Summary: These are decent IEMs. One way to describe them is 'exceedingly average'. There's absolutely nothing special about them. Nothing that's so downright bad, but nothing that's really great either.
They don't sound fantastic in any way. The soundstage is a bit too small for me, and the bass is rather pushy.
Maybe one more thing that's worth mentioning is that they're pretty durable.
Summary: Excellent sound quality, can't fault them for that at all! However, about 2 weeks or so with general use day to day, the left headphone, when i was pushing back into my ear, starting popping and is now all muffled and quiet. Quick remedy was take it apart and poke some inner bits which worked but the problem still persists. Not very durable but I might just be unlucky!
Summary: They're ok. Just ok. I'd disagree with both the claims in the description; "Comfortable Ear-canal Phones with Bass Driven Sound". They're not comfortable. The rubber is hard and has no give, meaning they're more like corks than earpieces. As a result, they don't give the tight seal that blocks out external sound, either. So if you're buying to block out the sound of kids on the bus... don't bother.
Summary: I have had these for about a week now. They sound good for the price. Not amazing, just good. They fit nicely and the 3 pairs of buds you get should help everyone who buy them. My concern is they seem fragile. The cable is very thin! I think if they got tugged while walking they could easily break. They also don't come with a bag. I was hoping they did. But, for the price they are worth it. I'd say they're the best in terms of sound I've paid for in this price category.
Good earbuds.... UNTIL you compare them to other sennheiser earbuds, they're definely sub par !
20 February 2014
Summary: Ive owned my CX200s for about a year and have very much enjoyed listening to my music through them. They replaced my original cx300 which finally died on me. At first I thought the sound wasn't as good as my previous pair but since they were sennheiser I thought I must have been wrong. I've used them quite happily until I lost them a few days ago....