Sony MDR-IF240RK Wireless Headphone System
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- IR wireless system with 24-foot range and 90 degree maximum transmission angle
- NiCad battery lasts up to 30 hours on a single charge, recharges in 24 hours
- Headphones feature 30mm diameter PET drivers with ferrite magnet for superb sound
- Lightweight (6.3 ounce) phones feature open-air design with wide headband for comfort
- Frequency response: 18Hz - 22,000Hz
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Go wireless with your music. The MDR-IF240RK wireless stereo headphone system features 30mm drive units for deep bass, up to 30 hours of battery life on a single charge, and a transmission range up to 24 feet. Permitting an easy connection to your home audio system, TV or VCR, these headphones provide a personal entertainment experience you can really move to.
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--the signal can't pass through walls, furniture, or other obstacles.
That said, these phones offer a 24-foot transmission range, for listening enjoyment throughout the room, and a 90° transmission angle (maximum) for uninterrupted listening as you move around.
A convenient mute function lets you temporarily suspend audio, and the simple controls include an automatic power switch and single volume control.
Lightweight, Comfortable Design
Wear the MDR-IF240RK phones comfortably for hours on end, thanks to a lightweight construction, wide headband, and open-air design that lets you continue to hear ambient sound.
30 mm diameter drive units deliver serious bass, and a wide dynamic range. PET diaphragms ensure high rigidity, which minimizes distortion, even at higher volume levels. Ferrite magnets combine high energy and small size, for ample sound output without weighing the headphones down.
Great Battery Life
The included NiCad rechargeable battery automatically recharges when you place the headphones on the supplied transmitter. Get up to 30 hours of life on a single charge, or switch to an optional AA alkaline battery for 100 hours.
|Frequency Response:||18Hz - 22,000Hz|
|Effective Range:||24 ft (7m); 10 ft (3m) at +/-45°|
|Infrared Carrier Frequencies:||Right 2.8MHz, Left 2.3MHz; (Frequency Modulation)|
|Power Requirements:||AC 120V, 60Hz|
|Recharging Time:||24 hours (Approximate)|
What's in the Box
MDR-IF240RK Headphones, Transmitter/Recharger, Rechargeable Battery, Connecting Cable, UniMatch Plug Adapter, AC Power Adapter
Product Packaging: Standard Packaging
Top Customer Reviews
I decided to go wireless again and bought the Sony MDR-IF240R after reading reviews. I wanted a headphone that used standard batteries and wouldn't need constant replacing. I have cordless phones and a wireless PC network, so I decided having no interference using infrared was better than having the ability to go room to room using other technology. Since I only used it for TV viewing, I was willing to accept decent, if not great, sound quality. This headphone met all my requirements. I put in one standard AAA battery instead of the rechargeable battery that came with it and I haven't had to change it in over two weeks of constant use (4 hours/day).
The headphones are mostly plastic and look a bit cheap.Read more ›
You can't use them outside the room, and the sound quality is good but not great. Perfect for TV. Even if obstacles partly block the infrared path, the sound continues uninterrupted. The headphones are comfortable and light, and run for many hours before recharging.
I am totally satisfied with the product, and only wish I had ordered something like this years ago!
But I am very happy to have range and field of view limitations in exchange for interference-free reception. Another reviewer complained about an annoying hiss: this only occurs when you turn your TV down low and then crank up the headphone amplification (this is because the transmitter is then sending out such a small signal that the transmission noise is almost as large as the signal). Simply keep your TV volume high and the headphones amplification low and you will not be able to hear any hiss or static. To my untrained ears, they sound as good as corded headphones.
I have already returned 2 sets and have had the same issue with all of them.
If they could get this issue worked out- they would be a wonderful product
Most Recent Customer Reviews
Works good if your close. Don't put in a cabinet or you won't hear anythingPublished 1 month ago by TF
Awesome product, great sound response , mids highs and lows.. Good range on it !!Published 1 month ago by Chetan Chawada
I bought a couple of this IR headphones about 5 years ago. Still works fine. I like the way it can use an ordinary AAA battery as well as the supplied rechargeable battery. Read morePublished 2 months ago by Michael S. Saito