JBL Boombox 4 – Most Powerful Portable Waterproof Speaker with Massive Pro Sound, Up to 34 Hours of Playtime, & Multi-Speaker Connection by Auracast™ (Blue)]1

Description

JBL Boombox 4 – Most Powerful Portable Waterproof Speaker with Massive Pro Sound

The JBL Boombox 4 is the ultimate portable speaker for those who demand powerful, room-filling audio wherever they go. As the most powerful JBL portable speaker yet, it delivers massive JBL Pro Sound with deep, impactful bass that brings every track to life .

Massive JBL Pro Sound with AI Sound Boost

The redesigned Boombox 4 packs two larger 5-inch woofers, two 0.75-inch tweeters, and three passive radiators – one more than its predecessor – delivering more power and clarity to every song . The intelligent AI Sound Boost technology analyzes your music in real time and automatically adjusts the sound to deliver greater power while minimizing distortion, even at maximum volume . With a frequency response stretching from 37Hz to 20kHz, you will experience everything from deep bass notes to crystal-clear highs .

Up to 34 Hours of Playtime

The party never has to stop. The Boombox 4 delivers up to 28 hours of playtime on a single charge. Forgot to recharge? JBL Playtime Boost adds another 6 hours, giving you a total of up to 34 hours of non-stop music . When you need a quick boost, just 10 minutes of charging provides two additional hours of playback .

IP68 Waterproof and Dustproof

Ready for any adventure, the Boombox 4 carries an IP68 rating, making it completely waterproof and dustproof . Whether you are at the beach, by the pool, or caught in unexpected rain, this speaker can handle it all. It can even be submerged in water, giving you peace of mind for any outdoor gathering .

Dual Bass Boost Modes

Fine-tune your bass exactly how you like it. Press the Bass Boost button on the top panel once, and the JBL logo glows orange, switching you into Deep Bass mode for rich, immersive low-end performance. Press it twice, and the logo turns white, activating Punchy Bass mode for tighter, more energetic beats .

Multi-Speaker Connection with Auracast

Want to share the fun with everyone? With Auracast technology, you can easily pair two Boombox 4 speakers for a wider stereo sound stage, or connect multiple Auracast-compatible JBL speakers to fill every corner of the party with music .

Lossless Audio via USB-C

For audiophiles who demand the best sound quality, simply connect the Boombox 4 to your laptop or audio device via the USB-C port to enjoy lossless audio playback instantly .

Power Bank Functionality

The Boombox 4 doubles as a power bank. Use the USB-C output port to charge your mobile devices – phones, tablets, or smartwatches – during parties, gatherings, or outdoor trips .

Bigger Sound, Lighter Design

The Boombox 4 has been redesigned to be larger yet lighter than its predecessor – 13 percent lighter at just 5.89 kg (13 lbs) . The built-in carrying handle makes it easy to transport to the beach, the city, or your backyard .

Replaceable Battery

Want your speaker to last even longer? The rechargeable 99.02Wh lithium-ion battery pack can be replaced in three simple steps, giving your Boombox 4 a new life when needed (replacement battery sold separately) .

Sustainable Construction

The JBL Boombox 4 incorporates post-consumer recycled plastic and recycled fabric for the speaker grille. It is packaged in FSC-certified paper printed with soy ink, reflecting JBL’s commitment to sustainability .