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alaTest has collected and analyzed 221 reviews of Sony MDR-AS40EX. The average rating for this product is 3.2/5, compared to an average rating of 4.0/5 for other Headphones for all reviews. Reviewers really like the design and bass quality. The price and comfort also get good opinions. The portability and reliability get negative opinions.

sound, comfort, price, bass quality, design

reliability, portability

We analyzed user and expert ratings, product age and more factors. Compared to other Headphones the Sony MDR-AS40EX is awarded an overall alaScore™ of 77/100 = Good quality.

Review analysis

(Based on 221 reviews)

Expert Reviews  

User Reviews  

Showing 177 review(s)

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Showing 1 - 63 of 177 Show Reviews: in English | in other languages (44)

Consumer review by: ( review summary for Sony MDR-AS40EX


alaTest has collected and analyzed 31 user reviews of Sony MDR-AS40EX from The average user rating for this product is 2.2/5, compared to an average user rating of 4.0/5 for other Headphones on People really like the bass quality and usability. The size and comfort also get good feedback. Many are negative about the reliability and design, and reviews are divided on the sound.

comfort, size, usability, bass quality

portability, price, design, reliability

39% of the reviews on give this product a positive rating.

This summary is based on the products: Sony MDR-AS40EX Active Series HeadphonesSony MDR-AS40EX Active Series Headphones

Nov, 2015

Consumer review by: ( review summary for Sony MDR-AS40EX


alaTest has collected and analyzed 22 user reviews of Sony MDR-AS40EX from The average user rating for this product is 3.5/5, compared to an average user rating of 3.9/5 for other Headphones on Reviews about the usability and durability are overall positive. The price and comfort are also mentioned favorably, but many are critical about the reliability.

sound, comfort, price, durability, usability


73% of the reviews on give this product a positive rating.

This summary is based on the products: Sony Over the Ear EarbudSony MDR AS40EX - Headphones ( convertible )SONY MDRAS40EX SPORT OVER-THE-EAR EARBUDS

Nov, 2015

Expert review by: Tim Gideon (



Sony's MDR-AS40EX earphones cost a manageable $40 and are perfect for use in the gym or jogging. But their suitability in this regard does not translate into excellent sound performance overall. The MDR-AS40EX lacks tremendous bass; even the $20...

Reasonably priced. Crisp, clean audio delivery. Multiple fit options for secure ear placement. Ideal for the gym.

Lacks deep bass. Over-ear solution is a bit awkward.

The MDR-AS40EX is intended for active (read: gym) use. It lacks deep bass but fits securely and doesn't have much "cable thump."

May, 2008

Consumer review by: krotas (

cord way too short to be useful


I got this product in Japan, in the Sony shop in Ginza.

well, can't really use them

cord way too short to be of any use

Dec, 2012

Consumer review by: Sooner75 (

Love Them but they break


this was my 3rd set. I love them but will not keep buying them. This last set lasted less than 3 months before the sound stopped coming from the right ear piece. None have lasted past 10 months.


right earpiece stops working

Dec, 2012

Consumer review by: 7592 (

Best Headphones I have ever had


I spent about $800 looking for a decent sound quality headphone that would stay on me while running regardless of speed. I finally purchased this pair and I wont look at anything else. They have been washed and dried with my clothes, several times, and...


Extention cord

Oct, 2012

Consumer review by: Wishtheyworked (

Great! long as they're still working


I absolutely love these headphones! The sound is great. They stay in place while I'm running. They are great for connecting to an iPod (with the short cord) or using on a treadmill (with the longer cord). I was SO BUMMED when I went for a run one day...

Sep, 2012

Consumer review by: SteveRino333 (

Excellent product


These were great headphones. Great bass and crisp sound. When sweating heavily while jogging, the sound would sometimes short in one ear, cutting all sound, but I honestly don't complain because they weren't meant to be waterproof.

Great sound, great fit

Sound shorts when very sweaty

Jul, 2012

Consumer review by: aarnie13 (

They'll break


I bought 2 pairs. I used them for walking, so not a whole lot of stress. On both of the sets the right ear quit working. Not what you would expect for a $40 dollar pair of "sport" buds. Oh...Sony will replace them....for $30.00 + applicable...


One ear will fail

May, 2012

Consumer review by: FurrDogg (

Best in ear phones for the price!


I noticed a lot of negative feedback for these, so I HAD to post a review so people reading don't miss out on a great product. I've had them for over a year, and i've put them through running, work outs, mowed lawns, skating (and a lot of falling), and...

Strong, sound, bass, versitile, looks, cord length, price, durability

as any in-ear design, can get a little uncomfy

Apr, 2012

Consumer review by: Krunk (

Take a chance to go to sony store


I ve seen all these reviews and i think the small problem is that you guys are not aware of the one year waranty that comes with the pair of earphones with the bill any sony store will exchange the headphones without any questions and these head phoens...

Jan, 2012

Consumer review by: AnonymousUser (

overpriced garbage


These headphones gave me no end of trouble from the first day i bought them. The first problem was the cord extender does not make a solid contact; this caused the headphones to cut out and have a "static" sound every once in a while. After using the...

ear piece is comfortable for several hours of use

cheap, not made to last

Jan, 2012

Product Specifications

Perfect for fast movement and high-impact workouts, the MDR-AS40EX active style headphones give you the option of using the detachable soft hangers when the going gets rough or just the earbuds for mild activity. Either way, you'll appreciate the crisp sound with rich bass and the moisture guard that wicks sweat away from the speakers. Three earbuds are included (S, M, L) to ensure the most comfortable fit.

Audio Output

Connectivity Technology:Wired
Headphones Form Factor:Convertible
Headphones Type:Binaural
Product Type:Headphones
Response Bandwidth:10 - 23000Hz
Sound Output Mode:Stereo

Audio System

Recommended Use:Portable audio system

Dimensions & Weight



Packaged Quantity:1
Product Line:Sony MDR