




🎶 Elevate your sound game — because average earbuds just won’t cut it.
The Sennheiser CX 300S In-Ear Headphones combine precision German engineering with a customizable fit and smart remote control, delivering rich, detailed sound and effective noise isolation. Designed for professionals and music lovers alike, these wired earbuds feature a durable metal casing, four sizes of ear adapters for personalized comfort, and an inline remote for effortless control of music and calls. Perfect for daily commutes, focused work sessions, or casual listening, the CX 300S offers a premium audio experience backed by a 2-year warranty.







| ASIN | B07NFQX75J |
| Age Range (Description) | Adult |
| Audio Driver Type | Dynamic Driver |
| Best Sellers Rank | #14,685 in Electronics ( See Top 100 in Electronics ) #985 in Earbud & In-Ear Headphones |
| Cable Feature | Retractable |
| Carrying Case Color | White |
| Compatible Devices | Phone |
| Connectivity Technology | Wired |
| Control Method | Remote, Touch |
| Control Type | remote |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.1 4.1 out of 5 stars (1,514) |
| Date First Available | February 1, 2019 |
| Earpiece Shape | In Ear |
| Generation | 1 |
| Global Trade Identification Number | 00615104327818 |
| Hardware Interface | 3.5mm Audio |
| Headphones Jack | 3.5 mm Jack |
| Included Components | CX 100 Earphones, 4 Ear adapter Sizes (XS/S/M/L) |
| Input Device Interface | Audio jack |
| Item Weight | 0.38 ounces |
| Item model number | CX 300S White |
| Language | English, English, English, English, English |
| Manufacturer | Sennheiser |
| Material | Plastic |
| Model Name | CX 300S White |
| Noise Control | Sound Isolation |
| Noise Control Features | sound_isolation |
| Number of Items | 1 |
| Product Dimensions | 0.5 x 0.5 x 0.5 inches |
| Special Feature | Lightweight, Microphone Included, Noise Isolation, Tangle Free Cord |
| Specific Uses For Product | Personal |
| Style | In earphone |
| Supports Bluetooth Technology | Yes |
| UPC | 615104327818 |
| Units | 1.0 Count |
| Water Resistance Level | Not Water Resistant |
L**P
Sounds good. Metal casing. Seems sturdy
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.
A**S
Excellent
If you want good quality speakers, look no further than Sennheiser. You could probably get better speakers if you are willing to pay more for the privilege, but for the price you pay these are good speakers. My music sounds great. They are comfortable. Also the microphone works when I use it for phone calls. And I know this seems like a small thing, but the cord feels unusually sturdy and it really is kind of "tangle-free". Unlike other products I have used, this cord really does resist tangling, and it just feels sturdy. Nowadays, I see many people using those wireless earbuds. If you are like me, looking technology-forward is not your main concern when choosing earphones. I want good sound. And for every dollar I spend, I want that money going into the speakers, not in wireless technology. For me the wires are not a problem at all and I'm perfectly happy to have the wires as long as they come with good speakers attached. I will add that the wires are symmetric, which I very much prefer. I don't like the kind where the main wire goes up to one ear and then a secondary wire goes over to the other year. It's a very good product overall. I've been using mine for a few months with no complaints. I rank this 5 stars for giving me everything I could expect for the money I spent.
R**H
Great Choice for Recreational Use
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.
C**H
Excellent quality
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.
J**E
Good sound, weak durability
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.
J**O
Good Sound - Silicon Tip Defective - Do Not Stay On
Headphone good sound - Silicon Tips Fall Off If I Take A Deep Breath Rendering them worthless 1 earphone split in half - after 6 months-hardly use them - sent them back w Amazon invoice & RMA . Got Them back NOT REPAIRED, with a note saying I did not buy them from an auth retailer ???? Dishonest Manufacturer - Sennheiser's 1 year warranty is worthless - DO NOT BUY PRODUCTS FROM THIS COMPANY
N**M
Muy buen sonido vale la pena
D**A
Tengo poco con ellos y no han pasado por la prueba del tiempo, entonces no puedo hablar de esa parte. En cuanto a audio, suenan muy claro, reproducen todos los sonidos con nitidez, le falta un poco de cuerpo/punch al bajo pero siguen reproduciendo correctamente esos sonidos. Se compartan bien en diferentes géneros, a diferencia de otros audífonos que priorizan bajos sobre otros elementos y terminan por ser "especializados" para música electrónica básica, descuidando la experiencia de escuchar otro tipo de música. En cuanto a relación calidad-precio, los compré por la marca, no tengo suficientes comparativas con audífonos de la misma gama para hablar de este factor, pero están bonitos y tienen mejor feel que otros más baratos. Los recomiendo aunque podría haber mejores opciones, sólo que no las conozco.
O**E
Bester Kopfhörer den ich jemals hatte als kabelgebunden. Ist eben Sennheiser
C**.
Bonjour, J'ai acheté ces écouteurs Sennheiser CX 300S pour une écoute filaire donc et j'en suis pleinnement satisfait : bonne qualité d'écoute, attention à bien choisir la bonne taille d'embouts silicone et de bien enfoncer l'embout dans l'oreille : sinon mauvaise qualité de son et pas bien isolé des bruits extérieurs.
V**L
Amazing earbuds. The sound portfolio is excellent and I would highly recommend getting a pair of these.
C**N
Sonido de calidad. Se ajustan un poco mal pero el sonido es bueno. Además no sé enredan y son torteros.
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