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

They sound good but are very uncomfortable for sleeping. I use ear buds to sleep to drown out the annoying snoring coming from my husband's side of the bed. I thought I would try out these Senheiser CX 300S ear buds because they were not too much more than the JBL T290 ear buds I was replacing (for the third time in 4 months making them much cheaper if they actually lasted). I paid $16.99 for each pair of the JBL's and the Senheisers were like $35 so it seemed like a good choice. They do seem durable with a metal casing (which is probably why they are uncomfortable for sleeping). They do sound a little richer than the JBL's which would have made them so much better for sleeping. I am keeping them to wear for streaming or to listen to music during the day.

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.

I previously owned Skull Candy Ink'd headphones, but the microphone broke. I've owned expensive Sennheiser open backed headphones that I love, so I thought I'd give these a try. First off, the construct is high quality. All of the tangible parts feel great and you know they took great care in designed them. The audio jack is skinny and will fit into your phone even if it has a bulky case. At the time, my skull candy earbuds were about $20, so comparing the audio between these and them, I'd say the Sennheiser sounds AT LEAST two times better. Like other Sennheiser products, the treble and base are well balanced, The sound comes in softer than cheaper earbuds and the best way to describe cheap earbuds is they BLURT music instead of it being carefully constructed. Not to talk these up too much because you are buying earbuds. I haven't heard an earbud sound nearly as good as a quality pair of headphones. These are great for recreational use: running, hiking, working out or routine housework. I saw a couple of reviews talk about noise cancellation. you DO NOT get noise cancellation with these. They give you plenty of tips to fit your ear as best as possible. If you have the right fit, its like wearing foam ear plugs and most of the ambient noise is blocked. However, it does not feel like foam earplugs and the ergonomic design fits the ear very well and is very comfortable. Overall for the price, it is a really great product, and if you're like me, you'll use them for years.

As expected from Sennheiser, these earbuds are of excellent quality and are extremely durable considering I have an awful habit of getting corded headphones caught on/tangled in things. The audio quality is great, highs are crisp and miss are clear, although the bass response is not as strong as I'd like. However, this is to be expected since the brand focuses on balance as opposed to bass punchiness. Comes with four different earbud sizes which I appreciate, although it would be nice to have multiples of each in case they get lost. Overall, they're definitely amazing considering the price tag.

I think the big thing to note here is how easily the earbud rotates with respect to its housing. Because it is inadequately secured, I found myself having to constantly rotate it so that it sat correctly in its original configuration. It would get messed up if the earbuds got yanked out of my ear for whatever reason (usually cat). This quickly resulted in the earbud coming entirely detached from the base held on by nothing except the two wires that send the signal/power to the little speaker in there, which inevitably led to a loss of sound, and so now it's just all the way broken. The sound was pretty good, totally satisfied with that. Just the durability is subpar. I have had a lot of earbuds in my time. These earbuds are less durable than most of the earbuds I've had. Below average durability. Given the price, I can't recommend them. If they would have lasted a year I would have had no complaints. They didn't. Therefore, this is my complaint.

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!

I have just bought these for the third time over the course of about 4 years. My last 2 went out and went the distance. However the one I bought this year in 2025 sounds TERRIBLE. The sound is muffled and super bass boosted. I do not know what changed. I plugged in my old half broken ones to compare it they sound way better compared to the brand new ones. I thought I was going crazy until I checked the recent reviews and also saw another similar complaint. I will be returning these after I find new replacements. I do not think I can go with the same brand. Something has changed with the production.

I have headaches so ear buds and iems is the way for me. With that being said I’m a competitive gamer on Xbox who plays rainbow six siege. For years I’ve heard about these earbuds. Beaulo A pro rainbow six siege player used these for years before moving over to Bose qc. They were called the senheiser 3.0 now the try are called senheiser 300s. I believe the difference now is having a built-in mic. I was unable to find any information. So I have to go purely off my experience. Firstly the fact that these are so light with this powerful a base is actually crazy. I was under the impression the bigger the earbud the more bass, well that’s just not the case with this earbud. Extremely light Powerful bass ( having the right fit tip fixed this) Now for the most important part which I think I’ll have to update later. The soundstage. It’s such a wide open soundstage I wasn’t used to it because I’ve been using cheap turtle beach battle buds. And Before you lose your mind on that here’s my experience on past earbuds. Tin t2 very accurate but too high pitch Blon 03 awesome bass but not accurate soundstage. HyperXcloud falls out of ears Rip OK now back to the turtle beach battle buds. These are so underrated The bass and the soundstage are so good for gaming hell anything music movies etc. my problem with them is they’re very bulky and get uncomfortable after some time and the mic is terrible always getting complaints about how people can’t hear me or whatever. In actuality it’s my fault because I don’t use the boom mic because that’s more pressure on the ear. OK now back to the Sennheiser 300s These are the only earbuds to ever compare to my turtle beaches my only problem is I’m not used to the sound stage yet. Even if I end up not using these for competitive R6, i’m probably gonna use this with everything else just for the simple fact the base is so exciting and it’s so light and I don’t even feel like I’m wearing anything. If I’m able to update I will give an update on the soundstage and how well they work with Rainbow six siege. Sorry for the long write, but I figured I should share my hundreds of hours of competitive FPS earbuds experience, Especially since there’s such little information out there. Update not good for R6 on Xbox. Turtle beach earbuds still king.