Sony MDR-DS5100

Transmitter
Incorporates Sony VPT Virtual Phones TechnologyTM with advanced level 125MIPS (125 million instructions per second) Logic 3D Processor for richer and more natural "live" sound quality, with "weightier" more substantial bass sounds to enhance the sense of live presence
Built In Dolby DigitalTM, Dolby® Surround, and DTS® Virtual 5.1 Decoders reproduces all popular surround sound systems including state of the art 5.1 channel sound as well as Digital Theater Systems surround sound
Decode-Mode Indicator on Front Panel visually indicates when the system is in Dolby Digital, Dolby Surround, or DTS mode, and provides a stylized representation of the virtual speaker placement relative to the listener, for each mode
Built In Dolby® Pro Logic® Decoder unlocks the Surround Sound tracks often included in VHS Hi-Fi, stereo TV, and other traditional sources to provide the maximum "live" entertainment experience available
Built In Sony Logic 3D Circuitry uses 24 bit DSP (Digital Signal processing) at 125 MIPS (million instructions per second)
Optical Digital Input allows use with Dolby Digital and PCM audio
Gold Plated Analog Input for noise-free Dolby stereo and pure stereo sources
Fifth Order Delta/Sigma A/D Converter uses 64X oversampling for high precision
Multi-Level Delta/Sigma D/A Converter achieves 18 bit resolution
SILMIC Electrolytic Capacitors are provided in the analog stage, for more natural sound
35µm Copper Board Traces are twice as thick as conventional designs, for higher conductivity
Enhanced Headphone Jack with Volume Control can be optimized to take full advantage of the audio characteristics of Sony MDR F-1 full open air-type headphones; jack is easily accessible on the front panel for use with any optional corded stereo headphones
Headphones
Unique Open Air Headphones with open air acoustic circuit provides greater wearing comfort even over extended listening sessions
Cordless Design lets you sit anywhere, even move around (within range of the transmitter) and still enjoy ideal surround sound
High Power Infrared Transmitter has separate FM carriers for wide bandwidth, high channel separation
33 Foot Transmission Range offers full listening enjoyment throughout the room or listening area, and allows you to sit where you are most comfortable while maintaining a sense of live presence
90° Transmission Angle (maximum) further enhances your ability to enjoy uninterrupted surround sound listening without pinning you down to one spot
Oversized 40mm Diameter Drive Units are larger than most headphones, for noticeably deeper bass sounds
Neodymium Magnets pack more magnetic energy per ounce than conventional ferrite, samarium cobalt or aluminum magnets
Long-Stroke 12µm Polyester Film Diaphragms feature low mass for superb transient response; new diaphragm shape resists bending and flexing to provide low distortion
Self-Adjusting Headband conforms precisely to the shape of your head for a comfortable fit even after listening for hours on end
Complete Kit Includes high-powered transmitter, headphones, AC power adaptor, battery charger, Ni-Cad rechargeable batteries, and optical connecting cable Transmitter
Infrared Wavelength 880nm
Infrared Modulation Frequency Modulation
Infrared carrier Frequencies Right 2.8MHz, Left 2.3MHz
Power Requirements AC 120V, 60Hz
Inputs Optical Digital jack (Toslink)
Stereo L/R phono jacks
Effective Range 33 feet (10m)
Frequency Response 20-20000Hz
Distortion 1% or less (1kHz)
Power Requirements DC 9V (from supplied AC power adaptor)
Headphones
Type Open-air, Dynamic, Cordless
Drive Unit 40mm diameter
Diaphragm 12 µm thin polyester film
Magnet Neodymium
Frequency Response 12-24000Hz
Power Requirements Rechargeable Ni-Cad batteries x 2 (supplied) or
AA dry cell batteries x 2 (optional)
Battery Life Approx. 90 hours with optional alkaline batteries
Approx. 30 hours with supplied Ni-Cad batteries