
Sony's MDR-AS20J Headphones have a sweat-resistant moisture guard design that allows moisture to pass around the headphones so you won't have to worry about sweat damaging your headphones while working out.
| Driver Unit: | 13.5mm diameter, dome type |
| Magnet Type: | Neodymium |
| Frequency Response: | 18Hz - 22,000Hz |
| Impedance: | 16 ohms |
| Sensitivity (db): | 104dB/mW |
| Power Handling Capacity: | 50mW |
| Cord Length: | 2ft |
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288 of 292 people found the following review helpful: By This review is from: Sony MDR-AS20J Active Style Headphones with Soft Loop Hangers - Black (Electronics) I have been in search of a pair of headphones for running for about a year. I have tried primarily earbud style designs. I have not tried in-ear designs because I do not like the sound isolation provided by in-ear. I feel this is a safety issue for running. The earbuds I have tried simply lack bass. Even though the specs of the earbuds I have tried show a frequency response down to 20 Hz, there seems to be a bass roll off.
The MDR-AS20J have very good bass. They have 13.5 mm dome type drivers as opposed to typical 9 mm drivers of earbuds. What also helps with the bass is the clip design. The clip design pushes the bud firmly but gently in the ear which helps with the bass response. Other earbuds slide out slightly which has a dramatic effect on bass. The MDR-AS20J stay in place while running. You literally can just forget about them. They will not budge. The cord is also very light which helps with the bouncing of running. The MDR-AS20J are very...Read more 107 of 108 people found the following review helpful: By This review is from: Sony MDR-AS20J Active Style Headphones with Soft Loop Hangers - Black (Electronics) I have been enjoying the Sony MDR-AS207J headphones since April and have not been happier with a pair of clip-on/in-ear headphones. Earbuds (like those included with most mp3 players) do not stay in my ears, even with the addition of optional size adjusters, especially at the gym, so after several years of purchasing earbuds of every brand and type I resorted to the less comfortable but terrible sounding MDR-J10's until this model came out. The soft rubber is flexible and comfortable, and because it goes completely around the back of the ear, the headphones stay in place. I where mine everyday, going to work or class, and run with them several times a week and they actually stay in place every time, something no other in-ear headphone has done for me. Some other advantages to clip-ons vs earbuds is that these clip-ons do not block out ambient noise, so you will be safe when out and about. They are comfortable, even after several hours, and I have even worn them to bed several...Read more 54 of 57 people found the following review helpful: By This review is from: Sony MDR-AS20J Active Style Headphones with Soft Loop Hangers - Black (Electronics) Like many other picky runners, I have been in search of the "perfect" headphones for quite some time now. The standard iPod ear buds fall out of my ears (as do most other ear buds) and it seems as though every other pair of headphones I tried required constant adjusting while running. That's not the case with these! I wore these during about an hour of cardio (a 30 minute run and 30 minutes on an elliptical trainer) and I never had to adjust them once. They didn't even have that feeling like they're about to fall off. These take some slight mangling to put on my ears, but once they're on, they're staying. I'm no audiophile, but I feel that the sound quality is pretty decent. I've heard better and worse, but for a $20 pair of headphones, I think the sound is pretty darn respectable. The only thing I can nit-pick with these is that the cord is too long, although it comes with a cord clip to resolve this issue. Overall though, I'd HIGHLY recommend...Read more |