You will find the review of Sony MDR-RF4000K wireless headphones on this page, and it must pass a series of tests before having our approval. We want a healthy, easy-to-use product and has some advantageous features that do its job well.
Our experience then will be compared with others found on external sources. If you do not have the time necessary to read the review of Sony MDR-RF4000K wireless headphones in full, you will find a summary in the section ” Conclusions. “
Sony MDR-RF4000K – A Perfect Design
The name of the Sony MDR-RF4000K wireless headphones is still little known, and perhaps because of the particularly high cost, many linger purchase. Overseas, but do not need to go that far. We see that many forums talk about it in completely different ways … lots of very positive feedback, and others completely contrary!
We start, as always, to evaluate the design, where the first thing that strikes us is the elegance of the base, which makes ” furniture ” in most modern homes surely, a feature that not only hit us.
With particular care were also manufactured the Sony MDR-RF4000K and having a weight a little too large, there seem solid and very comfortable! Anyone who claims otherwise perhaps never tried other headphones and has yet to get used to them.
A Base that Serves as Furniture.
Setting up Sony MDR-RF4000K wireless headphones is a very simple but reprimand to Sony that offers instruction manuals and not up to the name … never mind anyway, we just said that there is nothing complicated. We have supplied rechargeable Ni-Mh, the average power as the charge is less than 16 hours for a 7-hour, a relationship that does not convince us that much.
Recharging takes place by inserting headphones into the base, from which you can also monitor the charging status thanks to an LED, a feature that helps to maintain the performance of the autonomy always at good levels. Obviously, with the Sony MDR-RF4000K, you can also use the classic AAA batteries to be purchased separately. With these, we have a few more hours of listening.
Excellent Quality, but …
The sound quality is definitely one of the highlights. The transmission is good, although it is not advisable to leave more than 30 meters. But the difficult to understand, even hot topic on various forums, is to assess whether wireless headphones are worth practicing how high the selling price.
The considerations to be made are two, the first is to judge the use of the TV, good results, but we wonder if it’s really worth spending so much to ” listen ” to a movie … well, you have to be really passionate about. The same goes for the music. The quality is very high, but there are other less-expensive models (but high-end) that offer excellent sound. Finding differences with our examination is really difficult.
Sony MDR-RF4000K – Technical Details
- Dynamic Type YES
- Type of pavilions Circumaural
- Automatic Tuning
- Frequency Response (Hz) 12-22000
- Power ON indicator YES
- ON / OFF function Automatic
- Auto Mute Function
- Long-stroke diaphragm
- Volume Control YES
- Battery type – normal AAA
- Battery type – rechargeable nickel-metal-hydride (NiMH)
- Battery life – normal (h) 10
- Battery life – rechargeable battery (h) 7
- Recharging time – from 0 to full charge (hours) 16
- Weight (g) 300
- Transmission Type RF
- Signal range (m) 30
- Charging stand type Direct
- Automatic battery charging method
- Battery charge indication YES.
- Transmitter frequency band (Hz) 10-24000
- Stereo mini-jack input YES
- Weight (g) 400
- AC Adaptor YES
- Rechargeable battery YES
- Connecting Cables YES
- Dimensions Width (mm) 245 Height (mm) 65 Depth (mm) 128
Sony MDR-RF4000K – Conclusions
The Sony MDR-RF4000K wireless headphones have a model with pretty much everything, headphones dreams, we would say, but looking at the price of these dreams fall to the ground like a house of cards, and doubts arise.
Yes, because no one can think of spending so much to watch TV only for not disturbing your neighbor. Of course, if you are true fans of film effects with the ” C ” uppercase, you want the top, but we think that spending even less is a product of unquestionable quality.
The same thing about the sound of music, you can stay beautiful sprawled on the couch listening to Paul McCartney even breaths while singing his famous ” Hey Jude, “but you have to have a hi-fi quality. In short, Sony MDR-RF4000K wireless headphones are a niche product that we can absolutely recommend, but we think the price is still too high. For you to browse online, it seems the only way right now to curb this obstacle.
Where to Buy Sony MDR-RF4000K Wireless Headphone?
- Digital Wireless Headphones with comfortable charging station for music and movie
- Reversible earcups allow easy handling with the charging station
- Digital transmission in the 2.4 GHz frequency range with high sound quality
Comfort
Design
Sound Quality
PROS : Good Sound, Good Reception, Comfortable, Solid
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