Review and tips

A detailed review of Sennheiser CX 400 BT True Wireless device

You can also customize your device through the Smart Control platform. It is clean and stable enough for you to familiarize. You can rearrange the touch controls, decide how to answer calls and so on. Everything is managed easily.

Design

Sennheiser did not focus much on design, which means the outside look. Of course, this does not mean that this model from Sennheiser is bad at design. However, the plastics by which they are made do not provide a special feeling and they are rather heavy to sit firmly on the wearer’s ears when in use. In spite of the fact that the appearance is not highly recommended, and the weight of 6 grams per earbud is not ideal, the CX400BT is a secure and comfortable device to use for hours.

What is more the charging case is measured at 59 x 34 x 42mm and weighs 37 grams without the earbuds inside. With such a heavy build, 20 hours of battery life  from the CX400BT is quite disappointing.

Moreover, the sizable earbuds provide a lot of space for a capacitive touch surface, and the Sennheiser device is very simple and responsive to work with. Between the left and the right buds, there are enough buttons for functionalities such as play/ pause, answer/ end/ reject call, skip forwards/ backwards and so on. Voice assistants are also equipped with. And with the sharp-eared mics in each earbud, your voice assistant is able to understand your voice very effectively.

You can also customize your device through the Smart Control platform. It is clean and stable enough for you to familiarize. You can rearrange the touch controls, decide how to answer calls and so on. Everything is managed easily.

Audio performance

The CX400BT are provided with four different sizes of silicone eartips and, similar with all in-ear designs, it is necessary to be sure that the earbuds fit your ears so that you can make the most of them.

In addition, the company has claimed a frequency response of 5Hz – 21kHz. It is also no doubtful when it comes to their credentials of low frequency. Finally, the Sennheiser headphones are able to shape bass sounds in a convincing manner, loading them with information about texture and attack.

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