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Sennheiser CX 400-II Precision Ear-Canal Phones with Bass-Driven Stereo Sound (Black)

3.9 3.9 out of 5 stars 1,853 ratings
$36.35 with 9 percent savings
Typical price: $39.95
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Purchase options and add-ons

Brand Sennheiser
Color .other
Ear Placement In Ear
Form Factor In Ear
Noise Control Sound Isolation

About this item

  • High-end dynamic speaker systems with Neodymium magnets tuned for a natural sound reproduction
  • Superior fit in the ear canals offering highest attenuation of ambient noise
  • Integrated volume control
  • Optimized for MP3, iPod, iPhone, CD players and portable gaming systems
  • Symmetrical cable
  • Connectivity technology : Wired
› See more product details

There is a newer model of this item:

Sennheiser CX 300S In Ear Headphone with One-Button Smart Remote - Red
Sennheiser CX 300S In Ear Headphone with One-Button Smart Remote - Red
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Sennheiser CX 400-II Precision Ear-Canal Phones with Bass-Driven Stereo Sound (Black)
This item: Sennheiser CX 400-II Precision Ear-Canal Phones with Bass-Driven Stereo Sound (Black)
$36.35
Get it Jan 3 - 13
Only 6 left in stock - order soon.
Ships from and sold by Onogo US.
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Side Winder Mini and Max Headphone, Earbud and Charging Cable Winder and Organizer Perfect for Wrapping Earbuds and Cords for
$15.99 ($8.00/Count)
Get it as soon as Monday, Dec 30
In Stock
Sold by Fuse Reels and ships from Amazon Fulfillment.
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JSAUX iPhone Headphone Adapter, Lightning to 3.5mm Adapter [Apple MFi Certified] iPhone Aux Adapter Compatible with iPhone 14
$14.99
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Sennheiser CX 400-II Precision Ear-Canal Phones with Bass-Driven Stereo Sound (Black)
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Price-9% $36.35
Typical: $39.95		-12% $44.09
List: $49.95		$26.23-25% $14.95
List: $19.95		$19.99$29.99
Delivery
Get it Jan 3 - 13
Get it Jan 3 - 13
Get it as soon as Tuesday, Dec 31
Get it as soon as Monday, Dec 30
Get it as soon as Monday, Dec 30
Get it as soon as Tuesday, Dec 31
Customer Ratings
3.93.9 out of 5 stars1,853
4.24.2 out of 5 stars2,867
4.34.3 out of 5 stars9,345
4.54.5 out of 5 stars15,670
4.24.2 out of 5 stars2,170
3.53.5 out of 5 stars6
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    Sennheiser CX 400-II Precision Ear-Canal Phones with Bass-Driven Stereo Sound (Black)

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    Product Description

    The Sennheiser CX 400-II Precision ear-canal headphones offer natural dynamic sound reproduction, bass-driven sound, and excellent sound suppression. Get ready to upgrade your sound quality thanks to Sennheiser's superior musical reproduction. This brilliant sound is achieved with neodynamic magnets that are tuned precisely to produce life-like natural sound. To block out the noise from the outside world and guarantee a brilliant sound experience, the CX400-II earphones are equipped with adaptors that will enable a snug fit. Three different sizes of these silicone gel ear-adaptors are include by Sennheiser to ensure the perfect fit for you. For ease and comfort the CX400-II have a volume control attached to the cable. And when the cable is in the way, the cable winder will allow you to "tidy-up" easily and quickly and stow these gems in the included carrying pouch. Frequency response - 17-22,000 Hz Includes - Two types of ear adapters in three different sizes (S/M/L) for a custom fit Various accessories included - cable clip, cable winder and carrying pouch Connector - Jack plug 1/8 (3.5 mm.) gold plug, angled Cable length - 3.9 ft. (1.2 m.) 2-year warranty

    Customer reviews

    3.9 out of 5 stars
    1,853 global ratings

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    Customers say

    Customers find the headphones comfortable with an appropriate fit and earbud tips that stay in place. The shirt clip helps prevent them from slipping off. However, some customers experienced issues with functionality after a few months or years of use. There are mixed opinions on sound quality, build quality, value for money, and comfort.

    AI-generated from the text of customer reviews

    Select to learn more
    FitSound qualityBuild qualityValue for moneyComfortFunctionality
    7 customers mention "Fit"7 positive0 negative

    Customers appreciate the headphones' fit. They find the earbud tips stay on well, with an appropriate size available in small, medium, and large. The shirt clip helps prevent the headphones from slipping off.

    "...Comfort: The tips for the earbuds stay on well and fit my ears wonderfully...." Read more

    "...Excellent seal via the various size tips supplied. Shirt clip to keep the works from slipping off. And stronger bass than the good phones...." Read more

    "...These come with lots of soft rubber adapters to make the proper fit inside your ear...." Read more

    "...are not as good as the in box ipod ear buds in terms of sound, they fit nice, but also do not come with as many ear fittings as the cx 500s , please..." Read more

    56 customers mention "Sound quality"37 positive19 negative

    Customers have different views on the sound quality of these headphones. Some find them good-sounding, compact, and solid passive noise-isolating headphones with clear bass. Others mention poor quality, microscopic noise, and microphonic distortion.

    "For the price, these headphones are superb! A small drawback is the volume slider as I find myself constantly checking it to make sure it's at max...." Read more

    "...these are not my go-to acoustic heaven headphones, but they are nice sturdy things which are at a price point that I'm not afraid to abuse them...." Read more

    "Pros: Probably the best set of earbuds for the price. Good Bass as well. Ive used this brand for years now...." Read more

    "...The microphic noise (that "stethoscope" sound you hear when you jostle the cable of a pair of cheap ear buds) is just completely out of..." Read more

    29 customers mention "Build quality"11 positive18 negative

    Customers have different views on the build quality of the headphones. Some find them sturdy and durable, lasting well over a year. Others report poor build quality, with the materials feeling cheap and the design being flimsy.

    "...This will happen with most headsets as the wiring gets frayed...." Read more

    "...The quality is superb and I love wearing them to coffee shops or where ever I'm doing work." Read more

    "...The only part of the design that is weak is the right-angle plug...." Read more

    "...It seems that the wire in the right angle jack came apart. On the bright side, they are a very good sounding pair of headphones...." Read more

    16 customers mention "Value for money"11 positive5 negative

    Customers have different views on the value for money of the headphones. Some find them good value and say the sound quality is great for the price, while others feel they are not worth the cost and a waste of money due to uncontrolled microphonic interference.

    "...heaven headphones, but they are nice sturdy things which are at a price point that I'm not afraid to abuse them...." Read more

    "Pros: Probably the best set of earbuds for the price. Good Bass as well. Ive used this brand for years now...." Read more

    "A waste of money...." Read more

    "...What more can one want? Oh yeah a very decent price. Good value for the money!" Read more

    6 customers mention "Comfort"3 positive3 negative

    Customers have different views on the comfort of the headphones. Some find them comfortable with decent sound, while others say they are not as comfortable as the Sennheiser CX 300-II and are a bit sensitive.

    "...Decent sound, comfortable." Read more

    "...The sound of these buds are great but they are a tad sensitive. I think I'm going to step up a class and check those waters. Recommended." Read more

    "...Comfortable design." Read more

    "...However, I'm a little frustrated with the ergonomics. You have to jam the earbud into your ear canal in order to get the full good sound...." Read more

    6 customers mention "Functionality"0 positive6 negative

    Customers are dissatisfied with the headphones' functionality. They mention that the product stopped working after two months and one of the channels stopped working after five years. The results were disappointing.

    "...The results were extremely disappointing...." Read more

    "Used this product heavily for 5 years before one of the channels stopped working. Decent sound, comfortable." Read more

    "It stopped working after two months." Read more

    "They stopped working after just two weeks of use. I had CX 300 IIs for a year and never experienced any problems before losing them. Sending them back" Read more

    DONT BUY THIS EARPHONES. NOT WORTH YOUR MONEY
    2 out of 5 stars
    DONT BUY THIS EARPHONES. NOT WORTH YOUR MONEY
    These earphones have good sound quality, but the wires seem too thin. The accessories justify the cost, but I think they could be sacrificed for better quality of the main product.What really surprised me was when I took out the thin plastic layer above the logo (which is on the rear end of the earbuds), the logo simply vanished the next day. Now, my friends will think I am using some cheap knockoff!!UPDATE June 3Its been 4 months now, and the volume slider and rear end of one earbud have fallen out. Looks awkward now. The sound quality has deteriorated in the right ear bud. The left ear bud is now sounding louder, which is making this even more weirder.Thanks Sennheiser, your product barely lasted a year. Don't call yourselves THE BEST in audio industry.
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    Top reviews from the United States

    • Matthew R
      5.0 out of 5 stars Awesome quality but a few small quirks
      Reviewed in the United States on July 3, 2016
      Verified Purchase
      For the price, these headphones are superb! A small drawback is the volume slider as I find myself constantly checking it to make sure it's at max. I've never been a fan of hardware audio controls. But that doesn't detriment from the quality of these headphones as it never moves without me wanting it to.

      The noise cancellation is pretty nice, but the fit is a little different than the CX 300-II. I have to put it in my ear at a specific angle to have it fully fit. The CX 300-II fit in any angle to achieve the same closure.

      The quality is superb and I love wearing them to coffee shops or where ever I'm doing work.
      Helpful
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    • Audiophile in training
      4.0 out of 5 stars Good earbuds for the price
      Reviewed in the United States on March 14, 2012
      Verified Purchase
      While not the best earbuds money can buy, these are lovely earbuds for the $40 range. I've bought two pairs for myself.

      Build:
      The first lasted a year and three months and the second pair lasted a year and a half of daily use and abuse. I was not particularly careful with these earbuds (shoved them in a pocket of my bag and left plugged in, or falling asleep with them in) and had I cared for them better, I'm sure they would have lasted at least two full years.

      Comfort:
      The tips for the earbuds stay on well and fit my ears wonderfully. (I used the medium sized double flange tip, the the wide variety of tip that come with up the chances of finding a pair of tips that suit your needs.) I could easily wear these earbuds for three or four hours, but eventually they caused a little pressure which became uncomfortable with very extended listening.

      Sound:
      While these will not completely blow you away, the sound quality is definitely in line with the price, and was a great value when I bought my first pair for $27. They are immeasurably better than the horrible things that come with iPods, and have better balance than even the Apple in-ear headphones which go for $70. They have reasonable bass and good balance and can take a good amount of volume before you notice any sound distortion.

      Overall:
      For me personally, these are not my go-to acoustic heaven headphones, but they are nice sturdy things which are at a price point that I'm not afraid to abuse them. They have good sound and build quality for their price point, and I highly suggest them for someone looking for under $50 earbuds.
      7 people found this helpful
      Helpful
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    • Nick
      5.0 out of 5 stars Probably the best set of earbuds for the price
      Reviewed in the United States on March 12, 2016
      Verified Purchase
      Pros: Probably the best set of earbuds for the price. Good Bass as well. Ive used this brand for years now.

      Cons: The Left earbud will lose signal after a two years or so. This will happen with most headsets as the wiring gets frayed. It tends to happen quicker with this brand since I wear it when im walking or running and it gets scrapped around.
      Another con: the packaging it comes in is stupid hard to open. If Osama bin laden was hiding behind this packaging, he would still be alive today. :/
      3 people found this helpful
      Helpful
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    • Saltillo
      1.0 out of 5 stars A waste of money due to uncontrolled microphonic interference
      Reviewed in the United States on May 14, 2015
      Verified Purchase
      A waste of money. I have admired and owned many models of Sennheiser cans and my last earbuds before this were the CX-300s, which had flaws but fell into the "get what you paid for" category. For this pair I decided to step up and pay extra for a pair of CX-400IIs. The results were extremely disappointing. While the sound quality is just fine, you have to sit perfectly still and not let ANYTHING touch the cables. The microphic noise (that "stethoscope" sound you hear when you jostle the cable of a pair of cheap ear buds) is just completely out of control on these... way worse than on my CX-300s. Microphonic interference is caused by the quality of material used to cover the cables. Thickness and material selection are both factors that impact the degree to which mechanical vibrations can be transmitted up the cable and amplified by the ear bud speakers. But for the CX-400II Sennheiser has apparently opted for the worst of all possible combinations in designing and making these cables. The consequence is just horrendous. Yes I know that if I loop the cable over my earlobes, my earlobe can have the effect of dampening the vibrations slightly. But if I have a small ear lobe and wear glasses, so it is not like I have a lot of room to be wrapping headphone cables around by earlobe every time I listen to music (people with well endowed ears may experience different results). I do notice that the microphic effect gets progressively worse as vibrations occur further up the cable. Vibrations occurring on the cable between the plug and the volume control get dampened by the volume control itself and only a mild nuisance.Between the volume control and the left-ear/right-ear Y splitter the effect becomes much worse. But it only becomes absolutely unacceptable and intolerable on the individual cables from the Y-split to the ear bud itself. In any event, I intend to continue my search for a better pair of ear buds to replace my CX-300s. I will not be settling for the CX-400II.
      8 people found this helpful
      Helpful
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    • cbiern
      5.0 out of 5 stars Such a deal!
      Reviewed in the United States on December 13, 2010
      Verified Purchase
      Bought these over a year ago to wear while working as a remodeling contractor rather than my expensive Etymotic Research ER4P. They don't miss a beat! Excellent seal via the various size tips supplied. Shirt clip to keep the works from slipping off. And stronger bass than the good phones. The cord is a little long but the in-line plug has saved them from being ripped apart when the cord catches on some protrusion. Sound is quite satisfactory for both the books I listen to as well as the wide gamut of music I love.
      What more can one want? Oh yeah a very decent price. Good value for the money!
      4 people found this helpful
      Helpful
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    • Swlabr
      2.0 out of 5 stars Unbalanced sound, poor volume and audio quality
      Reviewed in the United States on July 24, 2024
      Verified Purchase
      These headphones have about 30% of the volume of all my other non-wireless headphones, and are not properly balanced (one side is much louder than the other). I expected much more from Sennheiser after spending $36 for them. After just one month of infrequent use, they are worse than the pair they were meant to replace.
      Helpful
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    Top reviews from other countries

    Translate all reviews to English
    • Arturo Saldana
      5.0 out of 5 stars calidad del producto
      Reviewed in Mexico on December 4, 2024
      Verified Purchase
      Buena calidad del producto
      Report
    • Piotr
      5.0 out of 5 stars Dobre słuchawki do słuchania Hi-Res audio w podróży
      Reviewed in Poland on December 17, 2024
      Verified Purchase
      Używam tych słuchawek podłączonych do iPhone przez USB DAC FIIO K11, żeby słuchać streamingu i zapisanych plików Hi-Res audio. Jakość odsłuchu absolutnie akceptowalna, lepiej niż typowe słuchawki BT a nie trzeba ze sobą nosić dużych słuchawek nausznych i ich pudełka :-)
      Report
    • Mert
      5.0 out of 5 stars Çok kaliteli seri
      Reviewed in Turkey on December 9, 2024
      Verified Purchase
      Özellikle bass çok kuvvetli. Deri kılıfı, kablo sarıcısı ve her boydan bolbol kulak silikonları ile birlikte geliyor. Ses kalitesini çok beğendim umarım uzun ömürlü olur. 5 yıldız
      Report
    • Blake M Mesik
      3.0 out of 5 stars Great product but slow delivery
      Reviewed in Saudi Arabia on December 8, 2024
      Verified Purchase
      As above excellent product - sound and comfortable earbuds. The delivery was basically undertaken by a snail.
      Report
    • Andrea Fabbri
      5.0 out of 5 stars Ottime da sempre
      Reviewed in Italy on November 22, 2024
      Verified Purchase
      Compro da anni queste cuffie e non mi hanno mai deluso; sinceramente le preferisco anche alle cuffie bluetooth sempre della Sennheiser.
      Suono limpido e ottima presenza dei bassi.

      Una garanzia.
      Report