Audio T Verdict
The Sennheiser ACCENTUM True Wireless bring many of the features people actually want from modern wireless earbuds into a more accessible Sennheiser package. You get the company's 7mm TrueResponse dynamic drivers, Hybrid Active Noise Cancellation, Transparency Mode, Bluetooth 5.3, aptX support and extensive adjustment through the Smart Control Plus app.
Comfort has clearly been given plenty of attention too. The ergonomic shape was developed using extensive in-ear research, with four sizes of silicone ear tip supplied to help achieve a secure fit. Add up to 28 hours of total listening, Qi wireless charging, USB-C, IP54 splash resistance and independent left or right earbud operation and these are very easy earbuds to live with.
If you want proper noise isolation and a secure in-ear fit rather than the deliberately open presentation of the ACCENTUM Open, the ACCENTUM True Wireless are the more obvious choice.
Sennheiser ACCENTUM True Wireless Earbuds
The Sennheiser ACCENTUM True Wireless combine Sennheiser's TrueResponse driver technology with Hybrid Active Noise Cancellation and an ergonomic in-ear design developed for comfortable everyday listening.
Bluetooth 5.3 provides the wireless connection, with support for SBC, AAC, aptX and LC3 codecs. Bluetooth LE Audio and Auracast support add newer wireless functionality, while the Sennheiser Smart Control Plus app provides access to EQ, Sound Check, sound personalisation and other settings.
Battery life extends to as much as eight hours from the earbuds with ANC switched off, or six hours with ANC operating, while the charging case increases total available listening time to as much as 28 hours.
- True wireless in-ear earbuds
- 7mm TrueResponse dynamic drivers
- Hybrid Active Noise Cancellation
- Transparency Mode
- Bluetooth 5.3
- Bluetooth LE Audio support
- Auracast support
- SBC, AAC, aptX and LC3 codecs
- Customisable touch controls
- Sennheiser Smart Control Plus app
- 5-band equaliser
- Sound Check
- Sound Personalization
- Two microphones per earbud
- Independent left or right earbud operation
- Up to 8 hours listening from the earbuds
- Up to 28 hours total with charging case
- USB-C charging
- Qi wireless charging
- IP54 splash-resistant earbuds
- Four ear tip sizes supplied
Sennheiser TrueResponse Sound
At the heart of each ACCENTUM True Wireless earbud is a 7mm TrueResponse dynamic transducer.
This compact driver system is based around Sennheiser's established approach to single-driver earphones, avoiding the need to divide the audible frequency range between multiple miniature drivers.
The specified frequency response extends from 5Hz to 21kHz, with sensitivity rated at 107dB SPL at 1kHz and 1mW.
7mm Dynamic Drivers
The 7mm transducer is responsible for reproducing the complete musical signal.
A single full-range driver avoids introducing an electrical crossover between different drive units and gives Sennheiser direct control over the complete acoustic system.
Total harmonic distortion is specified at less than 0.08% at 1kHz and 94dB SPL.
Designed Around Real Ears
The shape of a true wireless earbud matters almost as much as its electronics because poor fit can affect both comfort and acoustic performance.
Sennheiser developed the ACCENTUM True Wireless ergonomic design using extensive in-ear research, aiming to provide a shape that sits naturally and securely in the ear for longer periods.
Four Ear Tip Sizes
Silicone ear adapters are supplied in XS, S, M and L sizes.
Choosing the correct size is important because the ear tip creates the acoustic seal between the earbud and ear canal.
A suitable fit can improve:
- Comfort
- Stability
- Bass response
- Passive noise isolation
- Active Noise Cancellation effectiveness
Getting the Best Fit
Do not automatically assume the same ear tip size is correct for both ears. Try the supplied sizes and choose the smallest tip that creates a comfortable, secure seal without excessive pressure. A poor seal can noticeably reduce bass and noise-cancelling performance.
Hybrid Active Noise Cancellation
The ACCENTUM True Wireless use Hybrid Active Noise Cancellation to reduce distracting environmental sound.
ANC is particularly useful against the more constant background noise encountered during:
- Train journeys
- Flights
- Bus travel
- Commuting
- Busy offices
- Public spaces
Because the earbuds already create a physical seal in the ear canal, passive isolation and electronic noise cancellation work together to reduce the amount of outside sound reaching you.
Transparency Mode
There are situations where you need the opposite of noise cancellation.
Transparency Mode uses the external microphones to make sounds around you more audible without requiring you to remove the earbuds.
This can be useful for:
- Station and airport announcements
- Short conversations
- Walking in busy surroundings
- Working around other people
- Remaining aware of activity around you
Adjustable Transparency
The Transparency Mode level can be adjusted through the Sennheiser Smart Control Plus app.
This gives you more control over how much of the outside world is mixed into your listening rather than simply providing one fixed transparency setting.
Sennheiser Smart Control Plus
The ACCENTUM True Wireless work with Sennheiser's Smart Control Plus app for compatible iOS and Android devices.
The app provides access to additional sound and operating settings, allowing the earbuds to be configured around your own preferences rather than relying entirely on the factory setup.
5-Band Equaliser
A built-in 5-band equaliser allows you to adjust the tonal balance.
This is useful if you prefer a little more or less bass, want to alter the midrange or would like to fine-tune the upper frequencies to suit your music and hearing.
Sound Check
Sound Check provides a guided way of finding an EQ setting you prefer.
Rather than requiring you to understand frequency bands or build an equaliser curve manually, the system helps narrow down your listening preferences through comparative choices.
Sound Personalization
Sennheiser also provides Sound Personalization through the Smart Control Plus app.
This creates a more individual listening profile based around your preferences, giving you another option alongside the conventional manual equaliser.
Bass Boost and Sound Modes
Preset options such as Bass Boost provide quick changes for listeners who would rather select an existing setting than spend time adjusting the equaliser manually.
You can therefore keep operation relatively simple or explore deeper sound adjustment depending on how much control you want.
Bluetooth 5.3
The ACCENTUM True Wireless use Bluetooth 5.3 Class 1 connectivity.
Supported Bluetooth profiles include A2DP, AVRCP, HFP, TMAP and PBP, covering conventional Bluetooth audio alongside newer Bluetooth LE Audio functions.
SBC, AAC, aptX and LC3
Codec support includes SBC, AAC, aptX and LC3.
The codec actually used during listening depends on the transmitting equipment and the Bluetooth mode it supports.
SBC provides broad Bluetooth compatibility, while AAC and aptX offer additional options for compatible devices. LC3 forms part of the newer Bluetooth LE Audio platform.
Bluetooth LE Audio
Alongside conventional Bluetooth Classic operation, the ACCENTUM True Wireless support Bluetooth LE Audio.
LE Audio introduces newer Bluetooth audio capabilities and uses the LC3 codec when operating with compatible equipment.
Auracast Support
Auracast is part of the newer Bluetooth LE Audio ecosystem and allows compatible devices to receive supported Bluetooth audio broadcasts.
Potential applications include public audio transmissions and other broadcast sources as the technology becomes more widely available.
Does My Phone Support Every Bluetooth Feature?
Not necessarily. Bluetooth codec, LE Audio and Auracast availability depend on the transmitting device, operating system, firmware and software support. The earbuds will still work with ordinary compatible Bluetooth equipment even where newer features are unavailable.
Customisable Touch Controls
Touch-sensitive surfaces on the earbuds provide access to common playback, call and voice-assistant functions.
The controls can be customised through the Smart Control Plus app, allowing the interface to be adapted to the functions you use most frequently.
Use Either Earbud Independently
The left and right ACCENTUM True Wireless earbuds can each operate independently.
You can switch between using one or both earbuds at any time.
This can be useful when:
- You want one ear completely free
- You are making a voice call
- You need greater environmental awareness
- One earbud is charging
- You simply prefer single-ear listening for speech content
Two Microphones per Earbud
Each earbud contains two MEMS microphones.
The microphone system uses beamforming and noise reduction to concentrate more effectively on your voice during compatible calls.
Microphone frequency response is specified from 100Hz to 10kHz.
Up to 8 Hours From the Earbuds
Sennheiser specifies up to eight hours of music playback from the earbuds with ANC switched off.
With Active Noise Cancellation operating, the specified figure is up to six hours under Sennheiser's stated test conditions.
Up to 28 Hours Overall
The charging case extends overall available music playback to as much as 28 hours.
This allows the earbuds to be topped up several times away from mains power rather than requiring a USB connection after every listening session.
Quick Charging
A full charge takes approximately 1.5 hours under normal charging conditions.
If you are short of time, a 10-minute charge can provide approximately another hour of music playback.
USB-C Charging
The charging case includes a USB-C socket for conventional cable charging.
A USB-C charging cable is supplied with the earbuds.
Qi Wireless Charging
The ACCENTUM True Wireless charging case also supports Qi wireless charging.
Place the case on a compatible Qi charging pad and it can recharge without connecting a USB cable directly to the case.
Wireless charging can take longer than wired charging, particularly depending on charger performance and ambient temperature.
IP54 Earbud Protection
The earbuds themselves carry an IP54 rating.
That means they are designed to provide protection against dust ingress and splashing water, making them suitable for everyday use in rain and for non-water sports or exercise.
IP54 Does Not Mean Waterproof
Do not submerge the ACCENTUM True Wireless, wear them in the shower or rinse them under running water. If the earbuds become wet, dry them before returning them to the charging case and never charge them while wet. The charging case itself is not splash resistant.
Compact Charging Case
The earbuds and charging case together measure approximately 49.45 x 51.72 x 28.95mm.
The complete system weighs approximately 52g, with each individual earbud weighing around 5.5g and the charging case approximately 41g.
That keeps the complete package compact enough for a pocket or small section of a bag.
ACCENTUM True Wireless or ACCENTUM Open?
ACCENTUM True Wireless
- Sealed in-ear design
- Silicone ear tips
- 7mm TrueResponse drivers
- Hybrid ANC
- Transparency Mode
- Bluetooth 5.3
- aptX and LC3 support
- Smart Control Plus app
- Qi wireless charging
- Up to 28 hours total playback
- IP54 earbuds
- Best for isolation and immersive listening
ACCENTUM Open
- Open-fit design
- No silicone ear tips
- 11mm dynamic drivers
- No Active Noise Cancellation
- Natural environmental awareness
- Bluetooth 5.3
- SBC and AAC support
- No app required
- USB-C charging
- Up to 28 hours total playback
- IPX4 earbuds
- Best for open, non-isolating listening
Which ACCENTUM Earbuds Should You Choose?
Choose the ACCENTUM True Wireless if you want stronger isolation, Hybrid ANC, deeper sound adjustment and a secure sealed in-ear fit.
Choose the Sennheiser ACCENTUM Open if you dislike silicone tips, want a more breathable fit or need to remain naturally aware of everything happening around you.
How Do They Compare With MOMENTUM True Wireless 4?
The ACCENTUM True Wireless provide many of Sennheiser's core wireless-earbud features at a lower level in the range, including TrueResponse drivers, ANC, Transparency Mode, app-based sound adjustment, Bluetooth LE Audio and Auracast support.
The MOMENTUM True Wireless 4 step things up with Adaptive ANC, aptX Adaptive and Lossless support, an additional microphone per earbud and a larger-capacity charging system.
Useful for Commuting
The combination of passive in-ear isolation and Hybrid ANC makes the ACCENTUM True Wireless well suited to regular commuting.
Transparency Mode means announcements or conversations can be heard when needed without removing the earbuds completely.
Useful for Travel
Compact earbuds are particularly convenient when luggage space is limited.
The charging case provides up to 28 hours of overall listening, while both USB-C and Qi charging give you more flexibility when away from home.
Useful for Work
Dual microphones in each earbud support voice calls, while ANC can help reduce distractions in shared working environments.
The ability to use either earbud independently is also useful during longer periods of speech or conference calls.
Useful for Exercise
The secure in-ear fit and IP54 rating make the ACCENTUM True Wireless suitable for non-water sports and everyday exercise.
They are not intended for swimming, showering or any activity involving submersion.
Who Are the ACCENTUM True Wireless For?
- Listeners wanting compact true wireless earbuds
- People wanting Hybrid Active Noise Cancellation
- Commuters
- Travellers
- Office and working-from-home use
- Listeners wanting an adjustable EQ
- Users wanting aptX support
- Compatible Bluetooth LE Audio users
- Listeners interested in Auracast
- People wanting Qi wireless charging
- Listeners wanting a secure sealed in-ear fit
- People wanting independent single-earbud operation
Who Are They Not For?
- Listeners who dislike ear tips sitting in the ear canal
- People who want to remain naturally aware of their surroundings at all times
- Anyone looking specifically for an open-fit earbud
- Swimmers or users requiring waterproof earbuds
- Listeners wanting the additional features of MOMENTUM True Wireless 4
Key Features
- Sennheiser ACCENTUM True Wireless
- True wireless stereo earbuds
- Ear-canal coupling
- Ergonomic in-ear design
- 7mm TrueResponse dynamic drivers
- 5Hz to 21kHz frequency response
- 107dB SPL sensitivity
- Less than 0.08% THD
- Hybrid Active Noise Cancellation
- Transparency Mode
- Adjustable Transparency Mode
- Bluetooth 5.3
- Bluetooth Class 1
- Bluetooth Classic support
- Bluetooth LE Audio support
- Auracast support
- SBC codec
- AAC codec
- aptX codec
- LC3 codec
- A2DP profile
- AVRCP profile
- HFP profile
- TMAP profile
- PBP profile
- Customisable touch controls
- Smart Control Plus app support
- 5-band equaliser
- Sound Check
- Sound Personalization
- Bass Boost
- Two MEMS microphones per earbud
- Beamforming voice pickup
- Independent left/right earbud operation
- Up to 8 hours playback with ANC off
- Up to 6 hours playback with ANC on
- Up to 28 hours total playback
- Approximately 1.5-hour full charge
- 10-minute quick charge
- Approximately 1 hour playback from quick charge
- USB-C charging
- Qi wireless charging
- IP54 earbuds
- 5.5g per earbud
- 41g charging case
- Approximately 52g complete system
- XS, S, M and L ear tips supplied
- Black and White Audio T options
Frequently Asked Questions
Are the Sennheiser ACCENTUM True Wireless noise cancelling?
Yes. They use Hybrid Active Noise Cancellation.
Do they have Transparency Mode?
Yes. Transparency Mode allows more external sound through without requiring you to remove the earbuds, and its level can be adjusted through the Smart Control Plus app.
What size drivers do they use?
Each earbud uses a 7mm Sennheiser TrueResponse dynamic driver.
What is the frequency response?
5Hz to 21kHz.
What Bluetooth version do they use?
Bluetooth 5.3.
Which Bluetooth codecs are supported?
SBC, AAC, aptX and LC3.
Do they support aptX?
Yes, standard aptX is supported.
Do they support aptX Adaptive?
No. Sennheiser specifies standard aptX for ACCENTUM True Wireless. aptX Adaptive is available on models such as MOMENTUM True Wireless 4.
Do they support Bluetooth LE Audio?
Yes, with compatible transmitting equipment.
Do they support Auracast?
Yes. Auracast support forms part of their Bluetooth LE Audio functionality and requires compatible source or broadcast equipment.
Can I change the sound?
Yes. The Smart Control Plus app provides a 5-band equaliser, Sound Check, Sound Personalization and sound-mode options.
Can I use just one earbud?
Yes. Either the left or right earbud can be used independently.
Can I use one while the other charges?
Yes.
How many microphones are fitted?
There are two MEMS microphones in each earbud.
Can I use them for phone calls?
Yes. The microphone system uses beamforming and noise reduction for compatible calls.
How long does the battery last?
Sennheiser specifies up to eight hours from the earbuds with ANC switched off, up to six hours with ANC operating and up to 28 hours of total music playback when the charging case is included.
How long do they take to charge?
Approximately 1.5 hours for a full charge under normal conditions.
Do they support quick charging?
Yes. Approximately 10 minutes of charging can provide around one hour of music playback.
Do they support wireless charging?
Yes. The charging case supports compatible Qi wireless chargers.
Can I charge them with USB-C?
Yes. USB-C charging is supported and a cable is supplied.
Are the ACCENTUM True Wireless waterproof?
No. The earbuds are IP54 dust and splash resistant but must not be submerged, showered in or rinsed under running water.
Is the charging case waterproof?
No. Sennheiser states that the charging case is not splash resistant.
Can I use them in the rain?
Sennheiser states that the IP54-rated earbuds can be used in rain and all-weather conditions, provided they are dried before being returned to the charging case.
Can I use them for exercise?
Yes, for non-water sports and exercise. They are not intended for swimming or showering.
What ear tip sizes are supplied?
XS, S, M and L silicone ear tips are included.
How much does each earbud weigh?
Approximately 5.5g.
How much does the charging case weigh?
Approximately 41g.
What colours does Audio T offer?
Audio T lists the ACCENTUM True Wireless in Black and White.
Related Sennheiser Products and Audio T Guides
Why Buy Sennheiser ACCENTUM True Wireless From Audio T?
The right wireless earbuds depend on much more than specifications alone. Fit, isolation, noise cancellation and the way you plan to use them are all important, and Audio T can help you compare the ACCENTUM True Wireless with other Sennheiser models before you buy.
We can also advise on Bluetooth compatibility, earbud fit, Active Noise Cancellation, app setup and alternatives such as the open-fit ACCENTUM Open or higher-performance MOMENTUM True Wireless 4.
- Friendly headphone and earbud advice
- Sennheiser model comparisons
- ACCENTUM range guidance
- Bluetooth compatibility advice
- Active Noise Cancellation advice
- In-ear fit guidance
- Smart Control Plus app advice
- Travel and commuting recommendations
- Working-from-home headphone advice
- Alternative wireless earbud recommendations
- Ongoing after-sales support
Contact your local Audio T store if you would like help choosing the right Sennheiser earbuds for the way you listen.