The JBL Boombox 4 brings the boom wherever we go. It’s portable, waterproof, and dustproof—so we never stress about weather or spills. We get massive JBL Pro Sound with a Bass Boost that lets us pick between deep or punchy bass, depending on the vibe. Boombox 4 boasts bigger sound than ever before, lighter for easier carry, and up to 34 hours of playtime on a single charge.

Unbeatable JBL Pro Sound with AI Sound Boost
We’re talking massive sound with deep and punchy bass. The redesigned JBL Boombox 4 packs in two bigger woofers, two tweeters and three passive radiators, so every track hits harder and sounds cleaner. And with AI Sound Boost, you don’t have to lift a finger—this smart tech analyzes the music in real time and adjusts the sound to give us more power with less distortion, even when it’s turned all the way up.

Up to 34 hours of playtime
Keep the vibe alive from party to party… to party, for up to 28 hours on a single charge. Forgot to charge up for the next one? It’s all good. JBL Playtime Boost adds up to 6 hours of extra popping, locking, sliding, or whatever moves you got left in that bag.

Waterproof and dustproof
The JBL Boombox 4 is IP68 waterproof and dustproof, so it can handle whatever the weather—or our clumsiest friends—throw at it.

Multi-speaker connection by Auracast™
Wouldn't it be great to share the whole mood with the whole crew? With Auracast™, effortlessly stereo pair two Boombox 4 speakers for a wider sound stage or connect multiple Auracast™-enabled JBL speakers to cover more ground with the same playlist.

Two Bass Boost settings to match our vibe
When it comes to bass, we like having options. Fire up the JBL Boombox 4 and you’ll get that classic JBL signature bass we all love. Want to take it deeper? Hit the Bass Boost button on the top panel—the JBL Horn mark glows orange, and boom, you’re in Deep Bass mode, where those two woofers and three passive radiators go all in. Want something tighter and more energetic? Tap the button once more, the Horn mark turns white, and you’re in Punchy Bass mode. Whatever the mood, we’ve got the bass to match.

Bigger and louder, but lighter
The JBL Boombox 4 sounds bigger and better than ever—but here’s the real win: we redesigned it to be lighter than before. So now it’s way easier to set the tone wherever we go.

Lossless audio playback
Want to hear every detail? Plug into your laptop or other audio device using the Boombox 4’s USB-C port* to enjoy lossless audio playback. It's perfect for real audio fans who want more from their music. Just make sure your source offers lossless audio. *Requires compatible lossless audio content from supported apps or services.

Recycled plastic and fabric, plus FSC certified paper packaging
The JBL Boombox 4 incorporates post-consumer recycled plastic and recycled fabric for the speaker grille. It's also packaged in FSC-certified paper printed with soy ink.

Replaceable battery
Want even more life out of your speaker? Replace the rechargeable battery in three simple steps, and your JBL Boombox 4 will be back at full power. **Replaceable battery sold separately

Specs
General Specifications
Power Input: 100 - 240 Vac; 50/60 Hz
Signal-to-Noise Ratio: > 80 Db
Output power (W):
(AC mode) - 2 x 65W RMS Woofer, 2 x 40W RMS Tweeter (Battery mode) - 2 60W RMS Woofer, 2 x 40W RMS Tweeter

Audio Specifications
Frequency Response: 37Hz - 20 kHz
Transducer: 2 x 5 inch / 2 x 123mm woofer, 2 x 0.75 inch / 2 x 20mm Tweeter, 2 pcs circle + 1 pc racetrack passive radiator

Dimensions
Dimensions (Width x Height x Depth) (in): 20 x 10 x 8
Dimensions (Width x Height x Depth) (cm): 51 x 26 x 21
Net Weight (kgs): 5.89
Net Weight (lbs): 13

Control and Connection Specifications
Connection: : AC-in, USB-C
Bluetooth Profile: A2DP 1.4, AVRCP 1.6
Bluetooth Transmitter Frequency Range (GHz): 2.4 - 2.4835
Bluetooth Transmitter Modulation: GFSK, π/4 DQPSK, 8DPSK
Bluetooth Transmitter Power: ≤ 14dBm (EIRP)
Connection Ports: AC-in, USB-C
Bluetooth version: 5.4
Bluetooth frequency: 2.4 GHz - 2.4835 GHz
Bluetooth profiles: A2DP 1.4, AVRCP 1.6
Bluetooth transmitted modulation: GFSK, π/4 DQPSK, 8DPSK
Bluetooth transmitter power: ≤ 14dBm (EIRP)

Battery
Battery Charge Time (hours): 3
Battery Type: Rechargeable Li-ion Battery Pack 99.02Wh
Cable Length (ft): 6.6
Cable Length (m): 2
Cable Type: AC Power Cable
Maximum music playing time (hrs): 34

Features
AC power cable (type varies by regions): Yes
AI Sound Boost: Yes
Supports Auracast: Yes
IP Code: IP68
Dustproof: Yes
Wireless: Yes
Bluetooth: Yes
Powerbank: Yes
Waterproof: Yes