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Sennheiser Electronic corp. > 
Item#: 9SIA0AJ2449762

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

Sennheiser CX 275s Canal In-Ear Buds with In-Line
Mic and Remote

Empower all your mobile communications with awesome stereo sound. Universal mobile music and communications headset featuring a smart remote and microphone. Adapter cable included.

  • Universal Fit - Fits any smart phone in the market equipped with a 3.5mm headphone jack, including Android, Windows Mobile, RIM (Blackberry) and iOS devices
  • Signature Sennheiser Sound - High powered dynamic speaker systems for great bass-driven stereo sound
  • Premium Comfort - Ear adapters in different sizes for excellent ear canal fit and ambient noise attenuation
  • Intuitive Design - Highly-aesthetic, ergonomic design
  • Ease of Use - Integrated microphone and smart remote for enhanced usability
  • Convenience at its Best - Storage pouch for hassle-free portability


Connector 3.5mm plug, 4-pole
Frequency Response (Microphone) 100 – 10,000Hz
Ear Coupling In-Ear
Pick-Up Pattern Omni-Directional
Sensitivity -44dB

What's in the Box


Learn more about the Sennheiser Electronic corp. CX 275s

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years
  • Read full details

Customer Reviews of the Sennheiser Electronic corp. CX 275s

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  • Ray A.
  • 4/21/2015 5:30:23 AM
  • Ownership: 1 day to 1 week
  • Verified Owner

3 out of 5 eggsOK for the price

Pros: - Low profile, so wearing ear muffs/180's doesn't make it uncomfortable.
- Mic is a great feature on nose isolating earphones

Cons: - Mids and highs aren't all that great. A lot of songs sound muffled and it's not something an equalizer can completely fix.
- Cord tangles really easy.
- Do not spend anything more than $80 on these.

Other Thoughts: If you can avoid it, try not getting anything from Action Packaged Inc. They were really slow processing my order, I couldn't get a hold of anyone who could help me cancel my order over the phone and they completely ignored my emails.

*The three stars I gave in this review are a reflection of the product itself. My order problems are another issue.

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  • Jan P.
  • 10/10/2014 8:57:52 PM
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggssomewhat satisfied

Pros: - Amazing sound - never heard earbuds play anywhere close to this
- I would say, well packaged, and I don't say that often
- Carrying bag is a nice touch, although pretty useless thing for me
- The sound is amazing!
- Mic works well, if not windy
- The noise cancellation is an awesome feature - example: see other thoughts

Cons: - the only con I can find is the cord, it is so thin , the 3.5 jack is kinda flimsy too. I mean, it is so thin, that you are scared to pull it out of your ear. or pick your phone up by the "string"
- Also the included material, like manual and stuff is non existing, you have to disassemble the entire packaging box to find a web address where you will find out if your phone does or does not need the little cord extension included, what it does, or why would you need it .. who knows..
- Missing the L - R marks on the actual earphones .. I mean, you figure that out, but you know.. if there was a manual, that said "mic goes to the right" ..

Other Thoughts: -I have and in window ac unit and my 65w 2.1 speakers won't take the noise away completely (My 300w stereo will) anyways, these earbuds, I put on, and I hear just a little hum, as soon as you put music on, even on the lowest volume, you are pretty much disconnected from the outer world
- I bought them for riding bike and for that purpose they isolate the noise of the wind flowing around, unlike the ones that came with my phone ..
- $20 would be much better price but overall I am satisfied with what I got

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  • John H.
  • 11/13/2013 3:38:50 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

3 out of 5 eggsSound Great, but uncomfortable.

Pros: These sound fantastic for the price.

Cons: Can only wear them for about an hour at a time before my ears get sore. I tried all 3 inserts, none make them more comfortable. The actual base/ear insert (speaker compartment) is slightly too large for my ears. Might be ok for some but not me.

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5 out of 5 eggsGreat headphones for the price

Pros: Great sound quality, microphone works great, has a button (ooohhh!). Very comfortable tips. Easier to clean than memory foam tips

Cons: Mic near useless on a moving bike.

Other Thoughts: These are a great pair of headphones, well worth the price!

1 out of 1 people found this review helpful. Did you? Yes No

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