Part of what makes the sound quality of the CX True Wireless Earphones so strong is the customisation you get from the Sennheiser Sound Control App. The app lets you manage the earbuds firmware, customise the touch controls and access an equaliser so you can adjust how they sound to your liking. One feature which comes into focus here is active noise cancellation, but in most cases, earphones with this feature only come in the $200 price range.
The Sennheiser CX True Wireless Buds are an excellent choice for those looking to get a quality pair of earphones. Though they have features that are missing when compared with their more expensive counterparts, such as the Sony WF1000XM4S and Master Dynamics MW08S series wireless headphones, these buds still offer high-quality sound for less. It’s hard to imagine a person not wanting the features of active noise cancellation and larger earphones. But, if you can live without these essential qualities, it’s possible you will find more joy in listening with CX True Wireless Buds headphones for their lower price point.
Another thing you can do is save settings from previous Sennheiser units. This didn’t appear with our review units as we didn’t have any saved, so we just created a new one. While these buds don’t offer benefits such as active noise cancellation, they have a minimalist quality that is strong where it matters: excellent sound, good battery life, and solid headset performance.
These high-quality wireless earphones, as with most Sennheiser products, place their reputation on their tonal signature and the surprising depth of bass that emerges in their tiny bodies. To make the earbuds fit all ear shapes and sizes, the ear tips come in four sizes (including the X). The buds fit well and become dense and sealed when using the larger of the four tip sizes. The earphone stand is small enough to sit in my ear, and I had no problem wearing them for hours.
Audio sounded fantastic with these earbuds, with solid volume, crisp and clear tones, solid bass and reliable performance. The headphones are compatible with Bluetooth 5.2 and support AAC, APTX and SBC Bluetooth codecs. The audio quality was impressive enough for the price.
Available in matte black or white, the earphones feature a large square case with an engraved Sennheiser logo. The Sennheiser CX True Wireless case is made from plastic, but does not feel cheap: the headphones snuggle into their slots held by magnets and tiny pegs for charging.
The new Sennheiser buds, compared to the CX 400BT, offer an improved battery life of 9 hours for the earphones itself and an additional 18 hours for a single charge with the housing that increases it to 27 hours. For reference, Sennheiser’s more expensive Momentum True Wireless 2 earbuds provide 28 hours of battery life while Apple’s AirPods Pro wireless earbuds offer 24 hours of charging time in the case. The CX True Wireless is no means class-leading, but many wireless headphones offer over 40 hours of playback per day and it’s a shame that the case doesn’t offer more charging, especially considering its size.