JBL has officially unveiled the Boombox 4, a major update to one of its most recognizable portable speaker lines. Known for delivering massive sound and chest-thumping bass, the Boombox series has always stood out in the portable audio market. With this fourth generation, JBL introduces more power, AI-driven sound optimization, and a lighter body—all while maintaining the rugged design and long battery life that fans expect. The Boombox 4 isn’t just a party speaker; it’s designed to be a portable powerhouse that brings festival-quality sound wherever you go.
The Boombox 4 retains its iconic cylindrical form and oversized handle but now weighs just 13 lbs—almost 2 pounds lighter than its predecessor. This makes it easier to carry without sacrificing performance. The updated handle offers better grip and stability, while the IP68 rating ensures it can withstand dust, spills, and even full submersion in water.
JBL has ramped up performance with 50% more output in battery mode. The Boombox 4 houses 2 x 60W RMS woofers and 2 x 40W RMS tweeters, supported by a third passive radiator and upgraded mid-range drivers. The result is deeper bass, stronger mids, and crisp highs that fill large outdoor spaces with ease.
One of the headline upgrades is AI Sound Boost, JBL’s real-time audio optimization feature. It analyzes music playback and dynamically adjusts output to minimize distortion, manage power, and enhance clarity—even at maximum volume. Whether blasting EDM or playing acoustic tracks, the Boombox 4 adapts for consistent, punchy sound across genres.
The Boombox 4 supports Auracast, a protocol that allows multiple compatible JBL speakers to link in stereo or party mode. This creates wider coverage and synchronized sound across spaces, making it perfect for larger gatherings.
JBL has given the Boombox 4 an audiophile-friendly edge with USB-C lossless audio playback. By bypassing Bluetooth compression, users can enjoy higher fidelity sound when connected directly to laptops or smartphones.
Battery life is another strong point. The Boombox 4 offers up to 28 hours of playtime, extendable to 34 hours with Playtime Boost. It fully recharges in about three hours and doubles as a power bank, charging other devices via its USB ports. Importantly, JBL made the internal battery replaceable, giving the speaker greater long-term value.
The JBL Boombox 4 is priced at $549.95 and will be available in Black, Blue, and Squad (camouflage) finishes. Pre-orders are live on JBL’s official website, with general availability beginning September 28, 2025.
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The Boombox 4 is a statement piece in the portable speaker market. It offers a rare balance between sheer volume and refined clarity, ensuring that the sound doesn’t just get louder but actually improves in quality. The AI Sound Boost system works impressively well, keeping distortion at bay and optimizing playback across genres. Bass response remains powerful, but mids and highs are given more room to shine, making the Boombox 4 more versatile than its predecessors.
Portability is another win. JBL’s decision to reduce weight while increasing output makes the Boombox 4 easier to carry without feeling underpowered. The addition of Auracast means users can scale sound coverage across multiple units effortlessly, turning a backyard party into a full festival setup.
The USB-C lossless playback feature also sets the Boombox 4 apart, appealing to users who want high-quality sound without the compression of Bluetooth. Combined with a replaceable battery, rugged durability, and long runtime, this speaker feels future-proof.
The only drawback may be the price. At $549.95, it sits at the premium end of portable Bluetooth speakers. However, considering the performance, durability, and added features, the Boombox 4 justifies its cost for those who prioritize quality and longevity.
If you want a portable speaker that doubles as a full-scale party system, the Boombox 4 is one of the best options available. Its combination of raw power, AI-enhanced clarity, rugged build, and long battery life makes it ideal for outdoor events, poolside parties, and extended road trips. While casual listeners may find it overkill, serious music lovers and event hosts will appreciate the investment.
The JBL Boombox 4 raises the bar for portable Bluetooth speakers. With its lighter design, AI-driven sound optimization, and audiophile-friendly features like USB-C lossless playback, it represents both power and precision. Though it comes at a premium price, the Boombox 4 is built for users who want professional-grade performance in a portable form. For those looking to own the ultimate festival-ready speaker, JBL has delivered another winner.
Q1: How powerful is the JBL Boombox 4 compared to the Boombox 3?
The Boombox 4 delivers 50% more output in battery mode, with 2 x 60W RMS woofers and 2 x 40W RMS tweeters, plus upgraded mid-range drivers.
Q2: Does the JBL Boombox 4 support waterproofing?
Yes, it comes with an IP68 rating, making it dustproof and waterproof, even capable of surviving full submersion.
Q3: What is JBL’s AI Sound Boost feature?
AI Sound Boost optimizes audio in real time, reducing distortion and improving clarity at high volumes, adapting automatically across music genres.
Q4: How long does the JBL Boombox 4 battery last?
It lasts up to 28 hours on a single charge, and up to 34 hours with Playtime Boost enabled. The battery is also replaceable.
Q5: What is the price of the JBL Boombox 4 in the US?
The JBL Boombox 4 is priced at $549.95 and will be available from September 28, 2025, in Black, Blue, and Squad (camouflage).
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