Product Reviews for Sony MDR-AS40EX Stereo Earphone

By Whitnay from Birmingham, AL on 9/15/2011

I have had these headphones for a little over a year now, and haven't had the first problem with them. My ears are oddly shaped, so I normally can't use in-ear buds unless they have over-ear hangers. I also wanted some that I could use while working out. These are perfect for working out because they're waterproof and pretty much stay put. They tend to slide out of my ear when I'm talking, but all ear buds do, so I can't complain about that. But the interchangeable sizes make them stay put much better than others I've tried.The sound is great for such inexpensive headphones. I've seen some reviews here that say the sound isn't great, but I'm a minor in audio engineering and often use these to evaluate my music while I'm on the go. Of course they're not up to the same quality as the more pricey Sony headphones, but they are exceptional for ear buds. And I've recommended them to some classmates who don't have the funds to go out and buy really nice headphones. I give them two thumbs up.

By FluffyG from Berkeley, CA on 5/6/2011

These headphones are great for working out. This is my second pair (I accidentally put the first pair through the laundry and they didn't survive the dryer). I misplaced them for awhile and had to try a few other types - none of which compared. I finally found them this morning and felt compelled to write a review.

By lifesgood from Boston, MA on 8/13/2010

I wasnt sure what to expect with the range of reviews I read, but right out of the box I was very pleased! Once I switched the earbud size the fit perfectly and do not move! Ive run, jumped, spun, and even shook my head as much as possible to see if they fall out and they dont budge! fI havent had it long so Im not too sure about reliability but it seems well constructed to me. Sound quality is pretty good too with plenty of bass. Only downside is for the price its just about the same sound quality as the headphones that come with the iPod, but it definitely does it's job as a sports headphone.

By SoundGuy64 from Colorado on 3/10/2010

I have two pairs and my wife has one, three pairs NO problems after over a year with the first pair. Well, actually the right ear went out in my first pair and after inspecting the phones I found that wax had built up in the channel which caused the issue. Clean them and that will probably fix the issues listed here. What is great about these headphones is they stay in place comfortably because of the hooks. I use them running, lifting, snowboarding and mountain bike riding (please don't use them on the road that is too dangerous). I have used them for HOURs at a time w/o any problems biking. The sound is great ( I own a 7 speaker Infinity surround system with 130 watts per channel and I know good highs and lows). if you are like me and hate the little buds that fall out of your ears when doing anything active, you will love these headphones. I sweat a lot and have never had an issue with performance when very active outdoors in 90 degree heat. The issues I have are minor. One the connection between the two cords can pop loose if you put any pull on them. This is typical if used for lifting or especially doing situps ;) In a few cases though it has been helpful - like during mountain bike crashes. The trick I use during gym work outs is to use two shirts and let the cord hang between them as this seems to reduce the issue. The second issue which is even less important to me is the case. For the cord to wrap up in it well I have found that I need to remove the alligator clip. I just don't use it. Instead, I have found that to reduce tangling of these phones, I slide the chin tightener up to the top and fold the cord up in half a few times and tuck in the shuffle clip. Comes out untangled every time. BTW, the short cord option is great if you have an MP3 player that clips to your camelbak. Works like a charm with no "cord" issues.

By Anonymous from Colorado on 3/10/2010

I have two pairs and my wife has one, three pairs NO problems after over a year with the first pair. Well, actually the right ear went out in my first pair and after inspecting the phones I found that wax had built up in the channel which caused the issue. Clean them and that will probably fix the issues listed here. What is great about these headphones is they stay in place comfortably because of the hooks. I use them running, lifting, snowboarding and mountain bike riding (please don't use them on the road that is too dangerous). I have used them for HOURs at a time w/o any problems biking.