Bought these at a discount which seemed like a good deal considering you'd assume price equals quality. Nope. worked alright for a while but the least ear stopped working around a month after use and a month after the left, the right is starting to go. Wouldn't recommend unless you're gonna replace them once a month and have the money to.

These cost $90, i bought them because i wanted a high quality noise isolating set of earphones. They hardly isolate background noise e.g. white noise, and the quality of the audio sucks. I wasted my money. I'm going to hope they at least last for the 2 year warranty period.

I gave these to my wife, a person who loves quality audio and she is very pleased with them. At first she was very careful and only ever put them back in the case but now three years later I often see them on the bedroom floor. They have taken lots of punishment and still look good and sound amazing.

Use these as my secondary pair of headphones when I don't want to go out with my over-ears and they make a fantastic substitute. Despite being only a fifth of the price of my over-ears they still stack up pretty neatly against them. Bass has a quick to it and vocals are treated with that warm Sennheiser sound signature.

Great sound quality at a moderate price point. Much better sound than more expensive brands. Choice of different sized ear pieces mean you can achieve a good amount of noise cancelling from external noises. Simple black design looks good - L shaped jack which is good to avoid cord breakage. 2 Year warranty is great piece of mind

These earphones are great at cancelling noise. I use them every time at the gym and they stay in my ear and gives an amazing surround sound system. However the only downside is that once the bud comes off accidentally, it will always keep getting loose so you need to make sure that both buds are there every time you take them out. But overall great sound quality for the amount spent.

The brand used to make great products and they still do however the quality of these products have gone down. This is a replacement for the CX 3.00 however they are not as good.

First, there is no mesh in the earbuds. Not there is a piece of plastic across to keep debris out

A lot more plastics are used

Sound quality gone down

I love using these headphones on a daily basis. Eventhough they are not wireless; the earphones are very good quality and have the best sound at this price point. Furthermore the ear buds are very comfortable and they never fall out of my ear. Would recommend these to anyone that wants good earphones at a fair price

I bought this roughly 2 years ago, was in the market for a decent headset which wouldn't fault on me or randomly stop working.

I knew Sennheiser were a good company for music items. So i decided to search for earphones. I ended up finding this product. Bought it for 79.95.

I have been using it since i got it, the build quality is A++, although I am giving it a 3 star for its earpiece design. The weird angle sometimes does not sit right in my ear and thus partially blocks the sound of the music until I adjust it properly in my ear.

If you dont want the hassle of this, go for another design. I cannot fault the build quality of Sennheiser.

These earphones are great quality. They are noise canceling, so keep that in mind when buying as when they say noise canceling they truly mean it. The sound quality is overall really great. It is supposedly anti-tangle however it does get tangled at times. Overall they are good earphones and I would recommend them.

The Sennheiser CX series has always been the old reliable for me due to their very heavy bass. However, this can sometimes be a bit of a con as the bass is so overpowering that it will dampen the mids.

The anti-tangle cord is a no-brainer from Sennheiser, it was a huge problem on my old Sennheiser CX 300 II's. Even leaving them connected to my computer, they would somehow manage to get tangled. This is no longer the case!

I believe these are so good, that they have even replaced my $400 Bose headphones... Regretfully.

Bought a couple of them over the last few months, not sure if it's me or the product, one of the earpieces kept failing due to rough handling (I'm pretty clumsy). Overall, sound quaility is splendid - awesome bass response but not too overpowering, vocals and midrange cuts through enough such that it's not a blur.

Purchased the second pair with same model because the previous one damaged, it has very deep base after you used for some time, it has very soft material which can isolate some noise physically, the sound quality is nice espicially for base music but i used for every types of music. Also the wire is elliptical so that it will not often be knotted.