Sennheiser CX 200 – Review

Sennheiser CX 200

Sennheiser CX 200

| Dynamic Driver |

? The Sennheiser CX 200 are part of the budget line of Sennheiser earphones, we will run them through our tests and see how they perform. You probably know or have heard of Sennheiser as they one of the major brands that specializes on earphones, headphones and microphones.

once you get one you realize how small they actually are (similarly sized to a microdriver earphone)

Sennheiser does not provide a lot of in depth technical specifications about the CX 200, for example there is no information about the size of the dynamic driver or the power capacity.

On photos the size of the CX 200 seems smallish but rather standard, instead once you get one you realize how small they actually are very similarly sized to the Somic MH403 and even shorter than many microdriver earphones as the UiiSii Hi-705, Remax RM565i, KZ HDS3 or Sony MH1 Livesound.

The housing is made of plastic with a rear part shape that is intended to facilitate grabbing them with your fingers and adjusting their position. The cable is rounded and rubbery to ease tangling issues.

FIND ALL: Earphones Scores Compared

MORE: Sennheiser Earphones Reviews A

Accessories & Packaging

The packaging is a simple plastic packaging that hold the earphones and 3 eartips.



Bass & Sub Bass

The bass of the Sennheiser CX 200 is conservative lacking sub-bass depth and mid-bass punch. There is no bleeding of the mid-bass into mids and vocals frequencies. Sub-bass gains more depth if equalized but mid-bass remains similar without much change. Overall equalizing bass will recess the rest of the frequencies.

the Sennheiser CX 200 sub-bass gained more depth and mid-bass punch was exponentially enhanced

Putting the Sennheiser CX 200 under our extreme bass tests when custom equalizating for basshead response they were able to take 51% of a Fiio’s E12 amplifier maximum power while set in high gain and bass boosted turned on. Under this amplification and equalization the Sennheiser CX 200 sub-bass gained more depth and mid-bass punch was exponentially enhanced. Despite mid-bass punch gained, the CX 200 have no basshead impact at all, they result with impact below the Remax RM-565i, UiiSii Hi-705 and slightly below the Joyroom JR-E102.


MORE: Earphones Amplification Power Comparison

MORE: Best Basshead Earphones

SEE ALSO: Best Fun Sounding Earphones Chart


Mids & Vocals

Mids are recessed with lower and middle mids laid back and vocals distant. Middle mids and higher mids are not as recessed and can actually get a bit harsh with very high peaks. An custom eq can warm up vocals and remove a bit of the recession but not by much. At the same time, vocals start to sound a bit boxy.



Highs & Treble

Highs are mediumly recessed, can still be perceived but lack detail and definition. When songs reach very high peaks the CX 200 can get a bit piercing, contrarily there are no traces of sibilance.


Sennheiser CX 200
Sennheiser CX 200


Sound Leak

The sound that leaks out of Sennheiser CX 200 is not very high, slightly better performance than average. On normal situations people may perceive some noise coming from your earphones but not excessively.



Sound Isolation

The sound isolation of the Sennheiser is fair. Considering the size it could be said that they perform very well for the size. Surrounding noises get reduced noticeably but there is not a total isolation from the environment, applying mid to high volumes helps to isolate better.




The extremely small size and ultra light weight makes the CX 200 a wonder of comfort, they also fit tightly enough in the ears and they do not generate any type of discomfort or ear pain. The small housing allow the Sennheiser to fit almost flush with the ears allowing to be used in bed while resting the head sideways on a pillow. The original back shape of the Sennheiser CX 200 was designed to allow a better and easier way of grabbing them your fingers and adjusting fit and position. Overall the design is well accomplished and does what is was intended for but there is a flaw with it. Because of their very small size and flush fit, once positioned in your ears grabbing them is quiet difficult.



Response to Equalization

The Sennheiser CX 200 responds well to custom equalization of highs frequencies but it cannot be said the same of bass and mids/vocal frequencies. By applying an equalization highs become much more detailed and defined without emphasizing the piercing peaks and does not introduce sibilance. On the other hand, mids and vocals do not improve much from their recession and can fall into boxy vocals easily. Sub-bass is able to gain depth, mid-bass does improve punch and recesses too much mids/vocals frequencies.


MORE: Editor’s Picks Earphones Chart

MORE: Best Bang for the Buck Earphones


Scores Scores

FIND ALL OUR: Earphones Reviews / In-Ear Headphones Reviews

MORE: Best Earphones Charts


Driver UnitUnknown
Power CapacityUnknown
Impedance16 ohms
Frequency Response20-20,000Hz
CordY-type, round cord
Cord Length1.2m
PlugL shaped stereo mini plug
WeightApprox. 5g
Supplied Accessories3x Earphone tips (silicone) S, M, L



The review of the Sennheiser CX 200 was possible thanks to the kind contribution of Jan Fedra who provided us a review unit.

We highly discourage anyone from trying to apply our testings to your own earphones, the risk of damaging or permanently breaking your iems is absolutely probable to happen. With our standardized equalization and amplification tests we push the limits of the earphones to the extreme. If anyway you decide to do so, we cannot be held responsible of the damage done to your equipment. Do it at your own risk.

Sennheiser CX 200