Sennheiser HD 4.50 BTNC
Do you yearn for some quiet time? Acknowledging the fact that many of us have to live, work and travel in chaotic surroundings these days, the Sennheiser HD 4.50 BTNC headphones are an effort to create the most affordable noise-cancelling headphones yet. Happily, they also sound great with music and movies.
And while the Sennheiser HD 4.50 BTNCs are clearly aimed at travellers, their price point – around £170 (US$200, AUS$299) – puts them well within the reach of anyone after some mid-range headphones.
Considering that the market leaders, the Bose QuietComfort 35s, cost £330 (US$350, AUS$499) and the Sony MDR-1000Xs go for £289 (US$350, AUS$588), the significantly cheaper Sennheiser HD 4.50 BTNCs are a tempting proposition indeed – especially as they offer almost identical features to those two main rivals.
Design
There's nothing special about how the Sennheiser HD 4.50 BTNCs look. In fact, upon first inspection these black headphones with a brushed aluminium accent look a little flimsy. There's a reason for that. While noise-cancelling headphones are fairly common in the first class and business class cabins of aircraft, their appeal has been restricted to those who travel with a lot of luggage. If you want to travel light, options have so far been limited, so Sennheiser has made the HD 4.50 BTNCs both lightweight and flexible. Weighing 238g on their own, they use fairly narrow, but thick cushioned and closed ear-cups.
Probably because of that narrow ear-cup design, they feel comfortable when worn around the neck, which is important if you're waiting in airport queues. On the right ear-cup is a volume rocker, track change slider and a micro USB slot for recharging the battery. Although HD 4.50 BTNCs use wireless Bluetooth there's also a 3.5mm stereo jack and an audio cable in the box.
It did take us a while to figure out that the volume button on the right ear-cup also toggled-on Sennheiser's NoiseGuard active noise-cancelling tech – it's a little tricky to perform the three-second hold needed to activate it.
While the HD 4.50 BTNCs may lack slightly in terms of build quality compared to rivals, the lighter the better for travellers. The same goes for the included travel pouch; yes, it's smaller, it's softer, and it's made from cheaper-looking nylon than the hard cases used by Bose and Sony. But once agin, that's a positive; those bulky cases are incredibly off-putting for anyone who likes to travel light, and the pouch adds just 47g to the headphones' total weight.
Performance
To get the best from the Sennheiser HD 4.50 BTNCs you need to use them in noisy environments, so we wore them in busy city streets, on a commuter train, and on a short flight. The NoiseGuard noise-cancelling tech uses dual omnidirectional microphones to monitor the ambient sound, which it then electronically cancels out.
Judged on sound quality, the aptX-certified HD 4.50 BTNCs perform remarkably well for the money. With a detailed, well-rounded stereo sound when connected to a smartphone wirelessly via Bluetooth, they proved more rounded with music than the Bose QC35s, but perhaps not as crisp as the Sony MDR-1000X.
Rumbly bass this is not, and music does lose a little of its lustre when the headphones are in NoiseGuard mode, but neither characteristic is unusual for the genre. Meanwhile, NoiseGuard is effective, and it's really hard to criticize it. It's perhaps half a notch below the tech found on both Bose and Sony headphones, but it's delivered in a far better-value package – and the volume goes very high without any distortion.
With affordability generally comes compromise, and we had expected to encounter this in the form of limited battery life. However, the Sennheiser HD 4.50 BTNCs last for 20 hours, which is highly impressive, and on a par with Bose and Sony headphones. In fact, the only issue we had was those snug-fitting ear-cups, which lack ventilation; hot ears are a very real possibility on a warm train or plane.
We liked
Good noise-cancelling earphones are the Holy Grail for travellers, and it's hard to argue with the travel-friendly design of the Sennheiser HD 4.50 BTNCs. They're exceptionally lightweight and comfortable to wear, and the narrow cushioned ear-cups block out a lot of sound even with NoiseGuard completely deactivated; switch on NoiseGuard and the silence impresses.
We disliked
Though they compare well to their rivals when it comes to design, there are a few niceties missing from the HD 4.50 BTNCs; there's no volume dial on the ear-cups (with a slider button instead), and no call-though button that momentarily silences the music while you order another glass of champagne from the in-flight attendant.
So what, you might say – the Sennheiser HD 4.50 BTNCs are about core features, not first-class cabin frivolities. That may be so, but the NoiseGuard activation button needs some work, and the headband could do with a little more padding, as could the ventilation; hot ears were an issue during our tests, which could make sleeping on warm planes a problem.
Verdict
With noise-cancelling tech just as effective as that in headphones from rival Bose, and with a more musical sonic ability, the Sennheiser HD 4.50 BTNC are a definite contender. More affordable and easy to travel with, these lightweight headphones are a great value all-rounder, whether for flights, commuter trains or busy offices.
Design-wise, the Sennheiser HD 4.50 BTNCs seem a more slimmed-down, lighter and more focused effort than the bulky and expensive alternatives from Bose and Sony; and crucially, the HD 4.50 BTNCs are just as good with audio, and almost as good on noise-canceling. Whether you're after noise canceling for long-haul ravel, for the commute, or just to stay more productive in a noisy office, the Sennheiser HD 4.50 BTNCs are worth considering.
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