JBL Boombox 4 - Most Powerful Portable Waterproof Speaker with Massive Pro Sound, Up to 34 Hours of Playtime, & Multi-Speaker Connection by Auracast™ (Squad)
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Availability:
In Stock.
Arrives
Friday, Mar 20
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Color: Squad
Features
- Unbeatable JBL Pro Sound with AI Sound Boost: Were talking massive sound with deep and punchy bass. The redesigned JBL Boombox 4 packs in two bigger woofers, two tweeters and three passive radiators, so every track hits harder and sounds cleaner. And with AI Sound Boost, we dont have to lift a fingerthis smart tech analyzes our music in real time and adjusts the sound to give us more power with less distortion, even when we turn it all the way up.
- Up to 34 hours of playtime: Keep the vibe alive from party to party... to party, for up to 28 hours on a single charge. Forgot to charge up for the next one? Its all good. JBL Playtime Boost adds up to 6 hours of extra popping, locking, sliding, or whatever moves you got left in that bag.
- Waterproof and dustproof: The JBL Boombox 4 is IP68 waterproof and dustproof, so it can handle whatever the weatheror our clumsiest friendsthrow at it.
- Multi-speaker connection by Auracast: Wouldn't it be great to share the whole mood with the whole crew? With Auracast, effortlessly stereo pair two Boombox 4 speakers for a wider sound stage or connect multiple Auracast-enabled JBL speakers to cover more ground with the same playlist.
- Two Bass Boost settings to match our vibe: When it comes to bass, we like having options. Fire up the JBL Boombox 4 and youll get that classic JBL signature bass we all love. Want to take it deeper? Hit the Bass Boost button on the top panelthe JBL Horn mark glows orange, and boom, youre in Deep Bass mode, where those two woofers and three passive radiators go all in. Want something tighter and more energetic? Tap the button twice, the Horn mark turns white, and youre in Punchy Bass mode. Whatever the mood, weve got the bass to match.
- Bigger and louder, but lighter: The JBL Boombox 4 sounds bigger and better than everbut heres the real win: we redesigned it to be lighter than before. So now its way easier to set the tone wherever we go.
- Lossless audio playback: Want to hear every detail? Plug into your laptop or other audio device using the Boombox 4s USB-C port* to enjoy lossless audio playback. It's perfect for real audio fans who want more from their music. Just make sure your source offers lossless audio. *Requires compatible lossless audio content from supported apps or services.
- Recycled plastic and fabric, plus FSC certified paper packaging: The JBL Boombox 4 incorporates post-consumer recycled plastic and recycled fabric for the speaker grille. It's also packaged in FSC-certified paper printed with soy ink.
- Replaceable battery**: "Want even more life out of your speaker? Replace the rechargeable battery in three simple steps, and your JBL Boombox 4 will be back at full power. **Replaceable battery sold separately"
Description
"We turn it up our way—anywhere. The all-new JBL Boombox 4 is bigger, bolder, and better than ever, with powerful JBL Pro Sound that stays loud and clear, with deep thumping bass. AI Sound Boost analyzes our music in real time and adjusts the sound to give us more power with less distortion, even when we turn it all the way up. It packs two bigger woofers, two tweeters and three passive radiators, so every track hits harder and sounds cleaner. When we want to fine-tune the vibe, we just switch between deep or vibrant punchy Bass Boost settings to match our mood. We gave the classic Boombox design a fresh upgrade—it’s larger but lighter, so we can take it wherever the party goes: the beach, the block, or the backyard. It’s IP68 waterproof and dustproof, so weather’s never a dealbreaker. And, with up to 34 hours of playtime (thanks, Playtime Boost), we’re set for the long haul. With the JBL Boombox 4, we carry the mood and the energy, everywhere we go."
Brand: JBL
Speaker Maximum Output Power: 65 Watts
Connectivity Technology: Bluetooth
Audio Output Mode: Stereo
Input Voltage: 5 Volts
Mounting Type: Floor Standing
Material: Plastic
Model Name: JBL Boombox 4
Speaker Type: Portable Speaker
Color: Squad
Included Components: AC power cord (AC plug and quantity varies by region), JBL Boombox 4, Quick Start Guide, Safety Sheet, Warranty Card
Product Dimensions: 8.4"D x 19.9"W x 10.4"H
Item Weight: 13 Pounds
Number of Items: 1
Speaker Size: 123 Millimeters
Signal-to-Noise Ratio: 80 dB
Woofer Diameter: 123 Millimeters
Tweeter Diameter: 20 Millimeters
Water Resistance Level: Waterproof
Number of Batteries: 1 Lithium Polymer batteries required.
Audio Driver Type: Dynamic Driver
Series Number: 4
UPC: 050036413237
Bluetooth Version: 5.4
Global Trade Identification Number:
Manufacturer: JBL
Item Weight: 13 pounds
Item model number: JBLBOOMBOX4SQUADAM
Batteries: 1 Lithium Polymer batteries required.
Is Discontinued By Manufacturer: No
Date First Available: September 3, 2025
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Mar 20
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Color: Black
I've been a longtime user of JBL products, but the Boombox has been my favorite speaker in their entire lineup. The built in handle, waterproof design, and fantastic battery life are what drew me to it in the first place. I owned the original Boombox for nearly 8 years. It survived dozens of camping trips in extreme heat, and was tested by FL beach trips, one of which ended in a violent rainstorm. It never failed me and could hold up to any abuse, which is why I have no problems recommending their Boombox lineup to anyone. My excitement for the Boombox 4 grew when I found out it would use an easily replaceable battery, simply by popping off the bottom cover. I had to replace the internal battery of my BB1 after 7.5 years, and it was a terrible experience that took around two hours, and was very frustrating at times. I told myself I would never buy another Bluetooth speaker that didn't have a hot-swap style battery compartment. I'm happy to see that the new speaker lineup does this. SPECS The new JBL Boombox 4 has significantly more power than the original model from 8 years ago. We're talking a jump from 40 watts to 200 RMS watts on battery power. That, combined with the larger drivers let me know that I was in for quite an upgrade. If you already have the 3rd gen BB3, I would think this wouldn't be a significant upgrade for you, but coming from the OG BB1 it most certainly was for me! The ports on the rear flip cover are power and USB Type C. APPEARANCE After unboxing the new Boombox 4 I could tell it was a bit larger than the old Boombox 1, but not by much. I'm happy to see JBL go back to a handle that appears to be a part of the speaker, instead of looking like it was thrown on as an add-on, like that of the Boombox 3's handle. It's also comfortable to hold, and the weight distribution of this speaker is spot-on. I can't tell that this new speaker is 1.5 pounds heavier than the BB1. Overall it's a very good looking speaker. The pictures don't do it much justice. You need to see it in person to really appreciate the craftsmanship. INDOOR LISTENING My initial listening experience with the new BB4 was ear-to-ear grin worthy. I immediately realized this upgrade was legit! There's so much more lower end grunt. While playing indoors at lower volumes, I found that for certain music genres I really appreciated the low-end bass boost mode. It provides the thump you crave, even at low levels. As you raise the volume up to anything over half, I find the bass boost unnecessary, and perhaps even a bit overpowering. That's likely subjective to each persons personal tastes, as well as music genres. It's nice to have the option to use it when you want it. OUTDOOR LISTENING My OG BB1 was my favorite go-to speaker for outdoor Bluetooth music sessions, and this one excels even more at that. The BB4 has significantly more power on offer, so it's easier to fill any space with fantastic sounding music. With our modest sized corner lot, I find that keeping its volume around the 50% point is plenty to fill our yard with great sound, while not being distracting to any neighbors who may be around outdoors. What impressed me most with the new speaker is how much further and clearer both the highs and low frequencies come through. With the BB1, once I walked away more than 20 feet the bass really fell off and wasn't too noticeable, but with the BB4 I can still hear the low notes from that distance. I'm truly impressed at what the BB4 can do as an outdoor speaker. To respect my neighbors, I didn't run the Boombox 4 at maximum output, but for the brief time I had it up around 80% it was obvious that this speaker is plenty loud for most people. AURACAST Next I paired the Boombox 4 with my PartyBox 520, using Auracast. I turned on both speakers, started playing music from one, then hit the Auracast button on each. Within 5-8 seconds they paired up and were in sync with each other. Obviously pairing a speaker like the Boombox 4 along with a much larger one like the Partybox 520 is going to create a situation where you mostly hear the larger speaker. This leads me to the decision that the best way to utilize a setup like this is to run one indoors and the other outside. For a nice sized party, the Boombox would serve well indoors and the PartyBox would be perfect outside. CONS If I had to knock JBL for anything with the new BB4, it would be their decision to omit the 3.5mm aux port. This was a feature all the previous models had. I know there's a USB Type C port for lossless audio playback, but it doesn't work with a Type C to 3.5mm aux adapter. I enjoy projector movie and game nights, and I used my BB1 for the audio when viewing content with the projector by way of a simple aux cable. I did a bit of research and discovered that my Google Chromecast has Bluetooth audio playback available, but not the Roku streaming stick that I've always used for the projector. I was able to connect the Boombox 4 to my Chromecast and use it to play the audio, so I'm thankful that works! Still would have loved a 3.5mm aux port. SUMMARY JBL continues to impress with their newer lineup of speakers. As bittersweet as it was to let it go, I'm happy to be rid of the Boombox 1, as the Boombox 4 is an amazing upgrade in nearly every way. I won't have to worry about complex battery swaps in the future, which is probably the main reason I went for the upgrade. I'm happy with the extra power this speaker puts out. For anyone looking for an all-purpose, outdoor Bluetooth speaker, this is the one! No need to worry about water or dust interrupting your music sessions. Stop thinking about buying a Boombox 4 and just pull the trigger!
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Reviewed in the United States on September 30, 2025 by Christopher Pike Christopher Pike
Color: Black
HANDS DOWN THE BEST BLUETOOTH SPEAKER ON THE MARKET. I have bought pretty much every BT speaker on the market (obsessed). I'm an audiophile and my main system is worth 10s of thousands. I had multiple jbls, bose, and a whole slew of different brands i dont care to list. I gave away most of them to justify buying new toys (my friends love it lol). I am not giving this thing away EVER. All my previous complaints have been addressed. Replaceable battery, stable base, lighter, smaller and double the output. For indoors i use a custom EQ to tame the bass. Because it is RIDICULOUS (alot of overhead!). I crank up the treble to sharpen it up and I find that 30% volume will fill most indoor spaces with excellent, long playtime and sharp music while barely trying! It has plenty of overhead to deliver excellent volume and presence for the beach and any outdoor event up to 60 people. This is the perfect setup. Need more coverage? order a second one for stereo (i will). This is the end game Bluetooth speaker. Everything else is a mere shadow of this beast regardless of price. JBL knocked this out of the park. My search has ended.
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Reviewed in the United States on December 24, 2025 by Dimitri
Color: Black
Impressive! Extremely well built! Fantastic bass and tremendous volume for a smallish portable speaker! Battery lasts a very long time. I haven't come close to depleting the battery even for an all-day outdoor event. The Deep Bass setting really does bring out surprising lows that you would typically expect to require a subwoofer. Drawbacks: JBL app has a 5 band EQ and device doesn't support any high fidelity codecs such as LDAC. The JBL Boombox 4 is quite awesome, at least when discussing mainstream music. If you listen to music with infrabass, frequencies below 20Hz, you're not going to hear much and you can't equalize to bring it out. The DSP cuts frequencies below a certain threshold to protect the speakers. I plan to test that lower limit later this month and will report back. Absolutely a great product and very high value for your money.
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Reviewed in the United States on December 5, 2025 by The Truth and Only the Truth
Color: Black
This speaker is amazing. The sound quality is great. The bass is unreal for a speaker this size. The upgraded features over the Boombox 3 are truly an upgrade. You get deep bass, punchy bass choices. Also you get a custom EQ plus quick charge. It's well worth the purchase.
Reviewed in the United States on December 25, 2025 by anthonylboston
Color: Black
I am baffled at how amazing this speaker sounds, from the highs to the bass its all impressive. It's not cheap, but its worth every penny. Highly recommend this speaker, put it in the corner of a room and enjoy the concert.
Reviewed in the United States on January 23, 2026 by Matthew Bauer