Sony MDR-RF4000K Headphone

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Wireless Headphones » Sony MDR-RF4000K Headphone
Sony MDR-RF4000K Headphone
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  1. Electronics: 1 item
  2. Publisher: Sony

Product Review

Unplug and enjoy. The MDR-RF4000K digital wireless headphones system gives you the freedom to travel up to 100 feet from your sound source while delivering phenomenal sound. This system includes Ni-MH rechargeable batteries, 2.4GHz RF digital transmission and headphones with a 40mm driver for deep bass. Includes charger and ultra-long battery life.General Information--Manufacturer--Sony Corporation::General Information--Manufacturer Part Number--MDRRF4000K::General Information--Manufacturer Website Address--sony::General Information--Brand Name--Sony::General Information--Product Model--MDR-RF4000K::General Information--Product Name--MDR-RF4000K Headphone::General Information--Product Type--Headphone::Miscellaneous--Package Contents--MDR-RF4000K Headphone AC Power Adapter Connecting Cable Card warranty Rechargeable Nickel-metal Hydride Battery Unimatch Plug Adapter Operating Instructions Replacement Battery Stand::Warranty--Standard Warranty--90 Day Limited::Technical Information--Connectivity Technology--Wireless::Technical Information--Wireless Technology--RF::Technical Information--Wireless Operating Distance--100 ft::Technical Information--Sound Mode--Stereo::Technical Information--Minimum Frequency Response--10 Hz::Technical Information--Maximum Frequency Response--22 kHz::Technical Information--Plating--Not Applicable::Earpiece--Earpiece Design--Over-the-head::Earpiece--Earpiece Type--Binaural::Earpiece--Driver Size--1.57"::Interfaces/Ports--Host Interface--Not Applicable::Physical Characteristics--Form Factor--Ear-cup::Physical Characteristics--Weight (Approximate)--10.60 oz::

Product Features

Accessories

Customer Reviews

Average Customer Review
3.0 out of 5 stars (47 customer reviews)

23 of 25 people found the following review helpful
5.0 out of 5 stars Amazing headphones, December 16, 2010
Skipster "I'm just saying ..." (Gulf Coast) - See all my reviews
Amazon Verified Purchase(What's this?)
This review is from: Sony MDR-RF4000K Headphone (Electronics)
I ll keep this short simple and straight to the facts . A lil pricey but plenty worth it . flexible connection options with straight forward , simple hook up and operation . Incredible range , much better than advertised or listed ! Incredible sound , easily on par with Sony Studio Monitors only wireless !!! Multi position mountable base that acts as the transmitter with dual indicator LED's for charging and transmitting , self power off when not in use , auto on feature built into the head strap and independant volume control in the left ear hub . Comfortable enough for extended use and light enough to almost forget they're on your melon ! BUY THEM !


24 of 27 people found the following review helpful
5.0 out of 5 stars Headphones, October 8, 2010
David Oldis (LINWOOD, NJ United States) - See all my reviews
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Amazon Verified Purchase(What's this?)
This review is from: Sony MDR-RF4000K Headphone (Electronics)
These headphones replaced a pair of Sennsenheiser headphones that I bought about 3 years ago. So far these are working just fine. I like that they only turn on when you have them on. The sound quality is very good. I also like that once they are fully charged the charging light turns off. At one end of my house i get a little interference that i didn't get with my other headphones. But that is not a major problem. One thing is they could be a little tighter and i don't see any way to adjust that. I would definitely recommend them.


20 of 22 people found the following review helpful
4.0 out of 5 stars 4.5 stars, December 17, 2010
Prime "Prime" (San Jose, CA United States) - See all my reviews
Amazon Verified Purchase(What's this?)
This review is from: Sony MDR-RF4000K Headphone (Electronics)
I needed this because I often watch TV from my kitchen late at night with the family is sleeping. The kitchen is more than 30 ft from my family room and this headphone does the job well; sound is clear (CD quality as advertised) and I do not have any issues with its range. I wear it even to our 2nd floor bathroom (our TV is on the first floor) and I could still hear the sound very clearly (only when I walk to the corner of the 2nd floor, which is a good old 150' from the transmitter, the sound becomes broken, so the range limit is as advertised). The only thing that I wish for is it if has virtual surround, but the other surround wireless headphones that Sony offers only have limited range so this pair is as good as I can get. Oh and the headphone is very comfortable to wear, and I love the wireless charging feature--you simply put the headphone back to the docker and it charges automatically.

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