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Sennheiser HD 820 Closed Dynamic Reference Headphones -16,5%

Manufacturer: Sennheiser

Design: Sennheiser
Weight: Approx. 360 g (w/o lead)

THE groundbreaking, closed, dynamic headphones!
With these groundbreaking closed dynamic headphones passionate music lovers can now enjoy their music at an audiophile level wherever they please, at home or on the move. Featuring unique glass transducer covers that minimize resonances, the HD 820 are simply the most transparent-sounding closed headphones in the world, extending the boundaries of what has been achieved in sound reproduction with closed type headphones up to now.

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.

The new audiophile standard for closed-back headphones
For audiophiles there wasn’t any doubt: When it came to circumaural headphones the very best sound required an open back design. This axiom has now been rendered obsolete by the youngest member of the Sennheiser Audiophile Range: The closed dynamic HD 820 employ an innovative technology that makes them sound breathtakingly transparent and natural. Developed and made in Germany, they offer an incredibly realistic, natural sound field and also stand apart by the extraordinary attention given to every detail of their design. Their soft comfortable microfiber ear pads are hand crafted, providing excellent attenuation of ambient noise, while the robust metal headband includes an inner damping element. Get ready for an unparalleled listening experience.

Into the great wide open
Vivid, wide, transparent, natural. The sound field of the HD 820 is wide open. Which is not what you would expect at all from closed circumaural headphones. With the HD 820 you can explore and rediscover your music in absolute reference-class quality without intruding on the aural comfort zone of others. Thus, the HD 820 not only open up the sound field, but also new places and opportunities for you to enjoy your music.

The technology of transparency
The breakthrough transparent performance of the HD 820 has been achieved through a special innovation: Their legendary Sennheiser Ring Radiator transducers are fitted with unique glass covers. Revealing the great look of the technical component within, this visually striking feature was actually developed wholly in service to the sound: The concave glass reflects the sound waves from the rear of the transducer to an absorber, which results in minimal resonance. Thus, the sound waves are effectively “gone” like they would be in open headphones.

An all-star team of excellent components
Made in Germany, the HD 820 stand apart also because of the extraordinary attention that is given to every detail: From the extra comfortable handcrafted ear pads that insulate the listener from ambient noise, to the silvercladded OFC cables and gold-plated plugs, to the robust metal headband with an inner damping element. This package offers an unparalleled listening experience, which can even be improved by the Sennheiser HDV 820 amplifier for dynamic headphones – the perfect companion to the HD 820.

Audiophile connectivity
Only what gets in can eventually get out. That’s why the HD 820 come with a specially tuned symmetrical, impedance-matching cable with low capacitance and a balanced 4.4 mm gold plug, which offers superior characteristics in contact resistance, and thus in sound.

The look of superior quality
A well-conceived audio component always looks good – inside and out. With their unique glass covers the HD 820 display all the evidence to prove this. They are an aesthetical timeless classic and a natural technical beauty.

Technical data of the Sennheiser HD 820:
Frequency response (Headphones): 12 - 43.800 Hz (-3dB) 6- 48.000 Hz (-10dB)
Transducer principle (headphones): Dynamic, closed
Impedance: 300 Ω
Sound pressure level (SPL): 103 dB (1kHz/1Vrms)
THD @ 1 kHz: Ear pressure: ca. 3.4 N (+/- 0.3 N) approx.
Ear coupling: Circumaural
Weight: 360 g without cable
Jack plug: 6.3 mm / Pentaconn
Cable length: 3 m each

What you get:
- A Sennheiser Headphones HD 820 (closed, dynamic headphones)
- connection cable 1: ¼” (6.35 mm) stereo jack plug (connected ex works), unbalanced
- connection cable 2: 4.4 mm Pentaconn 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
- noble black storage box
- microfiber cloth

This product is 'Made in Germany!'

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