JBL Boombox 4 — Most Powerful Portable Waterproof Speaker with AI Sound Boost, 34h Playtime, and Auracast Connectivity

JBL Boombox 4: Power, Portability, and Pro Sound

Turn up the moment anywhere with the all-new JBL Boombox 4. Bigger, bolder, yet lighter than before, it delivers JBL Pro Sound with deep bass and clear highs for outdoor gatherings, beach days, and backyard hangouts. AI Sound Boost analyzes your music in real time, delivering more power with less distortion as you push the volume higher.

Designed for real-life moments, it houses two larger woofers, two tweeters, and three passive radiators to ensure every track lands with impact.

Sound that adapts to your vibe

With two Bass Boost modes — Deep Bass for a expansive wall of sound or Punchy Bass for tighter, livelier energy — you can tailor the bass response to match your mood or the surroundings.

• AI-driven tuning that adapts in real time for clearer sound at high volume
• Dual woofers and dual tweeters paired with three passive radiators for fuller stage-like audio
• Modern construction that balances robustness with easier portability

All-day listening without stopping the party

When a long session is on the cards, the Boombox 4 shines with up to 34 hours of playtime. Playtime Boost can extend that by up to 6 extra hours for multi-day events or back-to-back sessions.

• Up to 34 hours of playback on a single charge
• Playtime Boost adds up to 6 hours for extended use
• USB-C lossless audio support for high-fidelity playback from compatible sources

Built for the elements and travel

The IP68 rating means waterproof and dustproof protection—so rain, sand, and splashes don’t have to ruin the vibe. The design is surprisingly lighter and more portable, making it easier to move from the beach to the block and beyond.

• IP68 waterproof and dustproof for outdoor adventures
• Lighter, more portable build than prior generations
• Replaceable battery enables longer life with simple swaps

Share the vibe with Auracast

Using Auracast, you can stereo-pair two Boombox 4 units or connect multiple Auracast-enabled JBL speakers to spread the same playlist across larger areas.

• Stunning stereo pairing with the same playlist
• Multi-speaker linking to cover more space