Sennheiser CX Plus

ANC, 8 h, Wireless
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Product details

The CX Plus True Wireless exceeds all sound expectations, with noise cancelling, effortless smart operation and a sleek design for ultimate comfort. Independent earphone use: This convenient feature allows
you to use the left and right earphones individually or as a pair. German-made 7mm TrueResponse dynamic transducers deliver Sennheiser's signature sound quality. With a playback time of 8 hours. Up to a total battery life of 24 hours via the charging box, the CX True Wireless provides an all-day audio experience - and in any environment, thanks to passive noise cancellation and ergonomic design for a secure fit in the ear. Bass Boost - More intense bass can be activated with special EQ preset via the Smart Control app.

Key specifications

Application range
Business, 
General, 
Travel
Equipment + Functions
Microphones, 
True Wireless
Headphone type
Bluetooth headphones, 
In Ear Headphones
Signal transmission
Wireless
Audio Connections
1 x USB-C, 
Jack 3.5mm (1x)
Noise cancelling
ANC
Isolation
Closed
Item number
16812714

General information

Manufacturer
Sennheiser
Category
Headphones
Manufacturer no.
509188
Release date
28.9.2021

Colour

Colour group
Black
Exact colour description
Black

Material

Specific material description
Putos

Application range

Operating system compatibility
Android
Headphone area of use
Business, 
General, 
Travel

Headphone properties

Headphone output
Stereo
Noise cancelling
ANC
Headphone features + functions
Microphones, 
True Wireless
Peripheral signal transmission
Wireless

Headphone type

Headphone type
Bluetooth headphones, 
In Ear Headphones
Fit
In Ear
Isolation
Closed
Driver diameter
7 mm
Durability
Splashproof
Protection type (IP code)
IPX4
Converter principle
Dynamic
Membrane size
7 mm

Audio properties

Frequency range
10 - 21000 Hz
Sensitivity
107 dB

Connections

Audio Connections
1 x USB-C, 
Jack 3.5mm (1x)
Connections base/transmitter
USB-C

Bluetooth features

Bluetooth version
5.2
Bluetooth feature
AAC, 
aptX, 
SBC
Bluetooth profiles
A2DP, 
AVRCP, 
HFP

Power supply

Power supply
Rechargeable battery operated

Battery properties

Battery type
Li-ion
Battery life
8 h
Capacity
420 mAh
Charging time
1.50 h
Charging input
USB-C

Product dimensions

Weight
12 g

Package dimensions

Length
18 cm
Width
12 cm
Height
5 cm
Weight
188 g

Reviews & Ratings

Statutory warranty score

How often does a product of this brand in the «Headphones» category have a defect within the first 24 months?

Source: Galaxus
  • 82.B&O
  • 82.Defunc
  • 82.Sennheiser
  • 82.Teufel
  • 86.SBS

Statutory warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Galaxus
  • 64.Shokz
  • 65.Hifiman
  • 66.Sennheiser
  • 66.Suunto
  • 68.AKG

Return rate

How often is a product of this brand in the «Headphones» category returned?

Source: Galaxus
  • 72.Technics
  • 72.Timekettle
  • 76.Sennheiser
  • 77.Music Sound
  • 77.Shure
Source: Galaxus

Translation: machine translated
Overall ratingVery good90/100
Without ratingNo rating
Spiegel TestsTrue-Wireless-HeadsetsReleaseApril 2024

This is how they sound: The Plus version of the CX True Wireless not only looks similar to the cheaper version without the "Plus", but also sounds similar. However, I can hear a little more transparency and openness here. In combination with the pleasant wearing comfort, they are also suitable for longer listening sessions...

Very good82/100
Rank 2 out of 22Stiftung WarentestBluetooth-Kopfhörer im Test - Kopfhörer mit gutem Sound und AkkuReleaseMarch 2022

The Bluetooth headphone test provides results for 240 headphones with and without earpieces. Which ones sound strong, have good batteries and no harmful substances. New in Stiftung Warentest's headphone comparison: 26 current in-ear and boom headphones. Among them are models from Apple, JBL, Samsung and Sennheiser...

Very good95/100
PCgo Logo
Rank 2 out of 4PCgoHightech Stöpsel neuester BauartReleaseFebruary 2022
  • PositiveSennheiser-typical, wonderfully balanced sound
  • PositiveVery long endurance
  • PositiveGood and tight fit in the ear
  • PositiveSimple and clear operation
  • PositiveEffective passive attenuation and responsive ANC
  • Positivedecent telephony acoustics
    Very good90/100
    CHIP OnlineSingle testReleaseJanuary 2022
    • PositiveBeautiful sound with good treble
    • PositiveStable ear support
    • PositiveConfigurable touch control
    • PositiveHigh runtime
    • PositiveIPX4 and ear detection
    • NegativeDistant vocal presence
    Very good95/100
    PC Magazin Logo
    Rank 2 out of 4PC MagazinIn-Ear-Kopfhörer - Hightech-Stöpsel neuester BauartReleaseJanuary 2022
    • PositiveSennheiser-typical, wonderfully balanced sound
    • PositiveVery long endurance
    • PositiveGood and tight fit in the ear
    • PositiveSimple and clear operation
    • PositiveEffective passive attenuation and responsive ANC
    • Positivedecent telephony acoustics
      Very good90/100
      connect Logo
      Rank 2 out of 4connectHightech-StöpselReleaseDecember 2021
      • PositiveSennheiser-typical, wonderfully balanced sound
      • PositiveVery long endurance
      • PositiveGood and tight fit in the ear
      • PositiveSimple and clear operation
      • PositiveEffective passive attenuation and responsive ANC
      • Positivedecent telephony acoustics