Since Apple launched its revolutionary AirPods back in December 2016, there has been a steady stream of truly wireless in-ear headphones from a host of manufacturers, including B&O, Bose, Motorola, Onkyo and Sony.
All have added their slightly different twist on the design, brought different sets of features, and had varying degrees of success with their models.
But what about Sennheiser? The headphone giant has been observing quietly from the sidelines like a waistcoat-clad Gareth Southgate, scouting out rivals and fervently making notes as it plans how to approach this particular headphone category.
Now the time has come for the Sennheiser Momentum True Wirelesses to make their world debut. But will they play a blinder, or end up sidelined on the bench?
If there’s a feature you want from your headphones, the Momentum True Wirelesses probably have it. The spec list is so long it’s hard to know where to start. Battery life is a decent four hours, which compares to the Sony WF-1000Xs’ three hours and the capable Bose SoundSport Frees’ five.
As is the trend for truly wireless in-ears, the Sennheisers come with their own carry case that doubles as a docking and charging station. This compact, fabric covered box charges via USB-C, with the earpieces dropping into secure magnetic slots where they start charging via their gold contacts.
The pairing process for these wireless in-ear headphones starts as soon as you remove them from the case. They’re immediately discoverable, and if you ever need to pair them with another device, simply press and hold on the outside of both earpieces to restart the process.
Sennheiser Momentum True Wireless tech specs
Bluetooth Yes 5.0, aptX, aptX Low Latency
Battery life 4hrs (+8 from charging case)
A small LED light on the rear indicates the level of charge in the box – green for more than 50 percent, yellow for less than 50 percent and red for empty. It’s a small detail, but handy for quickly checking if you have enough juice to charge them.
At full capacity, the case provides enough power for two additional charges, which amounts to a total of 12 hours of battery life. The headphones need roughly an hour and a half of charging to reach full power from empty.
With some truly wireless in-ears, it’s difficult to monitor how much charge is left, but that’s not the case with the Sennheiser Momentum True Wireless. If you power up the Sennheiser Smart Control app (compatible with iOS 11.0 and above and Android 7 and above) you can see an exact percentage of power remaining in each earpiece. This attention to detail means you should never get caught out.
The Sennheisers’ armoury includes what it describes as ‘two-mic beamforming’ which it claims improves the audibility of your chat during phone calls.
They also prefer noise isolation to noise-cancellation and do a good job of blocking out all the various rumblings on the daily commute.
If you’d prefer to hear more of what’s going on around you, turn on the Transparent Hearing feature, either by selecting it in the app, or double tapping on the surface of the right earpiece.
You can set it so the headphones either stop playing or continue to play when activated. It works fine with the former setting, but its effectiveness with the latter depends on your music – the louder it is, the less the feature works.
Imagine trying to put a Rolo in your ear – that’s how it feels manoeuvring the small round earpieces into place. We find short listening bursts of up to an hour fine, but they are occasionally a little uncomfortable over a prolonged period.
The Momentum True Wirelesses boast a clean, uncluttered look with not a single button in sight. Sennheiser has achieved this by turning the metallic rings on the exterior surface of the buds into touch sensitive buttons. Very clever.
The left ring controls playback, with a single tap to play and pause, a double tap to skip forward and a triple tap to skip backwards. A long press and hold will turn the volume down, while doing the same on the right ring bumps the volume up.
A single tap on the right brings your virtual voice assistant (Google or Siri) to life, while a double press enables or disables the Transparent Hearing feature.
Having all these controls at your fingertips sounds great in theory, but the reality is a little different. Playing, pausing and changing volume work well enough. The headphones react quickly and the volume doesn’t jump up and down unpredictably.
Issues arise when you want to skip tracks and activate the Transparent Hearing mode. It’s quite tricky to nail multiple taps, and if your finger doesn’t quite hit the spot you’ll find yourself pausing when you want to skip forward or skipping forward when you want to skip back. We also found ourselves activating Siri on a number of occasions when we were trying to turn the Transparent Hearing on and off.
Sennheiser’s Smart Pause feature means that you can just remove one earpiece and music will automatically stop. Put the earpiece back and your music picks up again. Again, this is a neat feature we haven’t come across in truly wireless in-ears before. The only issue is if you take them both out and place them near one another the music starts playing again. You need to keep them a certain distance apart.
So the execution isn’t perfect, but we admire Sennheiser’s ambition. We just hope the sound quality hasn’t taken a back seat – after all, these headphones are part of hugely successful Momentum range.
And on the whole, the Sennheiser Momentum True Wirelesses don’t disappoint.
Compared to the wired Momentum in-ears and Bluetooth Momentum Frees, they are a little calmer and leaner in the bass. These models have a slightly richer and fuller bottom end, but what the sound loses in weight it gains in balance and poise.
Play Björk’s Hyperballad and there still plenty of deep, probing bass to latch onto. There’s a good sense of spaciousness with clear and distinct layers of detail. Switch tact to Elton John’s Rocket Man and the piano, strings and vocal sound reassuringly warm and natural.
Harsher recordings with rough edges are treated fairly. They’re not glossed over but nor do they sound overly bright or uncomfortable.
Rivals such as the Sony WF-1000Xs still have the edge when it comes to outright musicality, capturing the galloping rhythm of Jamie T’s Sticks ‘n Stones more naturally. They display a sense of flair and fun that the Momentums can’t quite match.
Handling video and audio can be an issue for wireless headphones so we watch videos on an iPhone 8 Plus and MacBook Pro via YouTube, Netflix and BBC iPlayer. The Sennheisers pass with flying colours, presenting no obvious lip-syncing issues.
The range and stability of the Bluetooth signal is also impressive, with no problems with the signal breaking when wandering to the far corners of our office.
In many ways, it’s an impressive True Wireless debut from Sennheiser. The design is classy, they boast some useful features, battery life is good and so too is sound quality.
But the Sennheisers cost around twice as much as the class-leading and wonderfully musical Sony WF-1000Xs – and for their price, the user experience isn’t perfect. Any price reductions will make them a more appealing proposition, but for now, they don’t quite justify that elusive fifth star.
- Sound 4
- Features 5
- Build 4
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