Now there’s a smarter way to experience high quality sound in privacy and comfort while you’re listening to music or watching TV.
The luxuriously styled MDR-RF4000K digital cordless headphone from Sony offers fabulous digital sound for your favourite AV entertainment. It’s also designed to fit in perfectly with today’s living rooms, thanks to a unique new storage and charging dock that cuts unsightly wires.
Discreetly styled to complement the modern lines of your TV, the slim, convenient storage case doubles as a cable-free battery charger. After use, just fold the ear cups flat and the MDR-RF4000K stows neatly away while the battery recharges.
Digital RF transmission ensures clear, secure signal reception over a range of up to 30m. The headphone’s closed-type design cuts sound spillage, so there’s no need to disturb others while you’re enjoying the action packed finale of a favourite movie.
Exceptional audio quality is assured by the headphone’s powerful 40mm long-stroke diaphragm. You’ll be rewarded with beautifully detailed, immersive reproduction of movie soundtracks and dialogue, music and more.
The closed-type design also features swivel circum-aural cushions and a parallel-link self-adjusting headband for superb wear comfort, even for extended listening periods. Thanks to a convenient volume control on the headphone, there’s no need to reach for the remote to turn sound up or down.
The power-efficient design allows up to 7 hours continuous listening time between charges of the NiMH battery. Alternatively, slip in a single AAA alkaline battery and enjoy up to 10 hours listening without a break. An auto power-save feature switches off the headphone when it’s not being used, extending listening time still further.
Ultimate freedom: MDR-RF810RK cordless headphone
Also available this Spring, the MDR-RF810RK gives you supreme freedom to enjoy your hi-fi or TV in comfort and privacy, anywhere in your home.
Weighing just 220g (approx.), the easy-to-wear cordless headphone can receive analogue RF signals transmitted from the up to 100m away. Like the MDR‑RF4000K, it features a precision 40mm driver for uncompromised sound, plus a convenient volume control for easy level adjustment.
13 hrs listening time on a single charge of the NiMH battery is boosted even further to an incredible 28 hours uninterrupted listening on AAA alkaline battery power.
The new MDR-RF4000K and MDR-RF810RK wireless headphones are available from April 2010.
Specification table
Features | MDR-RF4000K | MDR-RF810RK |
Colours | Black | Black/Silver |
Availability | April 10 | April 10 |
Versions | EU8, CEK | EU8, CEK |
Type | Closed | Closed |
Freq. resp. (Hz) | 12-22,000 | 20-20,000 |
Driver unit | 40mm | 40mm |
Reception range (m) | 30 | 100 |
Output power mW | 10 + 10 | 3+3 |
Battery life (AAA/NiHM) | 7h / 10h | 28h / 13h |
Charging time | 16h | 16h |
Plug type | Connecting cord mini to phono, unimatch plug | Unimatch plug cord stereo to phono |
Volume control | Built-in | Built-in |
Channels | 1 | 2 |
Key features | Swivel flat Charging dock / storage case Stylish design Auto On/Off Circum-aural earcups | |
Accessories | AC power adaptor | AC power adaptor |
Weight (g) | 300 | 220 |
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Sony is a leading global innovator of audio, video, communications and information technology products for both the consumer and professional markets. Sony is renowned for its audio-visual products, such as the BRAVIA™ LCD high-definition television, Cyber-shot™ digital camera, Handycam® camcorder, “α” (pronounced Alpha) digital SLR camera, and Walkman® MP3 player as well as its VAIO™ personal computers and high-definition (HD) professional broadcast equipment, highlighted by the XDCAM® HD. Offering a complete end-to-end HD value chain and with its electronics, music, pictures, game and online businesses, Sony is one of the world’s leading digital entertainment brands, employing approximately 170,000 people worldwide.
Through its long-term football partnerships as an official sponsor of the UEFA Champions League until 2012, Official FIFA Partner until 2014 and global sponsor of the FIFA World Cup™ in 2010 and 2014, Sony is inspiring a sense of excitement for the millions of football fans around the world.
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