Sennheiser CX Plus True Wireless Review

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Sennheiser’s latest affordable true wireless buds make a solid impression in terms of feature set and pattern. The audio quality is pleasing, although rivals arguably take the border here and dissonance counterfoil isn’t the most powerful, either.


  • Splendid condolement and fit
  • Well-featured app and specification
  • Warm, weighty sound


  • ANC isn’t the most convincing
  • Brusque on detail and clarity


  • UK
    RRP: £129.99
  • USA
    RRP: $179.99
  • Europe
    RRP: €159.90
  • Canada
    RRP: CA$229.95
  • Australia
    RRP: AU$259.95

Key Features

  • Bass Boost
    Extend low frequencies with bass EQ

  • Customisation
    Customise touch controls through the Smart Command app

  • ANC
    Noise cancelling and transparency modes supported


The CX Plus true wireless buds are the third entry in Sennheiser’s affordable CX range, earning the ‘Plus’ moniker for the addition of noise cancellation.

The earbuds that kicked off the range – the CX 400BT – were impressive, delivering great audio at a cost with mass entreatment. The follow-up CX True Wireless improved in some ways, but so had the contest, with their lack of noise cancellation making those buds a less compelling choice compared to close-price rivals.

But not long after the CX True Wireless’s arrival we take the CX Plus True Wireless, a model with virtually the same specs merely boasted racket counterfoil. The idea of launching buds with dissonance cancelling then before long afterwards looks odd, but it makes sense for Sennheiser to catch a foothold in an emerging area of the truthful wireless market.


  • Same tried-and-trusted design
  • Excellent fit and comfort
  • Responsive touch panels

The CX Plus Truthful Wireless look identical to the CX True Wireless, which looked identical to the CX 400BT. If you were to line up these earbuds in an identity parade, you’d exist hard-pressed to tell one from the other.

But as I said virtually the CX Truthful Wireless, ‘if information technology ain’t broke, don’t fix it’. Sennheiser has found a design that bears fruit, the earbuds slotting into the ear via a twist and lock mechanism. The touch panels are superbly responsive, comfort remains excellent, and the earbuds’ seal consistently keeps the outside at bay.

Sennheiser CX Plus True Wireless earbuds on rock ledge in garden

For a better fit, Sennheiser supplies adapters (ear tips) in XS, Southward, Thou and 50 sizes, while the charging case is exactly as earlier, with an easily identifiable LED indicator that denotes the battery’s status. The choice over finishes comprises the usual Sennheiser staples: black or white.


  • ANC doesn’t add much
  • Well-featured app
  • Solid battery life

The official toll gap between the CX True Wireless and the CX Plus is £10, quite a small surcharge to pay for agile noise cancellation. Since both earbuds accept been on sale that gap as only widened – at the fourth dimension of review, it’s as much equally £45 in some places. This gives any potential customer a bit more to think almost.

And the racket counterfoil could be a deciding factor to sway between one or the other; but, truth be told, the CX Plus apply of feed forward noise counterfoil tech (which only blocks audio from coming in) is unemphatic. Information technology builds on the excellent passive isolating characteristics of the Plus’ fit and seal, simply doesn’t add much on top of it. Switching ANC on and off shows there’south footling divergence aside from a change in tone of the cancellation.

That said, the noise-isolating properties of the design are already then good that the racket cancellation doesn’t demand to reach much to articulate out ambient noise. Merely then that may also make the CX Truthful Wireless more appealing in low-cal of their current cost.

Sennheiser CX Plus True Wireless in front of case

And so think of the ANC as more of a sprinkle on pinnacle of the excellent passive noise-isolating cake. There is at least no discernible change in tone with ANC practical, and the Transparency mode is proficient, opening up for greater awareness of the surrounding environment. Here, too, the audio signature of the CX Plus is maintained.

Of all Sennheiser’due south CX earbuds, the Plus are the virtually competitively stacked for features. They’re compliant with the latest Bluetooth standard in v5.two, and support audio streaming codecs all the manner to aptX Adaptive. The force of the CX Plus’ bespeak has been consistently good, and bated from a few stutters at the beginning of testing, it’southward been an improvement over the CX Truthful Wireless.

Battery life is viii hours per earbud and 24 in total, which is downward on the previous model (nine and 27). While at that place’s no wireless charging support, a quick accuse of x minutes provides another hr of playback. Compare it to similarly priced efforts from Beats and Cleer Audio, and these buds outlast the Beats by some altitude, only lose to the Cleer in a similar fashion.

Sennheiser CX Plus True Wireless Smart Control app customisation features

The Smart Control app provides a heap of features. Bear on controls tin be customised – the mapping for the controls differs from the CX Truthful Wireless, but I’d say this layout is the most logical and best yet. At that place’south also room to customise the audio with Bass Boost, Podcast and Motion-picture show modes.

You can create new EQ presets, too, toggle the iii-band blaster setting, as well as update the firmware and toggle the auto pause, ANC and auto-have call functions. The Sidetone slider allows for adjustment of how much of your ain voice you can hear during calls. When I reviewed the CX 400BT, I mentioned the app didn’t have every bit many features as it could have; the same tin can’t exist said now.

Other features include access to digital assistants (through the controls) and an IPX4 rating, which is skillful enough to guard against splashes of water and sweaty digits.

Sennheiser CX Plus True Wireless Smart Control app equalisation features

Audio quality

  • Warm, bassy sound
  • Not the almost precise of listens

The CX Plus Truthful Wireless pack the aforementioned 7mm TrueResponse transducer found in the CX True Wireless, and that’s as big a clue every bit any as to the Plus’ audio functioning. In short it’s good, but these Sennheiser buds yet lag behind their peers in some respects.

Sennheiser CX Plus True Wireless touch controls

The Plus have a sound that’s warm and weighty, big and open; but not as crisp in tone or as detailed as the Beats Studio Buds. Take Abel Korzeniowski’s Mother of Evil from the Penny Dreadful soundtrack, and the Beats Studio Buds‘ playback is cleaner and sharper with high-frequency tones, with more detail and improve separation between the various parts of the track. With the CX Plus, the edges of the string department of orchestra are coloured with a warm tone that diminishes their clarity and definition, where the Beats’ sharpness offers more precision.

In a nutshell, the Plus’ tuning still retains that shine if rather diffuse and dense soundstage of the previous CX model and that means in that location’s not as much particular. That warmth also makes them languid in terms of any dynamic dexterity and rhythmic agility, which was near obvious in energetic tracks such as Prince’s Permit’due south Go Crazy.

Sennheiser CX Plus True Wireless housing and eartips

Yet, in that location’s a good time to be had in the CX Plus’ company. They treat vocals well: the dulcet tones of Nina Simone in Wild is the Air current are full of character, her soft and soothing vocalism reaching a whisper that the Sennheiser CX Plus communicate well.

And they have the border on true wireless around this price, with their command over the lower end of the frequency spectrum. Bass is delivered with weight and depth, and plugging in the Bass Boost underpins that with more than impact and a slightly wider soundstage, besides. Timing is decent in a track such as Escape from Mad Max: Fury Road, the CX Plus stringing together the various elements neatly every bit the runway slowly becomes more complex. It’southward a sound that’s pleasant and aggregable, but in terms of precision they remain off the pace at this toll.

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Should y’all buy it?

You love that bass
The CX Plus deliver plenty of weighty bass if that’s what yous like…

Yous desire a sound that’southward more precise
…but that bass does come up at the cost of overall detail and clarity.

Final Thoughts

Despite the ‘Plus’ tag, information technology’due south a case of concern equally usual for the Sennheiser CX Plus True Wireless. The noise cancellation brings small benefits in immigration environmental noise, but it isn’t as suppressive every bit other earbuds around this toll. Still, the feature set is one of the best for the money, the level of customisation on offer is excellent, and the sound quality is rich and pleasing – simply their rivals offer more convincing precision.

So the Sennheiser CX Plus True Wireless are another solid aspirant into the affordable ANC true wireless grab-bag, but no effort has reached out and taken the crown nonetheless. A little more operation from the next earbuds could get a long way in this battle.

How we test

We exam every headphones we review thoroughly over an extended period of time. We utilise industry standard tests to compare features properly. We’ll always tell you what nosotros discover. We never, ever, accept coin to review a product.

Find out more than about how we exam in our ethics policy.

Tested over several weeks

Tested with real world use

Tested with music streaming services

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How many hours of battery practise the Sennheiser CX Plus True Wireless offer?

Eight hours per earbud and 24 hours in full with the charging instance.

Do the Sennheiser CX Plus Truthful Wireless accept ANC?

Yeah, the CX Plus characteristic active noise cancellation technology and they’re the only models in the CX range to practice and then.

Full specs


United states RRP





IP rating

Battery Hours

Fast Charging



Release Date

Model Number

Audio Resolution

Driver (southward)

Racket Counterfoil?



Frequency Range

Headphone Blazon

Voice Banana

Sennheiser CX Plus Truthful Wireless










47 G




aptX Adaptive

7mm TrueResponse transducer


Bluetooth v.two

Blackness, White

5 21000 – Hz

True Wireless

via touch controls

Jargon buster


Bluetooth – named after 10th-century Danish rex Harald Bluetooth who united Denmark’s tribes into a single kingdom – is a method of wireless transmission that allows for the exchange of data betwixt devices over brusk distances.


Qualcomm’south aptX codec can support higher quality sound than Bluetooth alone.


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