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?
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.
Summary: I've had two of these earphones. The sound is good but they don't last. On both sets I've lost sound in one earbud over time. The first set lasted about 8 months but the second set only lasted less than 2 months before the left speaker stopped working.
Summary: I bought two pair of Sony MDRAS40EX headphones at the same time because they were 30% off. There is a reason these headphones have only a 90 day guarantee. They will fail between 4 and 6 months. The first pair's right earbud went out at about 5 months.
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..
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.
It will not last a month if you exercise with this unit
19 March 2011
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.
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.
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.