sennheiser’s new HDV 820 amplifier for dynamic headphones, which is the perfect companion to the new HD 820. With its consistently symmetrical signal processing and extremely low harmonic distortion, it ensures unadulterated and perfect music enjoyment when paired with audiophile headphones. A specially tuned symmetrical, impedance matching cable with low capacitance is included with the HD 820 to guarantee seamless performance from this audiophile duo.
The HD 820 as well as the HDV 820 have connectors according to the new standard for balanced outputs: the Pentaconn connector. This connection has a lower contact resistance than all other connections for headphones producing minimal distortion and a more transparent sound reproduction.
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- Enjoy audiophile sound quality, whether at home or on the move
- New reference for closed back headphones
- Closed, circumaural dynamic stereo headphones
- Natural hearing experience – realistic sound field with minimal resonance
- Glass covered ear cups make the transducer visible. This special design innovation reflects the sound from the transducer to an absorber to minimize distortion.
- Handcrafted ear pads made of high-quality microfiber fabric
- Metal headband with inner damping element
- Specially tuned symmetrical, impedance matching cable with low capacitance
- Balanced 4.4 mm gold plug
- Includes premium wooden storage case and extended instruction manual
- Is ideally partnered with Sennheiser’s new HDV 820 amplifier for dynamic headphones
Transducer principle - Dynamic, closed
Frequency response - 12 - 43,800 Hz (-3 dB), 6 - 48,000 Hz (-10 dB)
Ear coupling - Circum-aural
Frequency characteristic - Diffuse-field equalized
Nominal impedance - 300 Ω
Sound pressure level (at 1 kHz) - 103 dB (1 Vrms)
THD - ≤ 0.02 % (1kHz, 100 dB SPL)
Contact pressure - Approx. 3,4N ± 0.3 N
Weight - Approx. 360g (without connection cable)
Attenuation - up to 25 dB
Connector (depending on connection cable), gold-plated - XLR-4, balanced, 4-pin Stereo jack plug: ¼” (6.35 mm), unbalanced, 3-pin 4.4 mm, balanced, 5-pin
Connection cables - Silver-plated, oxygen-free copper cable (OFC), balanced, shielded, para-aramid reinforced, 3 m