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Infrared Wireless Headphones

Model number: MDR-IF240RK
Rated 3.1 out of 5 stars
Get ready to rock with these wireless stereo headphones. Kit includes a transmitter and headphones while offering a lightweight, open-air design.

ADDITIONAL IMAGES:

Go wireless with your music. The MDR-IF240RK wireless stereo headphone system features 30mm drive units for deep bass, up to 60 hours of battery life with an optional alkaline battery or up to 35 hours of battery life with the supplied NiHM rechargeable battery, and a transmission range up to 24 feet. Also utilize the transmission coverage angle-up to 90°. Permitting an easy connection to your home audio system, TV or VCR, these headphones provide a personal entertainment experience you can move to.

What is Infrared?

Infrared transmission works by sending out infrared light signals from the transmitter to the headphones. Infrared signals are resistant to external noise and interference, but the headphones must be within line of sight of the transmitter because the signal can't pass through walls, furniture, or other obstacles.

Design

Light weight so you can wear them comfortably for hours on end and open-air design lets you continue to hear ambient sound.

Supplied Accessories

Includes high-powered transmitter/recharger, headphones, rechargeable battery, connecting cable, UniMatch® plug adapter and AC power adapter.

Features

Mute function, wide headband, automatic headphones power switch and single volume control.

Transmission

24 foot transmission range for listening enjoyment throughout the room and 90° transmission angle (maximum) for uninterrupted listening as you move around the room.

Sound

30 mm diameter drive units for deep bass, low distortion and wider dynamic range. PET diaphragms ensure high rigidity for minimum distortion. Ferrite magnets combine high energy and small size, for ample sound output.

Battery

Rechargeable battery (supplied) automatically recharges when you place the headphones on the supplied transmitter. Up to 100 hours of battery life with optional AA alkaline battery; up to 30 hours life with supplied rechargeable NiCad battery.

Product Specifications

Hardware

  • Communication : Infrared
  • Headphone Type : Open-air, Dynamic

Weights and Measurements

  • Cord Length (Approx.) : 39 3/8 in. (1.0 m) Stereo connecting cable
  • Dimensions (Approx.) : Transmitter: 6 1/8 x 3 1/8 x 4 in. (154 x 78 x 99 mm)
  • Weight (Approx.) : Headphones: Approximately 4.41 oz. (125 grams) Including supplied battery Transmitter: Approximately 4.06 oz. (115 grams)

Audio

  • Audio Modes : Mute: Operates when RF signal is weak or not received 
  • Driver Unit : 30mm
  • Effective Range : Approximately 24 ft (7m); 10 ft (3m) at ±45° line-of-sight
  • Frequency Response : 18 - 22,000Hz
  • Transmitter : Right 2.8MHz, Left 2.3MHz; (Frequency modulation)
  • Volume Control : Yes (Rotary)

Inputs and Outputs

  • Audio In : Analog Phono Input (left/right), Analog Stereo Input mini jack (x1)
  • Phono Input(s) : 1 (Stereo L/R phono plugs)

General

  • Design : Over-the-head, Home-music/movie/games
  • Diaphragm : PET
  • Headband : Wide, Self-adjusting
  • Magnet : Ferrite
  • Power On/Off : Manual Power switch turns headphones ON/OFF. RED LED illuminates
  • Type of Use : Home

Power

  • Battery Charging (Approx) : 16H (to fully charge an empty battery); Battery is charged by placing MDR on TMR
  • Battery Life (Approx) : 60H (with fully charged supplied NiMH battery pack); 28H (with AAA type alkaline battery) 
  • Battery Type : Rechargeable Ni-MH battery pack (supplied); AAA x2 (not supplied)
  • Internal Power Supply : Transmitter: Supplied AC adapter (9V)
  • Power Requirements : Rechargeable nickel-metal hydride battery (supplied) or commercially available (size AAA) alkaline batteries
  • Recharging Time : 24 hours (Approx.)

In the Box

  • Connecting cord
  • Rechargeable NiCad Battery (NC-AA-HJ)
  • UniMatch plug adapter
  • AC adapter

Product Profile

Support

Product Warranty

  • Rechargeable AAA Batteries (4-Pack)

    Rechargeable AAA Batteries (4-Pack)

    $18.00

  • Charger + 2 AA 1000mAh Batteries

    Charger + 2 AA 1000mAh Batteries

    $14.99

  • Rechargeable AAA Batteries (4-Pack)

    Rechargeable AAA Batteries (4-Pack)

    $20.00

  • Charger + 4 AA 2500mAh Batteries

    Charger + 4 AA 2500mAh Batteries

    $24.99

  • Rechargeable AAA Batteries (2-Pack)

    Rechargeable AAA Batteries (2-Pack)

    $9.00

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MDR-IF240RK 3.1 5 15 15
Proper set up These do exactly what I wanted., a way to watch TV late at night when I get home from work without disturbing the household. I had hissing until I figured out how to set them up. Plug them into the earphone jack. This turns off the TV speakers and just leaves the headphones on. Turn the headset volume down and turn the tv volume up loud to 65 or so. Remember the TV speakers are off now. Then adjust the headphone volume to your comfort level. No hissing. If you leave the tv at normal volume setting and try to turn up the headphone volume you will get hissing. July 9, 2012
Just what I needed This is perfect. It's got the volume on the headset itself, and that's pretty convenient, easy to hook up, long battery life, etc. The only downside for me so far is that when I go to use the bathroom and it loses connection with its stand, all you hear is loud static. Drives me crazy. But for its price, I guess that's negligible. December 26, 2011
Great Value I second jhjr4 in that the other reviewers don't understand audio equipment. Turn up your source volume to max (or near it) and then slowly turn up your headset. Be careful not to unplug the headphone jack otherwise you'll wake up the neighborhood with your speakers. They give great sound when setup properly. IR needs line of sight so make sure you can setup them so, otherwise, you'll have poor quality. The headset is comfortable. It doesn't squeeze your head and they are very light. If you move your head rapidly they could fall off. One note, the ear cushions fall off constantly. Once they came off the 1st time I couldn't get them to stay on. Probably could use some glue to tape but still, it's a pain. I actually lost one of the cushions so I am hoping that I can order replacement cushions. Without the cushions, the set is almost un-wearable. All in all for the price, sound, and comfort...a great value. December 14, 2011
Please read this before all negative reviews People that are complaining about hissing and cracking need to learn how to setup stereo equipment before running to their computer and writing negative reviews. Turn up your source audio close to max and then gradually turn up your headset volume.. Easy as that. Plus the freaking headphones are 40 bucks, stop complaining. If you spent 150+ then yeah they better have zero distortion. Just had to backup Sony. Thanks for reading October 16, 2011
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VIEW FOOTNOTES


1. Actual battery life will vary based on product settings, usage patterns, battery and environmental conditions.

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Features and specifications are subject to change without notice. Non-metric weights and measures are approximate.

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