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Sony MDR-RF4000K

alaTest has collected and analyzed 323 reviews of Sony MDR-RF4000K. The average rating for this product is 3.5/5, compared to an average rating of 4.0/5 for other Headphones for all reviews. Reviewers are impressed by the portability and design. The comfort and usability are also appreciated, but there are some critical views about the durability. The reliability and price get mixed views.

sound, usability, comfort, design, portability

durability

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 82/100 = Very good quality.

Review analysis

(Based on 323 reviews)

Expert Reviews  

User Reviews  

Showing 142 review(s)

Expert Reviews User Reviews

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Showing 1 - 132 of 142 Show Reviews: in English | in other languages (181)

Consumer review by: (amazon.co.uk)

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

 

alaTest has collected and analyzed 34 user reviews of Sony MDR-RF4000K from Amazon.co.uk. The average user rating for this product is 4.2/5, compared to an average user rating of 4.0/5 for other Headphones on Amazon.co.uk. Reviewers really like the price and portability. The comfort and usability also get good reviews, whereas reviews about the durability and reliability are different.

sound, usability, comfort, portability, price

88% 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

Feb, 2016

Consumer review by: (amazon.com)

Amazon.com review summary for Sony MDR-RF4000K

 

alaTest has collected and analyzed 88 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. Views about the portability and price are overall positive. The comfort and usability also get good feedback. Many are less positive about the durability and reliability. Comments are divided on the size.

sound, usability, comfort, price, portability

reliability, durability

50% 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

Feb, 2016

Expert review by: Naaptol (naaptol.com)

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...

Jan, 2011

Consumer review by: N/A (newegg.com)

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...

Mar, 2012

Consumer review by: JDHammer67 (tigerdirect.com)

Excellent Sound!!!

 

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

Feb, 2012

Consumer review by: MTHI (sony.com)

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

Dec, 2011

Consumer review by: john (tigerdirect.com)

Like the 970 better

 

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

Nov, 2011

Consumer review by: Doc (tigerdirect.com)

great product unless voume is important

 

I found the maximum volume to be less than what I would like but it is certainly enough to hear tv programs etc. If you like your music loud look elsewhere. I love these cans in all other respects however. A very class product in all other aspects.

May, 2011

Consumer review by: deputycat (dell.com)

Sony wireless headphones

 

Love them, easier to keep charged with the holder.

May, 2011

Consumer review by: Froscher (tigerdirect.com)

Fair Deal

 

I've only had these headphones for a few months but so far I can say I'm satisfied with them. Sound quality is alright. There is a little bit of feedback if the headphone volume is up to high but it can be balanced out. They're a little bulky as seen...

May, 2011

Consumer review by: graficsfx (tigerdirect.com)

Worked great for the 1st 4 months

 

I really loved these headphones when I first got them. The sound is good and they are very comfortable, even after wearing them for 8 hours at work. Into the 4th month of use the headphones started turning themselves off every 5-10 minutes. I can turn...

May, 2011

Consumer review by: rocketman123 (dell.com)

love it

 

Really great sound, much better than I expected. Very comfortable to wear, even for extended lengths of time.

May, 2011
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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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