Sennheiser CX300-B Earbuds (Black)

General Information

For the money, this earphone is the best way to upgrade the sound from your iPod or MP3 player. The earphones that came with your player may not be up to what you expect. All users of MP3 players and iPods, get ready to upgrade your sound and style with the Sennheiser CX300 earphones. Upgrading earphones is the best way to customize the sound to what you want to hear. The Sennheiser CX300 provides accurate tones for tunes throughout the dynamic frequency range. With a 112dB Sound Pressure Level, you can lock out background noise and revel in the pleasure of listening to your music. And Sennheiser has been and is on the forefront of delivering great sound from audio systems great and small. Elevate your listening to transcendental pleasure with the Sennheiser CX300 earphones. Sennheiser is the acknowledged world leader in headphone-transducer technology. These CX 300 headphones are Sennheiser's leading introduction to in-ear-canal earphones. The CX 300 model is ideal for use with portable MP3, CD, MD, DVD players and many other portable devices with 3.5mm headphone sockets. Soft Silicone-Rubber Ear adapters in three different sizes are included to ensure a perfect fit, high wearing comfort and an excellent attenuation of ambient noise. Get away from the daily noise and surround yourself with private audio. The CX300 is the best partner for your player, your ears, and you. Dynamic Transducer Carrying Pouch Sennheiser 2 year warranty Color - Black

Latest reviews


New Head-Fier
Pros: Not very expensive
Cons: Awful sound
Having been a marketing casualty years ago by the Sennheiser headphone giant having two decent over-ear headphones bought of them, I decided to have these for an MP3 player additionally seeing good reviews about them.
I don't know if eartips of them not fitted well in my ears but the sound was awful!!!
I can't say enough about mids, trebles, basses etc. but overall the sound was harsh to a point that my ears couldn't stand the dreadfull noise of them!!!
As I was a newbie in IEM's it was a traumatic experience as it was difficult for me as a music user to buy another in-ear after them.
As I pre-wrote I hope there were the tips not fitted well in my ear canal because I didn't expect such a drawback from the Sennheiser company.
I don't recommend them at all!!!
(A day before the review I tested (without burn-in and Comply foams where I am an admirer) the Philips SHE-3590 and they are much better than 300's and they cost lower than 10 euros!!!)
Anyway, test them before you buy them.
Have a nice life, yannisgk.
My CX-300-B doesn't sound all that bad. I bought it 6 years ago and I still use it as my sleeping earphones. XD
@alpha421 They were not fakes (Amazon UK fulfilled) but as far as the sealing of the tips goes maybe I had a problem (they were my first in-ear buds and I didn't know anything about Comply foam ear tips).
@miceblue Sincerely I'm glad you enjoy them still, but I was unlucky about mine!!! :frowning2:


500+ Head-Fier
Pros: sound is decent
Cons: packaging, cord, 3.5mm jack, carry pouch,
Bought these as a cheap iem to use while my customs are being fixed, they sound pretty good for the price, isolate well enough to be bearable on the train, and weren't too expensive.
My problems with them come from the entire design of both the iem's and the product as a whole.
Plastic death packaging is awful, physically getting the phones out of the package was infuriating, rather than a pleasure, even with scissors, and a stanley knife.
enclosed where the earbuds, 2 extra sizes of silicone tips, and a plasticy pouch with a metal snap close ala sunglasses cases..
The pouch offers little or no protection for the buds, thoughtful, but pretty useless really. iems are easily damaged, that seems to be a fact, so a hardcase is somehting of a must in my books. even at this price point. Logitech can do it, so Sennheiser damn well should too.
The cable feels cheap, flimsy, and generally disgusting, I can't comment on it's durability yet, but it doesn't look promising. Even more annoying is that the length of cables after the splitter is whack.
The left bud has around half the cable to the right, so I'm forced to wrap the right around the back of my neck, this is both annoying, and dysfunctional. Why they do this is beyond me, it just makes them less convenient and comfortable to use.
Finally, is something that seems to be a theme with sennheiser products.. The 3.5mm jack, is right angled (which I like) but it if freaking huge, I can fit my index finger between the gap it makes with the player, that is totally unnecessary and seriously annoying.
I wouldn't recommend these to anyone, even if they sound good, they're horribly designed in my books,
finishing on a good note, they are at least comfortable IN my ears, even if the cable pulls unevenly on them.
Wow yours came with a case? I bought mine 5 years ago and I've really tried to abuse them to see if they break. People always complain about the cable and its durability...they still work perfectly fine for me after 5 years. They're my "in-bed" earphones.
The case is just a pleather pouch, I literally got them the other day, so I have no idea how long they'll last, they live in my backpack for uni, The cable, is disgusting, and flimsy feeling, I don't know if it is actually durable or not though, that will be a test of time


100+ Head-Fier
Pros: Loud, pretty easy to drive, Out of this world Bass, Comfy
Cons: Too much Bass, Sibilant/Harsh treble, Flimsy
The sennheiser cx300 was my first headphone of Sennheiser and my first earbud/headphone above 30 Dollars. The construction of the earbud itself is very great and the design too, small, classic, lightweight. The cable is pretty flimsy in the jack i had 2 pair of cx300, and both goes this way.
In terms of sound, these deliver a outstanding, in your face bass. I have some issues with that because the mids are sucked out. The highs are harsh and sibilant, i experience a little pain with those.
If the cable were not flimsy, i was paid $50 or $45 for this earbud, but both are gone in about two months..
I used my CX-300 for jogging, they got wet couple of times, but never broke or anything. Since then i've given them to my friend and they are still going strong after 1,5 years. Agree about the sound quality, they are pretty awful sounding.
Lol mines lasted a couple months then the right ear I think just stopped working so... they were my first set of non stock earphones and headphones in general for that matter :p


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