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Sennheiser CX Plus review: Flagship level sound with a LOW PRICE

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The Sennheiser CX Plus keeps the Sennheiser CX’s superior sound quality while adding performance enhancements. The Sennheiser CX Plus offers premium quality and surprisingly good noise cancellation for a fraction of the price of the AirPods Pro.




Colors: Black; white


Battery life (rated): 8 hours (ANC on); 9 hours (ANC off); 24 hours (charging case)


Connectivity: Bluetooth 5.2


Water resistance: Yes (IPX4 rated)


Size: 2.3 x 1.3 x 1.6 inches (charging case)


Weight: 0.21 ounces (per bud); 1.23 ounces (charging case)



Sennheiser CX Plus review: Design and comfort

Sennheiser CX Plus Design


Sennheiser’s design idea of minimal detail and neutral colours is carried over to the CX Plus. It’s a classy, subtle appearance that appeals to executives. The construction is sturdy, and the internals are protected by a hard plastic casing. The buds are sweat and splash resistant thanks to their IPX4 certification.

Sennheiser CX Plus design

The tiny rectangular charging case, which looks great on any surface, is one of my favourites. At 1.6 ounces, it’s a light carry (both buds and case). The matte finish and the emblem on top are lovely accents. The buds are stationed in their charging holes and the lid is kept sealed tight by strong magnets.


Fit was stable. The ear tips created a tight seal that kept the buds locked in. Slippage wasn’t an issue when moving quickly around the house or during jogs. Having several different sized tips at your disposal helps determine the best fit for your ear shape.



Sennheiser CX Plus review: Controls and digital assistant

  • Spot-on Touch accuracy
  • Tri-digital assistant support

Sennheiser created a full set of commands that may be activated using various input motions. Most of the functions, including as playing, call management, volume, digital help, and listening mode activation, are handled by the touch controls. Individual single/double/triple-tap and long-hold gestures can be assigned using the companion app. There’s also a Smart Pause feature that automatically pauses music when the buds are removed, as well as Siri, Google Assistant, and Bixby integration.

Sennheiser CX Plus Controls


Everything functions flawlessly. The touch panels are extremely responsive, and multi-tap commands are rarely misinterpreted. On-ear detection is extremely accurate. All of the digital assistants perform flawlessly to answer verbal questions; the microphones are clear and pick up every syllable spoken.


Sound quality

  • Customizable EQ doesn’t enhance sound much
  • aptX Adaptive for hi-res streaming
  • Balanced, accurate sound


The sound quality of the CX Plus will delight audiophiles and music fans alike. Clarity and depth are excellent, and the frequency spectrum is expertly handled to deliver a well-balanced dosage of deep lows, rich mids, and detailed highs to your ears.

Sennheiser CX Plus Sound Quality


Calvin Harris’s “Blame it on me” has a powerful kick beat that blended well with the sensuous synths, creating a rhythmic and energetic listen. Clean vocals and adlibs blended nicely over the bouncy electric keyboard loop on melodically groovy choices like Nipsey hustle’s “Blue Laces 2” where the clean vocals and adlibs blended perfectly over the lively electric keyboard loop.

When I’m testing an audio device, I always start with symphonic recordings because they’re a wonderful way to gauge highs. The CX Plus did not let us down. From the start, I was thumping my toes to Latin favourites like the Fania All-Stars’ “Ponte Duro,” which reproduced percussive sounds (cymbals, percussion, piano) at the same level as the flagship Momentum True Wireless 2. Even the live audience was audible and added to the performance’s immersive atmosphere.

The Equalizer on the CX Plus allows you to customise your sound by manually altering three bands: bass, mids, and treble. It works great for lowering lows and mids, but not so well for raising them. Luckily, the Neutral EQ (default) is sonically effective, and the DSP stabilizes volume no matter what adjustments are made.

Sennheiser, unlike Sony or Anker, does not provide you with a variety of presets. You only have three options (Podcast, Movie, and Bass Boost). Each one has a minor effect on the sound. Bass Boost is meant to be used with all of the presets, not just one, which is a little strange.

The buds support AAC, SBC, apt X, and aptX codecs, with the latter being a premium capability not found in many wireless earbuds. All this means is that all programmes will have a more dynamic, fast-streaming experience (e.g., music, gaming, video).

Active noise cancellation

The Momentum True Wireless 2 were an above-average pair of wireless active noise cancellation earphones. With modest expectations, I was pleasantly surprised by the CX Plus’s increased noise cancelling, which is better at handling higher frequencies than its big brother.

Sennheiser CX Plus ANC

When working in the backyard, blocking out the loud noises made by landscaping tools (e.g., hedge trimmer, lawnmower) was a dream come true. Other distractions, such as aeroplanes flying overhead, birds tweeting, and a portable speaker, had no effect on my productivity. Indoors was just as satisfying, as it kept the chatter around the kitchen table to a bare minimum and my toddler’s constant wailing outside of the play area to a bare minimum.

Transparent Hearing allows you to hear what’s going on around you and is an essential tool for everyone who wants to be more aware of their environment. I could distinguish individual noises and pinpoint where automobiles were coming from while walking down the street with the function turned on. The clear vocals made it easier to connect with the missus and listen in on other people’s discussions.

Special features and app

  • App that is both stylish and user-friendly.
  • Quite a few features
  • Call quality adjuster is a useful tool.
Sennheiser CX Plus Special Features and App

All of the CX Plus’ additional capabilities are accessible through Sennheiser Smart Connect. The appealing homescreen welcomes you with EQ, Transparent Hearing, and Connections (a list of devices previously linked to the buds) menu options, as well as battery indications for each bud.

The settings page hides a lot of functions; select the cogwheel icon on the upper right to access them. Control customisation, ANC, auto-power off, smart pause, and sidetone to change the audible feedback of your voice during calls may all be found here.

You’ll have enough to work with, and firmware upgrades will allow Sennheiser to incorporate new features as they become available.

Call quality and connectivity


The Momentum True Wireless 2 and CX 400BT weren’t terrific calling headsets, but the CX Plus is deserving of a spot in our list of the best headphones with a microphone for voice and video conversations. Conversations are clear and powerful, and Sennheiser’s mic arrays do an excellent job of cancelling out background noise. During brief conversations, my wife was surprised that she couldn’t hear traffic in the background. When speaking outside, I received feedback that my voice sounded harsh, but folks on the other end of the line could understand what I was saying.

Bluetooth 5.2 works without a hitch. The initial pairing process is quick, and auto-connect is even faster; the buds connect to your most recently recognised device instantly. The range is impressive, reaching up to 60 feet, about double that of conventional wireless earphones.

Sennheiser could have added Google Fast Pair and multipoint technology (pairing to two devices at the same time), but they were left off the spec sheet.

Battery life and charging case

  • Better battery life than the AirPods Pro
  • ANC playtime is lower than advertised
  • No wireless charging

The CX Plus is rated for 8 hours with ANC on, but when you include in high volume and streaming, it’s really 6 hours – I got up to three days of moderate use (2 hours daily) before recharging. Disabling ANC allows you to use the device for up to 9 hours.

The charging case will last up to 24 hours, which is the industry-average period set by the AirPods’ charging case. One hour of use comes with a 10-minute quick charge.

Wireless charging is a thing of the past.


The Sennheiser CX Plus is up against fierce competition, but  it’s a great deal and one of the best models at the price. They’re a tempting package since they have articulate, high-quality sound, long playtimes, effective ANC, and trustworthy connectivity.

Not everyone will be happy to deal with the terrible fit, subpar EQ, and lack of modern features (e.g., wireless charging, multipoint technology). Those who can will get a lot of use out of these buds; otherwise, you might want to look into the AirPods Pro or the Jabra Elite Active 75t.



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