Sennheiser CX True Wireless review: all-rounder

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Sennheiser CX True Wireless

The Sennheiser CX True Wireless are a versatile, reasonably priced pair of true wireless earbuds. They don’t excel at one thing, but they reliably check most of the boxes you could want in a few low to mid range tops.

Sennheiser has been in the true wireless earbud space for a while now, and with the Sennheiser CX True Wireless, they’re aiming to make earbuds at a more affordable price. This pair of earbuds does not have active noise cancellation, but otherwise offers features that are in line with Sennheiser’s more expensive models. Is the CX True Wireless the next high-performance competitor?

This Sennheiser CX True Wireless review comes from the audio experts at our sister site SoundGuys. Check out their in-depth look at the Sennheiser CX True Wireless.

Who are the Sennheiser CX True Wireless for?

Anyone looking for a new pair of earbuds that can last all day and won’t break the bank. Athletes looking for something sweatproof but not interested in noise cancellation.

How are the Sennheiser CX True Wireless?

Sam Smart / Android Authority

The Sennheiser CX True Wireless is similar in design to other true wireless earbuds from Sennheiser. These have the same square shape we’ve seen before, now with all-black matte touch panels instead of glossy ones with silver logos. The housing is also almost identical to previous buttons.

The Sennheiser CX True Wireless is light and safe, but the lack of hooks or fins means you have to find the right tip.

The earbuds are a little bulky, but they’re light and secure, with earbuds in four sizes to ensure they fit your ears properly. These don’t have a hook or fin that fits snugly in your ears, so finding the right tip is important.

The case is also a bit bulky, but still compact. It’s made of plastic but doesn’t feel cheap, and the earbuds fit nicely into their slots, held in place with magnets and pins.

Sam Smart / Android Authority

The Sennheiser CX True Wireless are IPX4 rated, so they can withstand sweat and water splashes, making them safe to train with. Be warned that they can loosen a little while running, so make sure your fit is good and that you don’t move your head too much while wearing them.

The CX True Wireless connects via Bluetooth 5.2, meaning they may someday be able to use the LC3 audio codec and LE Audio. For now, the CX True Wireless supports the SBC, AAC, and aptX codecs, so these buttons are great whether you’re using an Apple or Android device.

See also: The best workout earplugs

How do you operate the Sennheiser CX True Wireless?

Sam Smart / Android Authority

Since these earbuds have capacitive touch panels, you can adjust the volume, answer calls, control playback and access your voice assistant without using your phone. Tapping once will pause playback, tapping twice will take you to the previous track from the left earbud and the next track from the right. Three taps activate your voice assistant and holding down decreases or increases the volume from the left button.

The Sennheiser Smart Control app gives you more control over the buttons, including swapping one of the tap buttons. It also allows you to adjust the EQ of your earbuds with a three-band EQ module or via preset options. More importantly, you can also get firmware updates here. While there is no Bluetooth multipoint, the Smart Control app allows you to seamlessly switch between recently paired devices, but only one at a time.

How is the battery life?

Sam Smart / Android Authority

Sennheiser claims that the CX True Wireless lasts up to nine hours on a single charge, but in SoundGuys’ tests they didn’t make it. With a constant output of 75dB, the left earbud lasted eight hours and 31 minutes and the right earbud lasted just five hours and 30 minutes.

It is quite normal for one earbud to deflate faster than the other with true wireless earbuds as one earbud is plugged into both your phone and the other earbud while one earbud is just plugged into the other. Sennheiser says it designed the earbuds to switch between which earbuds act as the primary connection point each time they are taken out of the case to reduce this skewed battery consumption, so more regular use will lessen this problem.

According to Sennheiser, the CX True Wireless case can be charged for up to 18 additional hours, and it delivered. The case charges with USB-C, but doesn’t have fast charging or wireless charging options.

How well do they block sound?

Sam Smart / Android Authority

The Sennheiser CX True Wireless doesn’t have active noise cancellation (ANC) – you need the Sennheiser CX Plus True Wireless for that – but that doesn’t mean they have bad attenuation. Once you get the right fit with the right earbuds, you’ll get solid isolation performance. Isolation rarely affects mid-range and low-range sounds that reach your ears, but the CX True Wireless does a good job of reducing this noise. It won’t be like having actual active noise cancellation, but sounds should seem significantly less distracting.

Check Out: The Best Noise Canceling True Wireless Earbuds

How does the Sennheiser CX True Wireless sound?

Sam Smart / Android Authority

The Sennheiser CX True Wireless frequency response (cyan line) follows the SoundGuys target curve (pink line) quite accurately in some of the higher ranges, but has a bit of emphasis in the bass and midrange. It sounds nice, nothing is over-staged and it doesn’t cause anything to be noticeably distorted.

Most genres of music should sound good through these earbuds, although the drop in treble range may mean that cymbals and some strings, as well as higher “buzz” sounds in some genres such as EDM may be a little harder to distinguish.

How’s the microphone?

Sam Smart / Android Authority

The microphone in the Sennheiser CX True Wireless is pretty standard for a pair of true wireless earbuds. It’s clear enough, although there are some dampening and digital compression noises. It still does a good job of reducing low-level ambient noise, but it’s certainly not great for recording speech. This is definitely a microphone for phone calls, and it’s fine for that.

Sennheiser CX True Wireless microphone demo (ideal):

Sennheiser CX True Wireless microphone demo (street):

Sennheiser CX True Wireless review: the verdict

Sam Smart / Android Authority

The Sennheiser CX True Wireless isn’t perfect, with issues in the high range of audio, concerns about battery life and a lack of features like wireless charging and ANC making them not great. If you want the perfect thing for a specific use like exercising, commuting, or taking phone calls, this isn’t it.

The Sennheiser CX True Wireless are affordable earplugs that can do a little bit of everything.

However, these earbuds do enough things well enough that you can’t quite beat them. They sound nice, have solid insulation performance, a good app and that IPX4 rating is great. If you’re looking for something that can do a little bit of everything, these might be worth considering.

Sennheiser CX True Wireless Earbuds

These Sennheiser earbuds offer premium features at a more reasonable price.

The CX True Wireless earbuds use Bluetooth 5.2 and support multiple Bluetooth codecs, so everyone can enjoy consistent, high-quality audio. These earbuds look stylish and sound great.

What Are the Best Sennheiser CX True Wireless Alternatives?

Sam Smart / Android Authority

If you really like the idea of ‚Äč‚Äčthese earbuds, but wish they had active noise cancellation, Sennheiser has updated its CX line with the Sennheiser CX Plus True Wireless ($179), which has a similar design, Bluetooth 5.2, and expanded high-end performance. codec also support.

If you’re looking for true wireless earbuds with great battery life, the Samsung Galaxy Buds Plus ($149) can play nearly 12 hours on a single charge, and they’re easy to find on sale. If you want something that falls between the Buds Plus and Buds Pro, the Samsung Galaxy Buds 2 ($149) might be worth considering.

Sam Smart / Android Authority

If you want a great pair of workout earbuds, the Jaybird Vista 2 ($149) has silicone earhooks to keep the earbuds in place, as well as active noise cancellation. And if you’d rather be extra aware of your surroundings, the Sony Linkbuds ($179) have a ring-shaped earbud to keep outside noises in like normal, although they don’t sound great.


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