Sony MDR-DS4000 Infrared Cordless Surround Sound Headphones
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Real 5.1 channel surround sound digital infrared transmission, supporting DD, Dolby Pro Logic II, dts, and MPEG-2 AAC formats. Audio compression boosts dynamics for impressive sound at low levels. Opt... Click To Read More About This Product
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Real 5.1 channel surround sound digital infrared transmission, supporting DD, Dolby Pro Logic II, dts, and MPEG-2 AAC formats. Audio compression boosts dynamics for impressive sound at low levels. Optical output enables connection with optically equipped gear, like AV systems. Just place the headphones on the processor to charge battery. Easy connection with only one cable (optical or audio). Connects to a DVD player, digital TV, digital broadcasting satellite receiver, etc., with the supplied optical and audio cables.
Compatible with a wide variety of audio formats: Dolby Digital, Dolby Pro Logic II, dts, and MPEG-2 AAC
Digital infrared transmission system Uncompressed transmission sound
Resists external noise and interference
Stunning 5.1 surround sound capability based on newly developed XD technology
Battery is automatically charged by placing the headphones on the processor
Audio compression for low-level listening
Output Power : 15mW + 15mW Distortion : Processor- Less than 1% at 1kHz General Headphones: MDR-IF4000 INFRARED Modulation : Frequency modulation- DQPSK INFRARED Carrier Frequencies : Transmitting frequencies- 3.75MHz INFRARED Wavelength : Signal reception distance- 7m forward, 3m at ±45 degrees Type : Closed, dynamic Circumaural design Mute operates when infrared signal is not received Auto power On/Off- Power turns ON when headphones are worn Power ON indicator on headphones Red LED lights up molded band with self-adjusting mechanism for suspenders Rotary volume control Drivers: 40mm diameter, dome type drivers Long-stroke diaphragm Neodymium magnets Frequency response: 10-22,000Hz Power Requirements : Rechargeable supplied Ni-MH batteries x2 Power Requirements : Not supplied alkaline AAA x2 Processor : DP-IF4000 Decoding functions- Dolby† Digital (Max 5.1ch) Decoding functions- Dolby† Prologic II Decoding functions- dts (Max 5.1ch) Processor : Decoding functions- MPEG-2 AAC Processor : Effect mode- OFF Processor : Effect mode- Cinema Effect mode- Music Transmitter FREQUENCY RESPONSE- 12-24,000Hz at 48kHz Sampling Power On/Off Compression On/Off Power Requirements: Supplied AC adapter (9V1100mA) Inputs: Audio input (1 power supply)- Optical Digital Input (square type) x1 Inputs : Audio input (1 power supply)- Analog input (pin jack x2) x1 Outputs : Optical Digital Output (square type)- available x1 Power Battery Life : Supplied NiMH battery- 7 hours with full charge Battery Life : Supplied NiMH battery- 20 min with 1 hour charge Battery Life : Sony alkaline battery- 13H Supplied Accessories: AC adapter (DC9V/600mA) 120V Connecting cord 1.5m, optical cable Rechargable battery NiMH; 550mAh x2 (BP-HP550) Weight: Headphone: 11 oz. Processor: 14 oz (400 g) Approximate dimensions: Processor: 6-3/10"W x 6-3/10"H x 7-7/8D"