SennheiserCX 300S Ear-Canal Headphones with Universal Smart Remote - Black, 508593

Note 1: This is only the 2nd pair of ear-canal headphones I have used. Note 2: I have bought these for music listening purposes only.Pros: They are lightweight, comfortable and come very well packed. They have good length of cord and provide very good sound from: cassette player, Android Phone and mp3 player (Boom!). Was very impressed. There are numerous ear tips supplied but I found Aiivioll Silicone Ear Tips give more bass and fitted my ears better. I found also that you do not need high volume as they have high sensitivity. This means the battery driven or rechargeable devices should be able to play for longer.Cons. Wire noise can be experienced when cable banged/tapped due to high sensitivity.

Like many of sennheiser's headphones they are no frills, well designed and built.Cable is lot thicker and durable than any other in-ear I've used so far, but would like if it less microphonic.Really comfy and light in ears with a surprisingly secure fitSound quality wise they are quite competent.I need to use the extra large tips to bring down the bass or they are just too muddy and dull sounding.The driver is quite dynamic sounding and very smooth across the band, lacks some air but the detailed midrange makes up for it.Foam in the nozzle is removable and gives some more tunability. slightly brighter and airy without it, but less smooth.

I've been using these for a few months now, very pleased with them.Pros:- Good noise isolation, fits the ear well and doesn't let noise through.- Comes with a handy little pouch I've used every day - keeps them safe and untangledCons:- Slightly disappointed there is no volume control, only stop/start button.- One of the earphones has a slightly bad contact, pulling on the cord a little makes the music go quiet.

Very impressed, comfortable to wear only issue I had was initially they kept falling out but that seemed to sort itself out.Quality was excellent

The left earphone stopped working after 3.5 months. This is not the first time this has happened with this model of earphone.Do not buy them or if you do, come back and do a review after six months, not straight away. I'm guessing most of them fail within 6 months.

I'm gonna have to find another brand than Sennheiser I like. Their products are just... now built to last. This is the third pair of CX-branded earbuds I've bought and none have lasted beyond two years. After a few months, the ends of cables turn to literal mush - apparently readily dissolving on light exposure to skin oils or body heat. A few months later, one of the earbuds will stop working and that'll be it. Unfortunately, this new design with titled earpieces is just both less comfortable and a worse fit. There are far more sharp uncomfortable edges in contact with my ear, and they pull out incredibly easily while also feeling like they're fitted in too deeply. Even a slight motion of the stiff cable will pull them loose, or they'll just pop out on their own while I'm completely stationary. The CX100 already had a stiffer cable than the pair before that and those I could tug on and not pull them loose, these however don't want to stay in even when jammed in uncomfortably. The larger earplug size is also just plain uncomfortable, while the default appears too small in comparison to the CX100's perfect fit. They're not interchangeable earplugs though, so I can't simply swap them over. Sound quality is fine, too bass heavy (I've no idea what the commenter complaining about there being too little is going on about), but that's something that I can adjust to and maybe something that'd lessen over time. But even having them a couple of days they're simply not comfortable, and I'm already aware they're not built to last. Even with an even thicker cable yet, I'm aware in a few months it'll turn soft and peel off, and then a few months later I'll lose sound on one side. That's just a constant of their construction quality. The thicker cable (and volume control) also doesn't let you loop it around your ear, which often helped with a secure fit or to get rid of cable noises. So that's off the table too.This is a real disappointment across the board. I already resent paying for a new pair every two years because of their material choice, but taking a product that fits perfectly and making it atrociously uncomfortable as well as just more expensive? It's just a regression.

Unfortunately they don't make Sennheisers Momentum 2 earphones anymore so replacing with these cheaper ones. Compared to mid or high range Sennheiser the bass is boomy and over emphasised but for casual listening it's a lot better than not having enough. Microphone works perfectly. Controls on the wire are limited to only play/pause rather than also volume control.Overall for the price these are a great buy. Just a shame they no longer offer a mid range for a more refined sound but as I said, the sound is at least full and satisfying to the casual listener.

After God knows how long ago I purchased this... it still hasnt broken. It was good for its price, its always been with me on my journeys to work. The sound is good but not great. The only down side is the replacement ear cushions. Kept on losing them then I got the replacements as back ups.