The JBL PartyBox Ultimate unleashes 1,100 W RMS of Original JBL Pro Sound through dual 242 mm subwoofers, dual 120 mm mid-range drivers, and dual 74 mm tweeters—enough to fill two basketball courts with thunderous bass, clear mids, and sparkling highs. Its full-panel, multi-dimensional RGB lightshow projects starry-night effects, light trails, strobes, and surface-casting patterns that sync to your music via top-panel dials or the JBL One App. Stream high-definition and Dolby Atmos tracks over Wi-Fi (subscription required), switch seamlessly to Bluetooth 5.3 or aux input, and keep the party going rain-or-shine with an IPX4 splashproof build and rugged wheels plus a sturdy handle for easy transport.
Dual mic and guitar inputs with karaoke EQ tuning let you bring live performances into the mix, while USB-A playback and multi-speaker pairing (stereo or wireless mesh) expand your soundstage to any size event.
Key Features
1,100 W RMS JBL Original Pro Sound: 2×242 mm subwoofers; 2×120 mm mid-range; 2×74 mm tweeters
Dolby Atmos 3D spatial audio streaming via Wi-Fi (high-definition subscription required)
Full-panel RGB lightshow: starry-night, light trails, strobes; music-sync control onboard or in JBL One App
Bluetooth 5.3 and dual-band Wi-Fi for HD audio plus 3.5 mm aux input for legacy devices
IPX4 splashproof enclosure; concealed handle and wide wheels for effortless mobility
Multi-speaker connection: stereo pair two Ultimate units or link multiple PartyBoxes wirelessly
Dual ¼″ mic and ¼″ guitar inputs with karaoke EQ; USB-A port for flash-drive audio playback
Includes AC power cord, quick-start guide, safety sheet, and warranty card
Technical Specifications
Specification
Detail
Max Power Output
1,100 W RMS
Drivers
2×242 mm subwoofers; 2×120 mm mid-range; 2×74 mm tweeters
Frequency Response
30 Hz – 20 kHz (–6 dB)
Signal-to-Noise Ratio
> 80 dB
Connectivity
Bluetooth 5.3; dual-band Wi-Fi; 3.5 mm aux; USB-A audio in