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Main Features
The MDR-DS4000 is a digital surround headphone system using digital infrared
transmission. You can enjoy multi-channel surround sound with headphones by
simply connecting the digital surround processor to a DVD player or a Digital TV, a
Digital Broadcasting Satellite Receiver, etc., with the supplied optical digital
connecting cable.
• Cordless headphones using a digital infrared transmission system which reproduce
uncompressed transmission sound, resistant to external noise and interference.
• Compatibility of MDR-DS4000 with a wide variety of audio formats.
Compatible with Dolby Digital*, Dolby Pro Logic II*, DTS*, and MPEG-2 AAC*
formats. (Proprietary algorithm allows full reproduction of "Dolby Digital Surround
EX" software.)
• Stunning 5.1ch surround sound capability based on newly developed XD
technology.
• Battery is automatically charged by placing the headphones on the processor.
• Built-in audio compression function for easy listening even in the bursting and
whispering sound by compressing the dynamic range.
• Built-in digital through terminal.
Signal to the DIGITAL IN terminal is parallel routed through, for convenient
integration into your existing system with no need to reconfigure your hookup.
• Self-adjusting mechanism headband eliminating the need for adjustment.
• Auto Power On/Off function automatically turns on the headphones when you put
them on, and turns them off when they are removed.
• Uses either rechargeable nickel-metal hydride batteries (supplied) or commercially
available (size AAA) alkaline batteries.
* The digital surround processor for this system incorporates the Dolby Digital decoder,
the Dolby Pro Logic II decoder, the DTS decoder and the MPEG-2 AAC decoder.
Manufactured under licence from Dolby Laboratories and Digital Theater Systems, Inc.
“Dolby,” “Pro Logic,” the “AAC” logo and the double-D symbol are trademarks of Dolby
Laboratories.
“DTS” and “DTS VIRTUAL ” are trademarks of Digital Theater Systems, Inc.
AAC patent marking
Pat. 5,848,391; 5,291,557; 5,451,954; 5 400 433; 5,222,189; 5,357,594; 5 752 225; 5,394,473;
5,583,962; 5,274,740; 5,633,981; 5 297 236; 4,914,701; 5,235,671; 07/640,550; 5,579,430;
08/678,666; 98/03037; 97/02875; 97/02874; 98/03036; 5,227,788; 5,285,498; 5,481,614;
5,592,584; 5,781,888; 08/039,478; 08/211,547; 5,703,999; 08/557,046; 08/894,844
The validity of the CE marking is restricted to only those countries where it is legally enforced,
mainly in the countries EEA (European Economic Area).