”The Xtreme 4 is the third Award-winner from JBL this year and a great option for music fans looking for a big speaker to use on the go.” ’What Hi-Fi?’ 2025 award-winner.

Listen louder, with AI tech
When it’s time to listen loud, it’s time to bring out the JBL Xtreme 4. Packing an impressive 100 watt amp (total), two-way stereo speakers and pumping bass radiators, the JBL Xtreme 4 packs a punch. What’s more, the Xtreme 4 uses new AI Sound Boost technology for the highest volumes and lowest distortion. Analysing the signal, in real time, it pushes the drivers’ potential to their full capacity, while also reducing distortion.

Listen for longer and charge your smartphone, too
AI tech doesn’t just improve the sound quality, it helps improve battery life, too. With up to 24 hours of playback time, you’ll be able to party through the night and into the next day, too, before needing to recharge. If you need a quick boost, ten minutes of charge is all that’s needed for another two hours of music. A USB output means that you can also charge up your smartphone on the move.

Strap up for the journey
Supplied with retaining hooks and strap, the Xtreme 4 is perfectly portable and ideal for carrying on camping trips, hikes and festivals. A handy built-in bottle opener helps keep you refreshed once you’ve arrived.

Designed for extremes
Built to a robust standard, the Xtreme is designed for life on the move. Waterproof and dustproof to IP67 standards, the Xtreme 4 is more than capable of tackling muddy festival fields, sunny beaches and everything in between. Take it to a festival, a friend's BBQ or even backpacking - the JBL Xtreme 4 is built for adventure.

Multi-speaker connection by Auracast
Connect multiple JBL PartyBoost speakers together and you've got yourself instant music for a house party, with music wherever you choose - indoors or out. PartyBoost also lets you pair twin Xtreme 4 speakers together, for even wider, stereo sound.

JBL Portable app
Take full control of your speakers’ settings with the JBL Portable app. Available for Apple iOS and Android, the app lets you tailor the sound with EQ settings, receive updates and unlock features – all straight from your smartphone.

Hear the bigger picture, with the JBL Xtreme 4.