JBL Boombox 4

S STEREO GUIDE Article

The Boombox 4 thus allows for easier adjustment to the music, setup, and listening environment.

M Marklevinson Article

The redesigned Boombox 4 packs in two bigger woofers, two tweeters, and three passive radiators, so every track hits harder and sounds cleaner. We also added AI Sound Boost, our exclusive tech that analyzes your music and adjusts the acoustics in real time to reduce distortion—even at max volumes.

S SoundGuys SoundGuys · 323K subscribers · Dec 2025

The Boombox 4 is also slightly more durable than the Boombox 3 with an IP68 rating, meaning it's still fully dustproof, but now it can be submerged deeper into water. And it's also about 2 lb lighter than the Boombox 3. Boombox 3 weighs in at around 15 lbs, but the 4 weighs around 13 lbs. So, we've got a new model that's more durable yet lighter than its predecessor. But enough about the outside.

T TechGearLab Elizabeth White · reviewer

If you want the loudest, clearest bass that can reverberate across a house or huge outdoor party without distorting, the JBL Boombox is our favorite option. While it can be used for solo jam sessions, there are more affordable, compact, and portable options available.

B Bryam Medeiros Bryam Medeiros · 239K subscribers · Sept 2025

We have a very beautiful design here, as I told you weeks ago, it's basically a Mega Extreme 4. No exaggeration, look, exactly the same, the same shape, but with a handle here on top. The Boombox 4 will feature AI Soundboss, which we already see here in other speakers, and it will optimize your sound using artificial intelligence. Furthermore, it will also have Bluetooth 5.4.

E ecoustics.com Ian White · reviewer

The JBL Boombox 4 and PartyBox 720 are unapologetically built for scale—lighter builds, smarter AI-powered audio, user-replaceable batteries, and full waterproofing/splashproofing mean JBL isn’t just chasing volume, it’s chasing longevity and versatility.

B Bryam Medeiros Bryam Medeiros · 239K subscribers · Sept 2025

It has excellent construction, the AI ​​Soundboss. In my opinion, based on the tests I've conducted here on the channel, it makes a real difference in your user experience. Its sound is truly full, and besides being very well-rounded, it also has incredible volume, to the point of beating a speaker from the Paribx line.

W What Hi-Fi? Article

Battery performance is impressive, offering up to 28 hours of standard playback, extending to 34 hours with Playtime Boost activated. The battery is also now user-replaceable – a major win for those who want to extend the life of their investment.

A AudioTribe AudioTribe · 85.7K subscribers · Jun 2026

I really love how this speaker sounds. Now, let's go to the JBL uh Party Box 120 with the same uh song in the same condition with the same equalizer and with the same uh deep bass activated. Let's reset the decibel meter. Put it on DBC to measure the intensity on the maximum value.

The big selling point for me on the Boombox 4 was being able to output 200 RMS on battery, which is just ridiculous. There's no current Bluetooth speaker out there right now that can output that kind of power on battery. The Boombox 4 is special.

B Brenaoo OFICIAL Brenaoo OFICIAL · 83.8K subscribers · May 2026

This speaker delivers up to 210 W RMS when plugged into an outlet. For those who aren't very familiar with numbers, it basically means an extremely loud, strong, and prominent sound. That feeling of the bass pounding in your chest, you know? So, that's exactly the kind of experience it is.

F Forbes Mark Sparrow · reviewer

“Striking a balance between powerful bass and high-quality audio is a difficult art to master, but with the introduction of proprietary technologies like Bass Boost and AI Sound Boost, JBL Boombox 4 does exactly that.

T Techno Mushi Techno Mushi · 39.4K subscribers · Sept 2025

This could be the ultimate portable speaker of 2025. Let's break it down. The Boombox 4 isn't just about size. It's about sound. With dual 5-in woofers, dual tweeters, and three passive radiators, this thing delivers booming bass, crisp highs, and powerful output. In AC mode, you get a huge 130 watts RMS. And even on battery, it still pushes serious volume.

T Trusted Reviews Andrew Williams · reviewer

But the BoomBox 4’s is a rare example of it not tending to make vocals sound too boxy, while also tempering the ways in which the speaker isn’t neutral-sounding.

T TecH MoE TecH MoE · 36.6K subscribers · Aug 2026

This is JBL's newest flagship boombox. With it, you're getting two woofers, two tweeters, and the three passive radiators working together. It's got AI sound boost, which basically means your speaker is analyzing your music in real time, so it doesn't distort even when you crank it all the way up. You can get up to 34 hours of total use on a charge with it.

T the Guardian Article

If you want to provide the soundtrack for an outdoor party, complete with thumping bass, you’re going to want the sheer sonic power of JBL’s BoomBox 4.

T Techder Audios Techder Audios · 34.5K subscribers · Sept 2025

I can definitely say JBL wins in some scenarios

We all need friends like DJ Ktime! Tis the season of giving and what better than the gift of great sound with the new Boombox 4 🎄.

C Critical Tech Critical Tech · 17.3K subscribers · Aug 2025

When connected to AC power, the speaker reaches an impressive 210 watt RMS output. While on battery power, it still maintains a substantial 180 watt RMS. A level of performance that ensures rich room filling sound even outdoors.

S SoundGuys Dave Carr · reviewer

Durable and loud with plenty of bass, the JBL Boombox 4 is the ideal choice for outdoor listening when volume counts.

J Jagist reviews Jagist reviews · 9.6K subscribers · Nov 2025

It is a very bassy machine. Um, I'm using it in JBL Signature EQ mode. Bass boost mode is great, but you don't really want to, as far as I've been able to test so far, uh it can lead to more distortion and at uh lesser volume levels.

E Elo My Melo Soumya Roy · reviewer

Overall, it's a huge win for the JBL Boombox 4 in the department of sound quality.

J Jagist reviews Jagist reviews · 9.6K subscribers · Dec 2025

I put it up against its brothers, and honestly, this one doesn't get as loud, but I do think that it sounds better. It's got the best clarity, the best mids, and really good allgether put together sound. not as deep a subbase and doesn't get as loud. Its bigger brothers are definitely kings as far as those things go, but I really love the sound of the S95. It just sounds great.

S SoundGuys Dave Carr · reviewer

The Boombox 4 does not feature a 3.5mm input, but it does offer audio over USB-C.

J Jagist reviews Jagist reviews · 9.6K subscribers · May 2026

The JBL Boombox 4 has awesome clarity, has great highs, and good decent bass to go along with it with uh decent mids as well. So, let's go ahead and test these bad boys up and just see the Zealot's going to run you about 230 bucks. The JBL Boombox 4 is normally 550, but I've seen it on sale quite a few times now for about 450, so I would say it's about twice as much as the Zealot, give or take.

Love the Boombox 4! The firmware updates did their job. V26.16.

J Jagist reviews Jagist reviews · 9.6K subscribers · May 2026

The JBL Boombox 4 on the other hand, beautiful looking speaker, loving it. Uh, ever since I firmware updated it, I have used it a lot more. It does have slightly less bass, but I pretty much can't tell the difference. It It basically, to me, has essentially about the same amount of bass, I would say, as far as the mids and higher bass.

The JBL Boombox 4 is almost the perfect party speaker.

E Expert Nederland Expert Nederland · 8.3K subscribers · Dec 2025

If you are looking for a speaker with powerful sound that you can take with you anywhere, then this might just be the speaker you are looking for. The new JBL Boombox 4 is a large portable speaker that delivers powerful sound with large fans and smart sound technologies .

H Harmanaudio Article

Unbeatable JBL Pro Sound with AI Sound Boost

H HammoTech Reviews HammoTech Reviews · 7.8K subscribers · Sept 2025

So, the Boombox 4 definitely holds up. Like, it doesn't make that much difference if you plug it in or not. The Boom Box 3 will make a much more noticeable difference when it's left plugged in, which I think is worth considering cuz realistically, you don't want to use these things when they're plugged in.

G Gi Rides Gi Rides · 2K subscribers · Jun 2026

What I think is uh I can honestly say that those those two speakers are my favorite speakers I ever had ever. Um Xtreme 5 is uh very compact uh compared to, you know, Boombox 4. It's It has a shoulder strap and it sounds very good. They sound They both sound very, very good. Except, you know, Boombox 4 is much bigger.

C Click To Cart Click To Cart · 598 subscribers · Jan 2026

From real world impressions, it handles different genres well, whether it's hip-hop, electronic, pop, or even acoustic tracks. One of the biggest highlights is battery life. JBL claims up to 34 hours of play time. And based on user feedback and testing patterns from previous Boombox generations, it delivers impressive endurance at moderate volumes.

K Kim Digital Kim Digital · 86 subscribers · May 2026

This thing is an absolute beast. You're getting massive JBL Pro sound powered by two bigger woofers, two tweeters, and three passive radiators. Translation, deeper bass, cleaner highs, and room-shaking volume without distortion. But here's the real magic, AI Sound Boost.

T The Upgrade The Upgrade · 10 subscribers · Aug 2026

If serious sound, real durability, and all-day battery life are what you're after in a portable speaker, the JBL Boombox 4 is one of the strongest options out right now. Let me know in the comments where you'd take it first. Find the link to this product in the description below.

A angelic angelic · 9 subscribers · Dec 2025

If you want uncompromising volume and durability, the Boombox 4 is the new gold standard.

A Architeg Prints Architeg Prints · reviewer

While it’s not perfect—occasional distortion and a high price tag might put some off—it stands out as a top choice for those wanting a serious sound system for big gatherings.

G GYMCADDY GYMCADDY · 175K subscribers · Oct 2025

The JBL Boombox 4 has a lot of big changes to it compared to its predecessors. Some good and some not so good. But what is impressive about the JBL Boombox 4 is its max volume performance and bass. It's genuinely up there with the JBL PartyBox 120, which is very shocking. But today we're going to check out the JBL Boombox 4 and we're going to compare it to both the JBL Boombox 3 and the JBL Boombo

A Architeg Prints Architeg Prints · reviewer

While it’s not perfect—occasional distortion and a high price tag might put some off—it stands out as a top choice for those wanting a serious sound system for big gatherings.

G GYMCADDY GYMCADDY · 175K subscribers · Oct 2025

The JBL Boombox 4 has a lot of big changes to it compared to its predecessors. Some good and some not so good. But what is impressive about the JBL Boombox 4 is its max volume performance and bass. It's genuinely up there with the JBL PartyBox 120, which is very shocking. But today we're going to check out the JBL Boombox 4 and we're going to compare it to both the JBL Boombox 3 and the JBL Boombo

A Architeg Prints Architeg Prints · reviewer

While it’s not perfect—occasional distortion and a high price tag might put some off—it stands out as a top choice for those wanting a serious sound system for big gatherings.

G GYMCADDY GYMCADDY · 175K subscribers · May 2026

I feel that both of these speakers should have come included with shoulder straps as well.

A Architeg Prints Architeg Prints · reviewer

While it’s not perfect—occasional distortion and a high price tag might put some off—it stands out as a top choice for those wanting a serious sound system for big gatherings.

G GYMCADDY GYMCADDY · 175K subscribers · Nov 2025

However, the JBL Boombox 4 can be a little pricey. So, today we're going to compare the JBL Boombox 4 with its little brother, the JBL Xtreme 4, and we're also going to throw in the Sony ULT FIELD 5. Let's see if it's worth it for you to upgrade to the JBL Boombox 4 or if the smaller speakers will get the job done just right for you.

G GYMCADDY david_tvv1452 · owner · Nov 2025

I have the BB3 and a colleague of mine has the BB4, and the BB4 distorts and the sound isn't as nice as the BB3.

G GYMCADDY GYMCADDY · 175K subscribers · Oct 2025

One of the biggest upgrades on the JBL Boombox 4 is that it gets impressively loud and it has a lot of bass for its size. Honestly, the max volume performance on the JBL Boombox 4 is up there with the max volume performance of either the JBL PartyBox 120 and the JBL PartyBox On-The-Go 2. But, the bass is a different story.

T Tech Reviews Article

Of course, this is a bit overkill for those just looking for a portable speaker that they can take with them.

G GYMCADDY GYMCADDY · 175K subscribers · Oct 2025

Now, both of these speakers also have built-in light features, but I don't think that these light features are worth using cuz with the Boombox 4, this light feature only flashes orange or white depending on the bass boost mode that you're using, but it still flashes to the beat of your music. but it's not color changing like let's say on the JBL Party Box whatever.

JBL Boombox 4 - They ruined it!

G GYMCADDY GYMCADDY · 175K subscribers · May 2026

So, if you're looking for something more durable, then you do want to go with either the JBL Boombox 4 or the Sony Alt-Field 7. But, another thing that all of these speakers have in common is that they all have a built-in light feature.

T TechGearLab Chris McNamara · reviewer

Large footprint

T Tinkr | Reviews & Guides Tinkr | Reviews & Guides · 141K subscribers · Apr 2026

The 28-hour figure is real at moderate volumes. But max everything out with bass boost engaged, and that drops to around 5 to 10 hours. 5 to 10. Something to plan around. And one more note, JBL removed the 3.5 mm AUX this generation. USB-C lossless is in its place now. Listen, here's what I think everyone's missing. That 34-hour battery claim. 34 hours. It only applies with playtime boost on.

A AudioTribe AudioTribe · 85.7K subscribers · Sept 2025

And I really love that on this model the passive radiators have lights depending on the base boost button. So if we have no bass it will not be light. It will have the deep bass. So the first level of bass it will be with red color and the second one it is it will be with a purple color. You will see when I will play the song.

A Alan Ross - The Anti Shill! Alan Ross - The Anti Shill! · 34.7K subscribers · Sept 2025

In my opinion, it's not too bad. The worst bit that I found is it's on the highs. Over 60% the highs can really make your ears bleed. Go outdoors. Then the extra volume will be a welcome thing I imagine. So I did mention you get that in the bass. All I'm really getting is that little bit of the sound of probably the passes bottoming out.

T Techder Audios Techder Audios · 34.5K subscribers · Sept 2025

So, the Boombox 4 is finally here, and the speaker is, I would say, good, but a few things I don't like as much on this one as the previous model, but most things are good to say straight away. And JBL has had some ups and downs in the past, especially with the Boombox 3.

J Jagist reviews Jagist reviews · 9.6K subscribers · Nov 2025

Does have some distortion here and there. So, that's pretty much the only qualm I really have with it. Um, hopefully they will release a firmware and fix that. And honestly, it's going to be amazing when they do that. So, JBL Boombox 4, we're putting it up against the Zealot S89. Now, the Zealots have come a long way. They used to be super crappy brand. Um, pretty cheap on the speakers.

F Fix it Tony Fix it Tony · 6K subscribers · Apr 2026

I wanted to do a buyer beware of the new Boombox 4 from JBL. And the reason why is these portable speakers are getting very, very popular. JBL, hands down, they're owned by Harman Kardon, they build the best portable speakers. Some of these are a little more portable than others, um but depending on what you need, maybe this is not the speaker for you, especially at the price point.

G Gi Rides Gi Rides · 2K subscribers · Jun 2026

Um JBL 3 Wi-Fi was my probably favorite speaker until I got JBL Boombox 4. And still at let's say 50% of volume, 75% of volume, JBL Boombox 3 Wi-Fi has probably better sound, crispier, cleaner sound, better highs, uh cleaner mids and uh um it's it's just probably better balanced speaker. Uh I'm talking about Boombox 3 Wi-Fi. So, on the other hand um the Boombox 4 shines where you go full blast.

S Shadi how to's Shadi how to's · 1.5K subscribers · Apr 2026

It's legit, but slightly overhyped on battery claims. If you were expecting max volume all day long, that's not happening. Bottom line, if you understand the tradeoffs, it's a strong speaker. If you're buying based on marketing numbers alone, you might be disappointed.