Sennheiser CX 400BT – Review – Earphones

Intro

The Sennheiser CX 400BT are Bluetooth earphones that are one of the latest additions from the well-known German company Sennheiser, which is renowned for the quality of its audio products.

What really makes these headphones special is the quality of sound they provide. In fact, thanks to advanced audio technology, they are able to provide crisp, balanced sound with a wide dynamic range and accurate frequency response.

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In addition, with the customizable equalization function via theSennheiser Smart Control companion app, you can adjust the audio to suit your personal preferences.

If you are looking for earbuds, we recommend our article: Best Bluetooth Earbuds.

If you are looking for quality Bluetooth headsets that are not too expensive, we definitely recommend that you consider them.

Below we will go over the features of this product, shedding light on its outstanding qualities that set it apart from other mid-range earbuds.

Audio quality

The Sennheiser CX 400BT are true wireless earphones that offer excellent audio quality. With 7 mm dynamic drivers, they are able to produce balanced sound with deep, powerful bass and crisp, clear highs.

They can pick up a large number of sound frequencies ranging from 5 to 21000 HZ. This range is wider than that possessed by its competitors in the mid-range market.

Passive noise cancellation (ANC) is another outstanding feature of these earphones. It enables the elimination of unwanted background noise and allows the user to enjoy music or calls more crisply and clearly. In addition, the CX 400BTs allow you to select from three levels of noise cancellation to suit different situations.

The Sennheiser CX 400BTs feature a customizable equalizer, allowing you to adjust the sound to your preferences. This means that bass, middle and treble levels can be changed so that the best setting can be chosen according to different genres of music or user preferences.

Finally, we emphasize the fact that these devices possess a high sound pressure level 94 dB/mW. This measure indicates the level of acoustic energy present in a sound signal relative to the input power. The higher the pressure, the better the quality of the incoming sound.

Battery life

The Sennheiser CX 400BTs have excellent battery life, which, overall, reaches a maximum of 20 hours. The earbuds can be used continuously for about 7 hours while, the charging case provides an additional 13 hours of battery life. This means that users can use these devices for an entire day without having to worry about recharging them frequently.

The battery power of the earbuds is 55 mAh, a low number compared to what other more expensive earbuds possess on average. The charging case, on the other hand, has 420 mAh.

In addition, these devices have support for fast charging, ensuring a full battery charge in about an hour and a half.

Unfortunately, the Sennheiser CX 400BTs do not have the ability to be charged via Wireless.

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Compatibility

As for compatibility, theSennheiser CX 400BT easily connects to most IOS, Android and Windows devices.

Connection is via the Bluetooth 5.1 standard, which ensures a robust and delay-free connection with the associated device. Its coverage, moreover, can reach a maximum distance of 10 meters, allowing the user to move away from the connected device during the listening experience.

The headphones support the Aptx codec, which is used to transmit audio wirelessly with Bluetooth. It provides higher data transmission speed between the device and the earbuds.

Finally, they offer multi-device connectivity. This means that you can, for example, connect headphones to your smartphone and your computer at the same time, without having to worry about making disconnects to switch between devices.

Microphone Quality

One of the most important features of these earphones corresponds to the quality of the built-in microphone.

First, it is important to note that the two microphones of the Sennheiser CX 400BT are designed to offer exceptional sensitivity. Due to this feature, the incoming sound is clear and crisp even when the user is in noisy environments.

In addition to sensitivity, another important factor is ambient noise cancellation. This function allows the microphone to eliminate unwanted background sounds, such as traffic noise or voices of people nearby.

Design and Comfort

The design of the Sennheiser CX 400BTs is minimalist and refined, characterized by the combination of high-quality materials with elements belonging to cutting-edge technology.

Ergonomics is another important aspect of these devices. The headphones have in-ear fit and are designed to fit comfortably in the ear, thanks to their soft silicone ear tips available in different sizes.

The earbuds, however, are a bit heavier than the average of other devices, weighing about 12 grams. They are available in a single black color option, and feature a matte finish that gives it an understated and elegant appearance.

The charging case has dimensions of 5.9 x 3.38 x 4.23 cm and weighs about 49 grams, making it a lightweight and easily pocketable product.

Finally, the Sennheiser CX 400BTs have decent protection against water but not dust, with an IPX4 rating (The first number in the IP rating refers to protection against dust, while the second number refers to protection against liquids). This means they can withstand splashing water, confirming them as ideal for use during physical activities.

Additional functions

One of the important aspects of the Sennheiser CX 400BTs lies in the fact that they possess a fair set of useful features.

• They have built-in touch buttons on each earpiece. With them, you can control music playback, answer calls, activate your smartphone’s voice assistant and more through a series of intuitive touches.

• They include passive noise cancellation technology that isolates the user’s perception from the surrounding environment.

• They are compatible with voice assistants. This function allows the device to inform you about important information through its audio function.

• They possess a support for fast charging, reducing the time it takes to charge the device.

• They support the Aptx codec, which allows audio to be transmitted wirelessly.

• Finally, they have Multipoint Counting, a technology that allows earbuds to be simultaneously connected to multiple devices.

Being mid-range earphones, the Sennheiser CX 400BTs lack some features found in other more expensive devices. Some of them are: ambient sound mode, active noise cancellation, IN/ON – ear detection and “Find earphones” function.

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Configuration

The initial setup of the Sennheiser CX 400BTs is done manually.

Once these earbuds have been paired with a device for the first time, subsequent connections will occur automatically.

If you want to further customize the audio experience of the CX 400BTs, you can download the Sennheiser Smart Control app, available for iOS and Android. This application allows you to adjust the equalizer, ambient noise cancellation mode and check the battery status of the headphones.

Price and Conclusion

Sennheiser CX 400BTs are priced around 100 €. Considering the features of this product, we can say that these earbuds are among the set of the best Bluetooth earbuds for quality-price.

In conclusion, if you are looking for a quality pair of wireless headphones at a reasonable price, the Sennheiser CX 400BT are an excellent choice. With their stable Bluetooth technology, outstanding sound quality and comfort during use, these headphones are sure to meet your listening needs.

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Pros and Cons

	Pro	Against
Audio quality	Equipped with passive noise cancellation and a wide range of sound frequencies.	It does not have active sound cancellation.
Battery Life	Good battery life (20h) and presence of a charge level indicator.	It does not have a wireless charging function.
Compatibility	It uses the 5.1 standard and discope of the AptX codec.	They do not have the AAC codec.
Microphone Quality	The microphone records numerous nuances of highs and lows.	It has no ambient noise cancellation function.
Design and Comfort	The design is sleek and modern. Sweat and water resistant (IPX4 certification).	They do not have holders to attach them to the ear.
Additional Functions	Includes fast charging function and voice assistant compatibility.	It does not have an ambient sound mode.
Price	Good price compared to other high-end devices.	✕

Ultimo aggiornamento 2023-10-01 / Link di affiliazione / Immagini da Amazon Product Advertising API