The ultimate party speaker for serious party lovers, the JBL PartyBox Ultimate truly lives up to its name. Delivering a massive 1,100 watts RMS of power, it features dual 9-inch subwoofers that produce deep, thunderous bass capable of filling large spaces with immersive sound. A signature highlight of the JBL PartyBox series is its dynamic lighting system, which offers fully customizable colors and lighting patterns that sync with the music to elevate the party atmosphere.

Adding even more excitement is the JBL PartyPad, an interactive control surface that lets you trigger sound effects in real time. The speaker also includes dedicated inputs for microphones and musical instruments, making it perfect for karaoke, live performances, or DJ-style entertainment. Connectivity is equally impressive, with support for both Bluetooth 5.3 and Wi-Fi 6, ensuring stable, high-quality wireless streaming.

No matter where the party takes place, the built-in Self Tuning feature automatically optimizes sound performance for indoor or outdoor environments. With an IPX4 water-resistance rating, splashes and spills won’t stop the fun. Whether you’re hosting an intimate gathering or a large-scale celebration, the JBL PartyBox Ultimate delivers powerful, room-filling sound and a complete set of features that make it a must-have for unforgettable parties.

Pros

• Extremely powerful 1,100-watt RMS output
• Supports both Bluetooth and Wi-Fi connectivity
• Dedicated inputs for microphones and musical instruments
• Built-in PartyPad for real-time sound effects
• Compatible with a dedicated control application
• IPX4-rated water resistance
• Integrated handle and wheels for easier transportation

Cons / Notes

• Large size and heavy weight
• No built-in battery (AC power required)

Features

• Maximum output power of 1,100 watts RMS
• Premium JBL Pro Sound performance
• Total of 6 speaker drivers: 2 x 2.75″ tweeters, 2 x 4.5″ mid-range drivers, and 2 x 9″ subwoofers
• Supports Dolby Atmos audio (*content or streaming service must also support Dolby Atmos)
• Self Tuning function automatically adjusts sound for indoor or outdoor use
• Customizable LED lighting effects adjustable directly on the speaker or via the app
• JBL PartyPad with 3 interactive sound effect controls supporting tap, hold, and slide gestures
• Multi-speaker connectivity for pairing two speakers together
• Microphone and instrument inputs with independent volume and gain controls
• USB-A port for audio playback from USB drives (*supported formats: .mp3 / .wma / .wav)
• Compatible with the JBL One app for full control and customization
• Wireless connectivity via Bluetooth 5.3 and dual-band Wi-Fi 6 (802.11ax 2.4 & 5 GHz)
• IPX4 water-resistant design
• Built-in handle and wheels for convenient mobility

Ideal For

• Smartphone, tablet, and computer music listeners

Connectivity

• AUX (input) x1
• MIC (input) x2 (*one input also supports musical instruments)
• USB-A (*for playback from USB drives)
• Bluetooth 5.3
• Wi-Fi 6

In the Box

• JBL PartyBox Ultimate speaker
• Power cable (2 meters)
• User manual

Materials

• Polycarbonate