The JBL Boombox 3 is the next generation of the JBL Boombox 2. This large and mighty Bluetooth speaker sports a similar design to its predecessor, with a built-in carrying handle so you can bring the party to your next gathering. It's well-built, has an IP67 rating for dust and water resistance, and floats in water, so it's a great option for the outdoors. It gets loud enough for big spaces, and you can customize its warm default sound profile with a three-band EQ in its companion app.
Our Verdict
The JBL Boombox 3 is good for music. It has a fairly balanced sound profile suitable for listening to a wide variety of genres. Vocals and lead instruments sound clean and present in the mix. The sound is light on rumble and punch, but some extra high-bass adds warmth. However, sibilants like cymbals sound a bit harsh. If you prefer a different sound, its companion app includes a graphic EQ for sound customization. It also gets loud with little compression at max volume, so you can blast your favorite music without affecting your audio quality.
- Graphic EQ.
- Gets loud with little compression at max volume.
- Narrow and directional soundstage.
The JBL Boombox 3 is alright for watching videos and movies. It's more meant for sharing music at parties than setting up near your TV. Still, if you end up using it to watch a video on your phone, the dialogue sounds clear. The speaker's companion app also includes a graphic EQ for sound customization. The speaker has low Bluetooth latency with iOS and Android devices, so your audio and video will stay in sync, although latency can depend on what app and device you're using.
- Low Bluetooth latency with iOS and Android.
- Narrow and directional soundstage.
The JBL Boombox 3 is decent for podcasts. It has a fairly balanced sound that makes voices clear and understandable. Some elements, like S and T sounds, can be a little harsh, but you can customize the sound with a graphic EQ in its companion app. Its portable design makes it easy to move with you from room to room, and it gets loud enough that you can clearly hear your audio from across a large room. It supports multi-device pairing, so you can easily switch between listening on your phone and computer.
- Gets loud with little compression at max volume.
- Narrow and directional soundstage.
The JBL Boombox 3 doesn't support voice assistants.
The JBL Boombox 3 is great for outdoor use. This portable, battery-powered speaker is very well-built and rated IP67 for dust and water resistance, so it can handle a party on the beach or by the pool. It even floats, so it's okay if it gets knocked into the water. It has a long 30-hour battery life and gets pretty loud with little compression present at max volume, so it can fill a big space with clear-sounding audio. The soundstage is narrow, so it won't project sound equally in all directions.
- IP67 rating for dust and water resistance.
- Gets loud with little compression at max volume.
- Long-lasting battery life.
- Portable design.
- Narrow and directional soundstage.
Changelog
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Updated Oct 23, 2025:
We've added a comparison with the JBL Boombox 4 in the Battery box.
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Updated Aug 08, 2025:
In the Dynamics section of this review, we updated the SPL @ Max Volume to be about 6 dB louder than previously recorded.
- Updated Aug 26, 2024: We've added a comparison between this speaker and the Sony ULT FIELD 7 in Frequency Response Accuracy.
- Updated Aug 20, 2024: We've updated the text of this review to ensure it's still accurate and added relevant comparisons in the text.
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Differences Between Sizes And Variants
The JBL Boombox 3 comes in two color variants: 'Black' and 'Squad,' which is a camouflage pattern. This review represents the test results for the Black variant; you can see its label here.
You can also get a version of this speaker with Wi-Fi support called the JBL Boombox 3 Wi-Fi, which introduces features like 3D Dolby Atmos support. It's also not compatible with JBL PartyBoost, so you might struggle to pair it with other speakers.
If you encounter any other variants of this speaker, let us know in the comments, and we'll update the review.
Popular Speaker Comparisons
The JBL Boombox 3 is the next generation of the JBL Boombox 2. Its solid build, IP67 rating for dust and water resistance, and carrying handle make it a great choice for outdoor parties. It also gets pretty loud, with less compression at max volume than the Boombox 2, so it can fill a big area with clear-sounding audio. It offers a better battery performance compared to the Boombox 2, as well as better bass reproduction and a more balanced sound profile overall. If you're looking for a more portable speaker that can get almost as loud as the Boombox 3, it's worth checking out the JBL Xtreme 4, though its default sound profile isn't as neutral, and it compresses more at max volume.
This speaker supports JBL's 'PartyBoost' feature, so you can connect it with other compatible JBL speakers like the JBL Xtreme 4, the JBL Charge 5, and the JBL Boombox 2. However, you can't connect it to older JBL speakers with a JBL Connect+ function like the JBL Charge 4 or the JBL Xtreme 2 or with speakers from JBL's PartyBox lineup like the JBL PartyBox Encore Essential.
See also our recommendations for the best portable Bluetooth speakers, the best Bluetooth speakers for bass, and the loudest Bluetooth speakers.
The JBL Boombox 4 offers mostly connectivity upgrades to the JBL Boombox 3, as well as a slightly louder top volume and a lighter design. Bluetooth LE support and Auracast compatibility are forward-thinking additions that aren't universally supported: there's no LC3 support for iOS devices, for example, and older JBL speakers can't connect via Auracast. The longer battery, with a swappable battery pack, is a definite bonus for outdoor use, though, as is the decreased weight. Still, when it comes to audio performance, the older generation has a more even default sound profile and less compression at max volume. It also yields lower latency via the standard SBC codec, too. While the fourth iteration has a more complete feature set, you might find better value with the third generation, given it'll likely be available on sale.
The JBL Boombox 3 and the JBL Xtreme 4 share a similar look that's derived from their distant ancestor: the original boombox. For all intents and purposes, the Xtreme 4 is a paired-down version of the Boombox 3 that sacrifices a more balanced sound and dynamics performance for a smaller footprint and lighter construction. The Boombox 3 is three times heavier and takes up too much space to fit in most bags. However, opting for the larger speaker rewards you with richer bass and smoother highs, as well as a louder max volume with less compression. The two have a very similar battery life, though the Boombox 3 requires AC power to charge, as opposed to the Xtreme 4, which can charge via USB.
The JBL Boombox 3 is a better speaker than the JBL Xtreme 3. The Boombox 3 has a more balanced sound profile that produces a more extended low-bass. It gets louder than the Xtreme 3, with significantly less compression at max volume, so audio quality sounds cleaner and clearer when you blast your favorite songs. It also has a much longer-lasting battery life of almost 30 hours on a single charge. That said, the Xtreme 3 is smaller and more portable. Its removable carrying strap even comes with a bottle opener built in to enjoy drinks with friends.
The JBL Boombox 3 is a better speaker than the JBL Boombox 2. The Boombox 3 produces a noticeably deeper bass than its predecessor and offers a more balanced sound profile overall. While it doesn't get as loud, it has significantly less compression present at max volume, resulting in cleaner and clearer-sounding audio when you max out the volume. It also has a longer-lasting battery life of almost 30 hours from a single charge, and it's better built.
Test Results
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