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Sony MDR-RF4000K

alaTest has collected and analyzed 336 reviews of Sony MDR-RF4000K. The average rating for this product is 3.6/5, compared to an average rating of 3.9/5 for other Headphones for all reviews. People are impressed by the design and comfort. The price and usability also get good feedback, whereas many are negative about the reliability.

sound, usability, price, comfort, design

reliability

We analyzed user and expert ratings, product age and more factors. Compared to other Headphones the Sony MDR-RF4000K is awarded an overall alaScore™ of 84/100 = Very good quality.

Review analysis

(Based on 336 reviews)

Expert Reviews  

User Reviews  

Showing 157 review(s)

Expert Reviews User Reviews
Showing 1 - 137 of 157 Show Reviews: in English | in other languages (179)

Consumer review by:

Amazon.co.uk review summary for Sony MDR-RF4000K

 

alaTest has collected and analyzed 37 user reviews of Sony MDR-RF4000K from Amazon.co.uk. The average user rating for this product is 4.3/5, compared to an average user rating of 3.9/5 for other Headphones on Amazon.co.uk. People really like the durability and portability. The comfort and usability are also appreciated. There are some mixed reviews about the price. Some have doubts about the reliability.

sound, usability, comfort, portability, durability

reliability

92% of the reviews on Amazon.co.uk give this product a positive rating.

This summary is based on the products: Sony MDRRF4000K Digital RF Wireless HeadphonesSony MDR RF-4000K wireless headphones

Consumer review by:

Amazon.com review summary for Sony MDR-RF4000K

 

alaTest has collected and analyzed 90 user reviews of Sony MDR-RF4000K from Amazon.com. The average user rating for this product is 3.0/5, compared to an average user rating of 3.9/5 for other Headphones on Amazon.com. People are impressed by the comfort and design. The price and usability also get good feedback. There are some mixed comments about the portability. Many are negative about the durability and reliability.

sound, usability, price, design, comfort

reliability, durability

51% of the reviews on Amazon.com give this product a positive rating.

This summary is based on the products: Sony MDR-RF4000K HeadphoneSony MDR-RF4000K Headphones

Expert review by:

Expert Review

 

These RF headphones have a terrific 40mm drivers to deliver you dynamic range and distortion less rich sound

The wireless headphones interfere with other digital devices like Xbox Live

The MDR-RF4000K is an attractive set of Wireless Digital RF Headphone from the house of Sony that would be a great addition to any audiophile?s home. Also, the device rewards you beautiful detailed, immersive reproduction of movie soundtracks and...

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Consumer review by:

Meh

 

I am trying to reduce wire clutter on my work desk, so these fit the bill, but I'm not terribly impressed with them. Minus 1 star for the mediocre sound, and another for the poor battery life.

Very comfortable, no signal degradation at other side of the house from the transmitter

Sound is *okay*. The bass is a bit weak and muddy compared to the wired v900hd, but that's to be expected from wireless I guess ; The included battery pack has an 8 hour discharge, but takes *15 hours* to recharge. You will need an extra pair of...

Consumer review by:

Excellent Sound!!!

 

Excellent Sound. Easy Hook-up. Just wish the audio cords were longer. Otherwise I'm Very Pleased.

Consumer review by:

Works PERFECTLY with BRAVIA XBR-55HX929

 

Works absolutely perfectly with my high end 3D BRAVIA XBR-55HX929 LED TV. Now I can watch movies into the late hours of the night and not bother anyone sleeping, while not losing a high end sound - I mean, my Sony AV amp will make the house tremble,...

Comfortable","Compact","Durable","Good Bass","Good Value","Great Sound","Lightweight","Stylish

Consumer review by:

POOR BATTERY

 

This high price headphone uses same battery as RF925. Battery becomes useless in under a year. Replacement battery cost $25. Web site says can substitute battery pack with one AAA battery. Pack is two cel and takes two AAA batteries to replace pack....

Good sound

Poor battery life

Consumer review by:

Like the 970 better

 

the sound quality is not as good as the sony 970 model. Price is high for the quality.

Consumer review by:

Good Product

 

Read directions carefully. The cable can be hooked up in two different directions. I just substituted the cable with a RCA cable(red & white plugs on each end). The initial battery charging did take 16 hours.

Comfortable

Consumer review by:

Sony MDR-RF4000K Wireless Headphones

 

I am returning these, they\'re huge. From the photo they looked like they were ear-sized. I\'m sure they work fine, but they\'re almost as big as my head.

Comfortable","Lightweight

They\'re HUGE

Consumer review by:

I would buy this product again and again

 

What I like best is the crisp sound of every word while looking at TV.My wife works at home a few days a week so I decided to purchase a set of headphones as to not disturb her. After looking on-line at every headphone out there, considering the cost...

Comfortable","Good Bass","Good Value","Great Sound","Lightweight","Stylish

Consumer review by:

Great product at a great price

 

I use it to listen to my home stereo while I\'m working out which are in 2 different rooms.

Comfortable","Great Sound","Lightweight

Product Specifications

Configuration

Active Noise Cancellation: No
Dolby PL / AC3: No
Earclip: No
Neckband: No
Noise Cancellation: No

General Features

Ear Canal Headphone:Not Applicable
Indoor/Outdoor :Indoor
Signal Connection:UHF Digital
Type:Traditional Headphone
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