Summary: Product was great for about 4 months, then the left earbud went out. I called sony support and they had said it was just out of warranty and that I could replace it with a re-conditioned one for $15. I wasnt happy about it failing as soon as the warranty expired but thought $15 is better than spending another $50.
Owned 2 pairs, both lost sound in less than a month
G. Mapes, Amazon
27 February 2012
Summary: I owned 2 pairs of these and both broke in less than a month! The second pair in less than 2 weeks! They both ended up having the sound go out on the left side bud. I wore them to work out/run with. So I did sweat, not sure if that's the problem? However, as they seemed to be geared toward people working out, you would think they could handle sweat to an extent. I have owned the cheaper Sony $10 plastic pair and they always lasted a year at least.
Summary: The configuration of these MDR-AS40EX earphones is excellent. They are comfortable and block out all the annoying noises of everyday life in the city - people talking on cell phones on the bus, extremely loud sirens, car horns, advertising, etc. BUT, when I bought these as replacements, the left channel did not work at all. How Sony can put their name on such cheap slopwork from the factory is beyond me. The new Sony?
Summary: I used these on treadmill runs and while lifting at the gym. they were great in terms of sound quality...for about 4 months. Then one earbud stopped working! Coincidentally, the manufacturer's warranty is only 90 days. BOOOOO! I expected better quality out of Sony...also expected them to stand behind their products for longer than one season! Thumbs down for sure.
Summary: I got these when they were $40. The design seemed like it would be good for running with the ear hooks and the the in-ear headphones tend to sound really good. Great combination, right? Wrong. The worked well until I started to sweat. Once you start to sweat, they slip out of your ears and you are constantly having to push them back in. When they slide out of perfect position in your ear they sound terrible.
Summary: These sony MDR 40ex earphones sound horrible. I bought them for gym use as none of my in ear phone stay in once I start sweating. These will likely stay in place with the adjustable over the ear design, but if you care anything about sound quality you will not be happy with them. Cheap, treble, tinny sounding. There is no full sound or bass whatsoever.
It will not last a month if you exercise with this unit
2 October 2009
Summary: Prons: The ear loop is the only feature of positive merit. It worked well to keep the ear piece in place during moderate exercise. This is the only reason why I give it 1-star. Cons: Model is defective. I've had three units go inoperative in two weeks or less of use. In each case, the right ear piece just stopped working. Silicon ear inserts do not stay sealed during fitness activties, contributing to poor sound quality.
Summary: Pro's - Comfortable fit, short cord works well with MP3 Player on arm-band, extension cord works well, 3 different sizes of ear loops and ear cap covers. Con's - Weak audio quality. In comparison, their quality is lower than Sony's $9.99 ear buds. Too costly for the quality you get. My recommendation; If you're looking for work-out head phones get the Philips Magnavox Secure Fit Earbuds for $6.99.
Summary: Total disappointment. I read that Sony earphones had great sound so I picked up these to replace my lost ipod earphones. They fit in the ear very nice and comfortably but they sound terrible. Absolutely no bass. Very poor dynamic range.