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Sennheiser CX 300 II-Black Reviews

Positive Reviews


Awesome for the price!! Pretty great sound quality. Perfect for a casual usage headphone!


Pros: Cheap and Great sound quality

Cons: Lacks bass, One side is longer than the other and it just annoys me..

    I am not the best at reviewing.. but here I go.  I bought these headphones just to use on the go and was very impressed by the price performance. I own the flagship Sony H3, and they very similar in the SQ department. It is not bass heavy at all. Any iem with good bass would essentially be an improvement on these. It is not a headphone that with wow factor. It is just great for casual usage.    Design:  It is designed to have the right wire wrap around the back of your neck to help fight microphonics. However, it bugs me a lot. If you don't put it behind your neck, it hangs on the left ear and swings back and forth as you walk. It is a little silly...
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balanced sound compared to older cx iems. small soundstage, durable.


Pros: isolation, loudness, durability, comfort, bass, whatever you hear seems to be clear and balanced.

Cons: small soundstage, price

firstly, i think, these earbuds have 9mm driver instead of a 13.5 mm one, which may be a reason for smaller soundstage. for the price, i expected a better soundstage, ex300s cost less, yet have better soundstage. The bass is good, goes low. highs and mids sound good too. SOME PEOPLE SAY THESE ARE MUDDY AND BOOMY, BUT THESE AREN'T CX300, THESE ARE CX300-II PRECISION. The sound is balanced, with nice bass. Not much detail though. but, a balance and clear music experience. Highs are sweet. burn-in helps these to become more balanced (could be an illusion).    The build quality is fantastic. The size is small, fits well, perfect isolation, comfortable. The cable isn't flat, but...
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Negative Reviews

Karan Sharma



Pros: Good balanced bass and sound

Cons: lacks details in sound very much

After getting mx 170 of sennheiser whose sound details were amazing . I was much expecting from these earphones . The so called cx 300 ii was not even close in detaling of sounds like mx 170 . And all my sennheiser earphones had issues after 8 to 10 months . So better get them in warranty of 2 years . Overall its a very good company . I am getting new earphones this week . Can anyone suggest to get cx 180 or mx 170 . I need detailing in sound .

Terrible, even if you are a basshead.


Pros: Design is quite good for price, Supreme comfort

Cons: Bloated and muddy bass, veiled midrange, lackluster treble

Bloated and muddy bass with a veiled midrange and a lackluster treble.    These are horribly overpriced in Australia and can be found at an authorized dealer from $60-$100, although I bought mine way back in the middle of 2009. What can I say, there are so many things out there for the price that whoop these thing sonically that there is absolutely no reason to own this. The amount of counterfeits floating around astronomical. I must say they are quite durable though.   These were my first step into the world of audiophillia.

BAD Experience with them...


Pros: Extreme Bass

Cons: Lack of Detail.. Infact No Detail At Alll... Extreme Basss...

Best Part Of these Headphones are the Bass.....  And Worst Part Of them is Bass.... Yess...... Audio lack quality... In fact no detail at all.. mids and highs are not present.... various instrument goes unheard...    Don't go for these earphones if audio quality is your concern.... These are just suited for thumpy music found in electronic and hip hop.... that to below expectation....  

More Reviews


Just Not a J-Wire Guy


Pros: Overall good sound, stong bass, small discrete package

Cons: The dreaded J-Wire, thin wires

I had an old pair of Sony over ear IEMs which needed to be replaced for use at the gym. That is when I thought that I would try the Sennhieser CX-300 II. I have a pair of HD-448 full circumaural full size headphones which are really nice and I had read a lot of good things about their equipment.  So, I decided to buy them at Best Buy for $50 knowing that Best Buy has a really good return policy if I didn’t like them.   I opened the package in the parking lot to be sure that there weren’t any problems. First of all the packaging is difficult to open. The plastic pinches the wire just below the strain relief next to the speaker unit. After getting them out of the package I...
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First (Accidental) IEM's?


Pros: Nice Design, Very comfortable, Offers great Isolation.

Cons: Too Bassy, Tight sound stage.

I bought these looking for a replacement to an older pair of in-ear's, and happened to stumble upon these. At first, I was very pleased with the sound, as it was a drastic difference compared to my older pair. Only now i realized that these are IEM's after visiting this sight. It was only after i bought my AKG 240's I truly noticed the sound quality.   The sound quality you ask? Well they are very nice overall, as expected from Sennheiser. The only big flaw is the amount of bass seems to drown out all other sounds. The high's seem to disappear every time the bass kick's in which is obviously a great draw back.   Otherwise these are very comfortable and fit nicely...
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Spend the extra $20.00 and get the CX400-IIs


Pros: Fit and small size

Cons: Sound just isn't there; lacks clarity and bass is distorted compared to 400s

I purchased these from Best Buy, having read good things about Sennheiser during my search for a cheap pair of IEMs for the gym. I ended up exchanging them for the CX400-IIs because I was disappointed with the 300s. They did not perform like a base model should.   I was displeased with the lack of clarity and separation. And I realize the for under $100, I cannot expect too much, especially from a single driver. However, these were not much more pleasing than my Sony IEMs that I got from Target for $30.00. Spring for the extra $20 and get the CX400-IIs. The difference in clarity and separation is immense between the two similar models. Also, the soundstage on the 400s is broader,...
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