What Hi-Fi? Verdict
JBL’s big Bluetooth speaker might have bulked up, but it's sounding better than ever
Pros
- +
Impressive sense of scale
- +
Excellent clarity
- +
Punchy, expressive delivery
- +
Solid build quality
Cons
- -
Bulky design isn’t exactly subtle
- -
New edge lighting won’t be for everyone
- -
No aptX support
Why you can trust What Hi-Fi?
Just when you thought JBL couldn’t make its Xtreme portable Bluetooth speaker any more, er, extreme, it goes and blesses us with a fifth-generation model. And this one is not only waterproof and dust-proof – it is now drop-proof too.
The JBL Xtreme 5 can also put on a bit of a show thanks to new colourful, customisable edge lighting, which emits from two strips placed on the front of the speaker.
Dig a little deeper, though, and you’ll discover there’s a lot more going on here than just a light show and a newfound sense of invincibility.
Price
The good news for prospective buyers is that the price of the JBL Xtreme 5 hasn’t really changed massively compared with its predecessor. It costs £330 / €350 / $400, while the Award-winning Xtreme 4 started life at £330 / €330 / $380 although it can be found significantly cheaper now, given it launched back in 2024.
It has a close rival in the shape of the five-star Bose SoundLink Max. This, too, originally launched in 2024 for £399 / €400 / $399, but at the time of writing, it can also regularly be found for less than its JBL counterpart.
Design and build
Bluetooth? Yes (6.0)
Mains-powered or battery-powered Both
Battery life 24 hours
Features IP68 rating, Playtime Boost, AI Sound Boost, Smart EQ, Auracast
Connections USB-C (charging and audio)
App? Yes
Dimensions (hwd) 16.5 x 34.6 x 15.5cm
Weight 2.9kg
Finishes x 3 (black, blue, squad)
Like a bodybuilder who has bulked up for their first show of the season, the Xtreme has been beefed up by JBL for this latest incarnation.
Placed next to the previous version, the Xtreme 5 comes across as much more of a unit. The changes in proportions are immediately noticeable, and you could almost be forgiven for thinking this was actually a new step-up model.
The latest hi-fi, home cinema and tech news, reviews, buying advice and deals, direct to your inbox.
Compared with the Xtreme 4, the Xtreme 5 is more than 1.5cm wider, just over one centimetre deeper, and nearly five centimetres wider. These figures don’t look like a lot on paper, but see the two together in reality and the difference in stature is obvious.
The 5 is also nearly one kilogram heavier, which you can feel as soon as you pick it up by the carry strap (which you’ll be pleased to know still includes a bottle opener as part of its design).
Speaking of the strap, the floating loops on top of the speaker have more clearance on the new model, making it slightly easier to attach than on its predecessor.
A couple of other design tweaks also enhance the Xtreme 5's broad chest. The built-in stand, which uses rubber bumpers along the front and back edges for stability, has increased in size, while the rubberised ‘fins’, which are dotted around the edges of each end of the speaker, are more robust to offer greater protection should it roll off your picnic bench.
The passive bass radiators at either end of the speaker are also bigger, which means the sense of theatre they offer as they pulse in time with your favourite tunes has a bit more visual impact.
And that’s before your eyes are attracted to those light strips on the front of the Bluetooth speaker. You can change their colour, the pattern they display, or you can turn them off completely.
The control buttons, which used to simply to sit directly on top of the speaker’s ruggedised fabric, have changed position slightly. They are now mounted on a large matte-finished panel on the top of the speaker (together with power, Bluetooth pairing, and Auracast buttons), which we think also adds to its perceived bulk.
Features
But it’s not just at the surface level where changes have been made – there has been a significant overhaul to the driver configuration of the Xtreme 5. Where previous generations used twin tweeters and twin woofers, the new speaker keeps the tweeters but ditches the woofers in favour of a single ‘racetrack’ driver positioned behind the JBL logo.
JBL claims the new driver can better handle the increased power of the new model, a by-product of which is that it can deliver more mid/bass than its predecessor.
The total power output of the Xtreme 5 is a claimed 130W when mains powered, 90W when running off the built-in battery. This compares with figures of 100W and 70W for the Xtreme 4.
The speaker supports Bluetooth 6 and Auracast – the latter allows you to pair two Xtreme 5s together to use in stereo, or to connect multiple compatible JBL speakers together, should you want music blasting throughout your house.
Charging the JBL Xtreme 5 is done through the USB-C connection on the back, and the speaker can power your smartphone or tablet through the same socket. It also supports lossless audio up to 24-bit/48kHz through a wired connection – although for most people that’s a nice to have feature, rather than an essential.
JBL has included a couple of technologies designed to aid sound quality. AI Sound Boost is always on and uses an algorithm to clean up low frequencies and reduce distortion; while Smart EQ analyses what you’re listening to in real time and can adjust the speaker’s delivery to suit, say, if you’re listening to music or a podcast.
In addition to helping you access the six different edge-lighting themes and alter the colours you see displayed, the JBL Portable app also allows you to access a new seven-band equaliser, should you want to tweak the out-of-the-box sound.
You can also form a stereo pair through the app and turn on Playtime Boost, which tweaks the sound so you can extend the battery life by four hours (as standard, you should be good for 24 hours of uninterrupted playtime).
We would steer clear of this particular feature unless you’re really desperate. It dramatically reduces the bass output of the speaker and makes the overall sound leaner and more compressed.
Sound
Avoid that setting, though, and the JBL Xtreme 5 does not disappoint.
Play Ed Sheeran’s Shivers and you can immediately hear that increase in power. As the track bursts into life during those first few seconds, you get a much greater sense of scale and size compared with the Xtreme 4.
You’re not buying a Bluetooth speaker for its stereo imaging, more for its spread of sound, and the JBL takes filling our modestly sized test room in its stride. Take the speaker outdoors and crank it up, though, and things get even more impressive.
The speaker laps up high volume levels and can easily go loud enough to power a summer party or annoy the neighbours, depending on your mood.
There’s plenty of bass weight – even with the Xtreme 5 firing out into the great wilderness, the track’s deep, probing bassline makes its presence felt. Impressively, though, it doesn’t overpower the rest of the track – Sheeran’s expressive vocals still take centre stage.
The other thing that strikes us about the JBL is how much clearer it sounds than its predecessor. It makes the Xtreme 4 sound hazy and cluttered in comparison.
Play Run by Stephen Fretwell, and there’s more separation around the individual elements, so you can hear what each one brings to the music.
You can inspect around the edges of that crisply defined percussion and piano, but the whole presentation remains cohesive, and the track remains confidently knitted together with the lead vocal at the centre. It’s still a hugely musical listen and captures the slow, gentle rhythmic flow and rise and fall of the track.
We switch between battery and mains power, and can hear a small injection of punch and solidity when we tap into that bigger power figure. It’s not a huge jump, though, and we think you’ll be satisfied whichever way you decide to use the speaker.
Verdict
Just when we were starting to wonder how JBL could improve things with yet another generation of Xtreme, it goes and beats what came before.
The Xtreme 5 is a beefier design than previous versions. Not only does it have greater sonic presence, but it also has a newfound sense of clarity, which elevates sound quality to a new level. And that’s bad news for its closest rivals. Bravo, JBL.
Review published: 13th May 2026
SCORES
- Sound 5
- Features 4
- Build 5
MORE:
Read our Bose SoundLink Max review
Want something cheaper? Check out the JBL Charge 6
Our guide to the best Bluetooth speakers for every budget
Andy is Deputy Editor of What Hi-Fi? and a consumer electronics journalist with nearly 20 years of experience writing news, reviews and features. Over the years he's also contributed to a number of other outlets, including The Sunday Times, the BBC, Stuff, and BA High Life Magazine. Premium wireless earbuds are his passion but he's also keen on car tech and in-car audio systems and can often be found cruising the countryside testing the latest set-ups. In his spare time Andy is a keen golfer and gamer.
- Ketan BharadiaTechnical Editor
You must confirm your public display name before commenting
Please logout and then login again, you will then be prompted to enter your display name.
