JBL Boombox 4 - Most Powerful Portable Speaker with Pro Sound, 34h Playtime, Auracast, IP68

Take the party anywhere with bigger, bolder sound

The JBL Boombox 4 redefines portable power. It combines a larger, lighter chassis with a seriously capable audio system, designed to keep every beat clear and impactful whether you’re at the beach, backyard, or park. You’ll notice the combination of scale and control: loud without losing detail, and a bass response that you can tailor to the moment.

Richer sound through Pro tech and smart tuning

Key audio enhancements include a redesigned layout with two bigger woofers, two tweeters, and three passive radiators. Coupled with AI Sound Boost, the speaker analyzes tracks in real time to optimize output and minimize distortion at higher volumes. This means cleaner highs and deeper lows as your party energy climbs.

• Two bigger woofers, two tweeters, and three passive radiators deliver a fuller, more dynamic sound.
• AI Sound Boost dynamically enhances power while reducing distortion at volume peaks.

All-day battery and flexible playback

With up to 34 hours of playtime on a charge, you can keep the vibe going from one event to the next. Playtime Boost adds up to 6 additional hours for longer sessions, making it easier to extend the fun without pauses.

• Up to 34 hours of playback on a single charge.
• Playtime Boost adds up to 6 extra hours when needed.

Weather-ready durability and outdoor versatility

The Boombox 4 is IP68-rated for waterproofing and dust protection, so rain, sand, or spray won’t stop the music. Its redesigned shell is larger in presence but lighter to carry, making it easier to transport to outdoor venues.

• IP68 waterproof and dustproof for rugged outdoor use.
• Lighter design without sacrificing on audio impact or volume.

Sharing sound with Auracast and bass modes

Multi-speaker connectivity via Auracast lets you pair two Boombox 4 units for a wider stage, or link multiple Auracast-enabled JBL speakers to cover more area with the same playlist. You also gain flexible bass options to tailor the mood on the fly.

• Auracast enables stereo pairing and multi-speaker setups.
• Two Bass Boost modes let you switch between Deep Bass and Punchy Bass depending on the moment.

Connectivity and sound fidelity

For high-resolution listening, the USB-C port supports lossless audio playback when paired with compatible devices and content. This is ideal for users who want to explore every sonic detail in supported formats.

• USB-C port for lossless audio when available.
• Fast, reliable connections for flexible setups.

In short, the JBL Boombox 4 aims to give you commanding, clear sound, extended playtime, and practical durability for real-life use—while leaving room for personal mood and environment to shape the vibe.