CX 300S In Ear Headphone with One-Button Smart Remote - Black

After a bad outing with the Sennheiser CX 100 (they lasted 10 days before the left earbud died), I decided to try the CX 300S due to its perceived improved build quality. I've had them since April 20th, and so far, so good. The cable is thicker and the 1/8th inch plug is reinforced much more sturdily than the CX 100. These earbuds are *extremely* comfortable. You can sleep in them and you don't even notice them in your ears. Sound isolation is very good, much better than CX 100. When working out at the gym, external noise is cancelled. The bass is also much improved over the CX 100. However, I find that the mids are a touch cleaner with better soundstage on the CX 100. But overall, the CX 300S provides a more exciting listening experience, especially if you're a basshead. I'm really hoping these last. Best earbuds I've ever owned. Worth the price and the sound quality is just on another level entirely compared to the earbuds you get with phones. UPDATE: Best headphones I've yet owned. A few months in, no issues, even after being run over by a car. It doesn't feel like you're wearing them, noise cancelling is acceptable, sound quality fantastic. Only issue is the inline mic is weak at recording field sounds (it's okay for calls) and the jack comes out easy, which I'm assuming was designed this way to prolong the life of the connection at the jack point. I LOVE these. I would buy another in a second. And Sennheiser has a fan for life.

Well, I have been a Sennheiser customer since years ago, and this are no exception to their sound quality and great product reputation. I currently own the HD 4.40BT. Very well built, compact earbuds structure yet sturdy. Flat cables are practical and, even though there is no volume control, the remote for play/pause, next/previous, forward/rewind is functional, and I usually keep my devices at a specific volume level anyway. For those saying that they have no stereo sound or the bass is poor, please make sure you are using the correct earbud tip size for you. The box comes with several tips to fit your ears and make sure it makes the right sealing, so you can have the best sound quality, that is how earbuds work. And in terms of noise canceling they do good work damping external noise without keeping you unaware of the surroundings. BTW, when you use the right earbud tip, there is no issue with noises made by the cables when knocking or rub against the clothing or something like that. The mic has good gain with very clear voice recording. And another good thing is the storage pouch made of syn-leather to keep them safe when not in use. With that said, I do recommend them, I use them when not needing to be wireless or when I don't want to work with BT configurations in video call apps. I did not expected less from Sennheiser.

Typical to CX300 I owned in the past, these buds are quite comfortable (small form factor) and sound good. Let's you indulge in sounds across the frequency range - which means lesser bass than your bass heavy earbuds. Passive noise isolation is below par though even after trying out different tip sizes. Hence I wouldn't classify them as the best commute earbuds given the bass is also not enhanced which would otherwise help in noisy environments. Good earbud for enjoying music and videos in quieter environments though.

These are the BEST wired earbuds under $100 I have EVER used. These have been my road warrior with me on many business trips already. I have a nontraditional Android phone that still has a 3.5mm Jack, and I prefer that over opening up Bluetooth at airports any day. It's always reliable since you don't need to charge anything, the sound is intense, full of bass, and maintains three quality even when it is set to a loud volume. The rest cusions are easy to swap, but hold in extremely well. I LOVE(D) these earbuds... however, I just got back from a trip to Alexandria outside of Washington DC and my pair was stolen from me. I suppose others out there knew how great these were and jumped on the chance to steal them. In any case, there was ZERO hesitation purchasingb replacement earbuds. If you're like me, and have to have complete control of your components, preferring wired headsets, I would HIGHLY recommend these earbuds!

For me, the sound is disappointing. Not a very full or rich sound

Really high quality sound. I always bought inexpensive earbuds at the supermarket for $10, or even $5. I have never had some real quality earbuds like this. I had a great Sennheiser shotgun mike for my professional video camera years ago, and the sound from that was excellent. That is why I really know the name Sennheiser. So I thought I would "splurge" and get something better than I have been used to. Music is a whole new thing with these headphones, and I think the extra money is well worth it. They really do make a difference. Even for just watching TV, like CNN, the voices are so much sharper that you don't have to wonder if you heard something correctly or not. So best for music, but really nice for plain old TV as well. Yes they are 5X more than any earbuds I have purchased for my personal use in a long time, but now that I have them, I think they are worth the price. They seem more substantial too. Hopefully they will last quite a while. I'll try not to sit on them so much! I think that is a big part of what ruins them. It pulls the wires loose way sooner than necessary. Now I have extra incentive to try and keep these intact. You don't want to quickly destroy $50 headphones! $5 ones OK. These, I want to keep good as long as possible. Jim W.

I got response from sennheiser hearing that there is no such serial number in their database

the sound in the right ear goes fuzzy & static and hurts my ear as it is a piercing sound, i thought it was something i did with crossing wires or fault on my devices, but it happens on every device. after inspecting the wires i can see the wire looks bent/crimped leading up to the right ear bud. when they were packaged the wires were rolled/folded and might have been damaged in this process.

It broke just after five weeks, first left then right earphone! I will return it immediately but its not possible because of return policies!!!

Al principio no me había convencido ya que usaba unos Sony Mdrex110ap y no quería dar ese salto de 300 a 800 pesos, pero al final me dicidí e hice el cambio, si bien los graves no suenan tanto como en los Sony, está bien, por qué es un sonido muy equilibrado y se compensa al subirle un poco más, ya que si, tiene más potencia los Sennheiser, en cuestión del audio, muy equilibrado y si alcanzas a notar detalles en la música que no note en los anteriores, quedé sorprendedido!! 10/10 compraría otros sennheiser sin duda.

These headphones are very well made and great sounding they come with several ear pods even for people with small ear Channels for you to choose from they are a little expensive but worth the money from Amazon ….