JBL Boombox 4 Portable Bluetooth Speaker in Black - JBLBOOMBOX4BLKAM
which ends 06/07/2026
Meet the JBL Boombox 4
Experience everything the small but mighty JBL Boombox 4 has to offer. Though this portable speaker has a compact body, AI Sound Boost delivers powerful audio playback. This innovative technology monitors songs as they play and automatically adjusts sound settings to ensure you hear clean, clear notes with reduced distortion. Even when you listen at full volume, each note is heard just how the artist and producer intended. Plus, bring the JBL Boombox 4 on the go either by holding onto the handle or attaching a carabiner so the music doesn’t have to stop at the door. Instead, jam out while hiking your favorite trails or while hanging out at the beach.
Unforgettable Audio Playback
The JBL Boombox 4 is packed with features to transform any space into a superior listening session. If you’re a fan of deep, rich bass, then you’ll love the Bass Boost button. When pressed once, Deep Bass mode is activated and the woofers and radiators go all out for crazy bass playback. Hoping for something a little more energetic? Just hit the Bass Boost button twice to enter Punchy Bass mode. If you prefer something a little deeper, plug in your laptop or mobile device via the USB-C port and enjoy lossless audio for each of your favorite songs and artists.
Experience Hours of Music Everywhere You Go
Keep the music alive for 28 hours at a time with the JBL Boombox 4. If that’s not enough time to enjoy your party playlist, activate the JBL Playtime Boost feature for an extra six hours. That’s a total of 34 hours with just a single charge, so you don’t need to worry about needing to have an outlet nearby. That means no matter where you go, the music doesn’t need to stop to charge up. From beaches to campsites, truly bring the music anywhere you go due to the IP68 waterproof and dustproof rating. To learn more about the JBL Boombox 4, contact our team at 800-860-3577 or explore our in-depth guide to portable speakers.
Features
- Unbeatable JBL Pro Sound with AI Sound Boost
We’re 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 don’t have to lift a finger—this 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? It’s 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 weather—or our clumsiest friends—throw 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 you’ll get that classic JBL signature bass we all love. Want to take it deeper? Hit the Bass Boost button on the top panel—the JBL Horn mark glows orange, and boom, you’re 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 you’re in Punchy Bass mode. Whatever the mood, we’ve got the bass to match. - Bigger and louder, but lighter
The JBL Boombox 4 sounds bigger and better than ever—but here’s the real win: we redesigned it to be lighter than before. So now it’s 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 4’s 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. - 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 rechargable battery in three simple steps, and your JBL Boombox 4 will be back at full power.
Footnotes
- *Requires compatible lossless audio content from supported apps or services.
- **Replaceable battery sold separately
General
Warranty Information
Approximate Weight
Approximate Dimensions
Frequently Asked Questions
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The speaker offers up to 28 hours of battery life on a single charge, with an additional 6 hours available through JBL Playtime Boost feature. It uses a rechargeable lithium-ion battery that fully charges in approximately 3 hours, allowing you extended use for parties or outdoor activities.
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Yes, it has an IP68 rating, making it both waterproof and dustproof. This means it can withstand dust ingress and water immersion, making it suitable for outdoor use in various weather conditions and environments like the beach or backyard without worry.
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You can connect multiple speakers using the Auracast technology, which allows stereo pairing of two speakers or connection of several Auracast-enabled JBL speakers to play the same playlist over a wider area, creating an impressive and immersive sound experience.
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The speaker includes JBL Pro Sound with AI Sound Boost, which analyzes music in real-time to optimize sound output with more power and less distortion. It also features two bigger woofers, two tweeters, three passive radiators, and selectable Bass Boost settings to adjust bass intensity according to your mood.
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It supports Bluetooth 5.4 for wireless connectivity and includes a USB-C port that allows lossless audio playback when connected to compatible audio devices. The speaker is controlled via buttons on the unit and can also be managed through the JBL Portable app for fine-tuned audio adjustments.