Sennheiser CX 1.00 – Review

Sennheiser CX 1.00

Sennheiser CX 1.00

| Dynamic Driver |

? Sennheiser CX 1.00, one of the most affordable in-ear headphones from Sennheiser.

The Sennheiser CX 1.00 features a single dynamic driver per earpiece and a tiny footprint.

In fact, the housings are as big as the eartips, this is something that can be also seen on other tiny earphones such as the JBL C100si, JBL T110, Denon AH-C50MA and also other models from Sennheiser, such as the:

The cable of the Sennheiser CX 1.00 is rounded and rubberized, with a thin girth and an overall fragile feel.

The 3.5mm plug is L-shaped and has the same rubberized finish as the cable itself – the cable bifurcation is also rubberized.

You can buy the Sennheiser CX 1.00 in:

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Sennheiser CX 1.00 Review

Tests & Scores



Sennheiser CX 1.00 weight in Ounces and Sennheiser CX 1.00 weight in grams.

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Accessories & Packaging

The Sennheiser CX 1.00 unboxing results in 4 pair of eartips and not much else.

The packaging is a  simple small box with a typical design of Sennheiser headphones with a mainly black color and blue accents.



Bass & Sub Bass

The Sennheiser CX 1.00 has balanced bass that is non-invasive at all and tending to a conservative and clean sound.

Yet, they offer sufficient punch and mid-bass to cover most non deep bass-demanding genres.

Usually brands tune their models sitting in their entry level and affordable range with a very bassy and almost bass-only sound as this is type of sound that general consumers usually enjoy.

The Sennheiser CX 1.00, despite sitting as an ultra-affordable model from the brand, offers a refined tuning on their lower end with no boosted response nor bloated bass.

An EQ provides a bit of extra punch while depth can boosted but do not expect them to become a bassy headphone

Through out our extreme basshead tests, the Sennheiser CX 1.00 handled 25% of a FiiO A5 maximum power (set to high gain, bass boost on and custom basshead EQ applied).

The results showed, mild addition of mid-bass and sub-bass and, definitively, no basshead rumble nor impact.


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Mids & Vocals

The Sennheiser CX 1.00 mids exhibit no mid-bass bleed at all, male vocals are clean and clear with a relaxed and laid-back style.

Higher mids are neither forward nor overly recessed, offering a satisfactory balance sitting in between both extremes and never falling into harshness.

Overall, their midrange is remarkably clean but not dull sounding that results in an extremely pleasing sound to listen.

Their mids price-quality relation offers a tuning style comparable to some more “refined” headphones, which is highly unexpected from such an affordably-priced model.

Sincerely, Sennheiser CX 1.00 do not need any EQ intervention but, if wanted, they can be fine-tuned with good results.


Sennheiser CX 1.00
Sennheiser CX 1.00


Highs & Treble

The Sennheiser CX 1.00 highs are bright and resolve a competent amount of detail.

Similar to their mids, their highs offer a beautifully balanced tuning that is neither recessed nor forward, resulting in a superb and pleasant sound.

Moreover, treble-sensitive users will be glad to know that sibilance and piercing highs are not an issue with them – at all.

An EQ provides a crazy amount of added detail, brightness is greatly augmented and an overall opening up of their highs happens, still not introducing sibilance nor piercing highs.




Sound Leak

The sound leaking out of this Sennheiser headphone is very low and barely noticeable, making it an ideal companion in libraries.


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Sennheiser CX 1.00 plug
Sennheiser CX 1.00 plug


Sound Isolation

The sound isolation provided by the Sennheiser CX 1.00 is fairly stronger than many average headphones and very respectable given their tiny size.


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The very small earpieces, feather-light weight and straightforward design, makes the Sennheiser CX 1.00 an extremely comfortable earphone with 100% pain-free fit.

Moreover, the CX 1.00 can fit flush with the ears, being well-adapted for under the helmet usage or while resting the head on your hands.


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Response to Equalization

The Sennheiser CX 1.00 showed a flawless EQ response on highs, being also capable of fine-tuning their mids but did not has much effect over bass depth nor punch.


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Scores Scores

Sennheiser CX 1.00 Scores

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Frequency Response (raw)

Sennheiser CX 1.00 Frequency Response Curve

Sennheiser CX 1.00 frequency response curve
Sennheiser CX 1.00 frequency response curve

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Sennheiser CX 1.00 Technical Specifications


Driver UnitSingle driver
Power CapacityUnknown
Impedance28 ohms
Frequency Response17-20,000Hz
CordY-type, round cord
Cord Length1.2m
PlugStereo mini plug
WeightApprox. 10g
Supplied Accessories4x Earphone tips

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Sennheiser CX 1.00 FAQ

How many drivers does the Sennheiser CX 1.00 have?

The Sennheiser CX 1.00 is a single driver headphone. Which means that the Sennheiser CX 1.00 has 1 driver per side.

What type of headphone is the Sennheiser CX 1.00?

The Sennheiser CX 1.00 is an in-ear headphone.

The Sennheiser CX 1.00 is an open, semi-open or closed back headphone?

The Sennheiser CX 1.00 is a closed back headphone.

What is the price of the Sennheiser CX 1.00?

You can check the most up-to-date price of the Sennheiser CX 1.00 by following THIS LINK.

Where can I buy the Sennheiser CX 1.00?

You can buy the Sennheiser CX 1.00 HERE

Which Sennheiser CX 1.00 colors are available?

The colors available for the Sennheiser CX 1.00 are: black, white

What cable do the Sennheiser CX 1.00 have?

The Sennheiser CX 1.00 have a round cable.

What cable connection does the Sennheiser CX 1.00 have?

The Sennheiser CX 1.00 cable connection has a 3.5mm mini stereo plug.

Are there replacement cables for the Sennheiser CX 1.00 ?

The Sennheiser CX 1.00 cables cannot be replaced

Does the Sennheiser CX 1.00 have Bluetooth / The Sennheiser CX 1.00 is a wireless headphone?

The Sennheiser CX 1.00 does not have Bluetooth but you can buy Bluetooth cables to make the Sennheiser CX 1.00 Bluetooth-enabled headphones. Or you can buy adapters such as the FiiO BTR3 to make it wireless Bluetooth.

Is the Sennheiser CX 1.00 compatible with Apple devices?

The Sennheiser CX 1.00 is fully compatible with Apple devices.

Is the Sennheiser CX 1.00 compatible with Android devices?

The Sennheiser CX 1.00 is fully compatible with Android devices.
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Sennheiser CX 1.00 Photos

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 1.00