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Sennheiser HD 700 Headphones

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Sennheiser announced the HD 700 fully open dynamic stereo headphones which combine high-end sound with an innovative headphone design.

The ear cups are designed in such a way that the sound waves are directed to the ears at a slight angle. This results in an impressively natural listening experience. The ear cups themselves have a completely open design. This not only ensures a highly transparent sound but also clearly displays the “heart” of these exciting headphones: the 40 mm Duofol transducer. Its powerful neodymium magnet systems guarantee detailed, lifelike audio reproduction from 10 to 42,000 Hz.

“To ensure that the acoustic properties of the headphones are not impaired by any partial vibrations, the transducer is mounted in a high-precision gauze made of stainless steel, as is the case in the HD 800 reference headphones,” explained Axel Grell, Senior Acoustic Engineer at Sennheiser. A new patent-pending feature is the special shape of the gauze, which continues the curved lines of the diaphragm. The resulting curvature reduces the volume of air beneath the diaphragm, thus guaranteeing even more precise control of the diaphragm motion and significantly lowering total harmonic distortion.

A ventilated magnet system produces an air flow in the housing that causes the diaphragm to wobble slightly,” explained Axel Grell. “By positioning precisely defined holes in the housing directly under the magnets, we can cause the air to flow in a specific direction. This minimizes the wobbling motion of the diaphragm.” And the result is impressive: with total harmonic distortion of less than 0.03 percent (at 1 kHz and 105 dB sound pressure level), the HD 700 offers brilliant trebles, precise bass reproduction and a crystal-clear sound. Dips in the bass level are effectively suppressed by the patent-pending multilayer design of the headband.

A sleek shape and the black-and-silver finish give the high-end headphones not only a luxuriously elegant but also a high-tech appearance. The ear cushions made of high-quality microfibre fabric guarantee excellent wearing comfort. “The HD 700 fulfils all the wishes of the most demanding music lovers, both in its visual appearance and its outstanding sound quality,” said Maurice Quarre. “Its warm, balanced and detailed sound turns classical music, jazz, rock or soul into a fascinating listening experience.”

Price and Availability
The Sennheiser HD 700 headphones will be available March 2012 for $999.95.

Specifications

Transducer principle: dynamic, open
Ear coupling: circumaural
Frequency response: 10 – 42,000 Hz
Nominal impedance: 150 ohms
Sound pressure level (SPL): 105 dB (1 kHz, 1 V)
Total harmonic distortion (THD): < 0.03 % (1 kHz, 1 V)
Jack plug: straight 1/4″(6.3 mm) stereo
Weight without cable: approx. 273 g
Cable length: 3 m

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