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Sennheiser CX 275s Canal in-ear Buds w/ In-Line Mic and Remote

  • Universal fit
  • Premium comfort
  • Intuitive design - highly-aesthetic, ergonomic design
  • Convenience at its best
  • Ease of use
  • Email this page
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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


CX 275s

General SPEC

Frequency Response
121dB S.P.L. at 1KHz
3.5mm plug, 4 pole
Ear Coupling
Cord Length
3.94 ft/1.2 m

Microphone SPEC

Microphone Impedance
16 ohms
Microphone Frequency Response
Microphone Sensitivity
-44 dB


Universal fit - fits any smart phone in the market featuring 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 adaptors 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

Quick Info


  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years

Customer Reviews of the Sennheiser Electronic corp. CX 275s

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  • Jan P.
  • 10/10/2014 8:57:52 PM
  • Tech Level: Somewhat High
  • 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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  • Christopher W.
  • 4/8/2013 11:05:59 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

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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