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JBL PartyBox Ultimate 1100W Wireless Party Speaker

BH #JBLPARTYBOXU • MFR #JBLPARTYBOXULTAM
39 reviews
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JBL PartyBox Ultimate 1100W Wireless Party Speaker
Key Features
  • 1100W of RMS Output Power
  • Six Drivers for Balanced Audio
  • Dolby Atmos Support for 3D Sound
  • Multi-Color Lightshow Syncs to the Beat
Fill your next party with balanced and immersive Dolby Atmos music, live guitar, singing, and a dazzling light show when using the PartyBox Ultimate 1100W Wireless Party Speaker from JBL. Fill large spaces with dual 9" woofers, 4.5" midrange drivers, and 2.75" tweeters that pump out a massive 1100W of sound. Both dual-band Wi-Fi and Bluetooth streaming are supported for playback from mobile playlists, a home network library, or online streaming services. Live music and karaoke are also options with dual mic inputs and a guitar jack. All of this is supported by a multi-colored lightshow with starry LEDs, cool light trails, strobe effects, and ground illumination, all of which pulsate in sync with the beat of the music.
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JBL PartyBox Ultimate Overview

From Manufacturer

Fill your next party with balanced and immersive Dolby Atmos music, live guitar, singing, and a dazzling light show when using the PartyBox Ultimate 1100W Wireless Party Speaker from JBL. Fill large spaces with dual 9" woofers, 4.5" midrange drivers, and 2.75" tweeters that pump out a massive 1100W of sound. Both dual-band Wi-Fi and Bluetooth streaming are supported for playback from mobile playlists, a home network library, or online streaming services. Live music and karaoke are also options with dual mic inputs and a guitar jack. All of this is supported by a multi-colored lightshow with starry LEDs, cool light trails, strobe effects, and ground illumination, all of which pulsate in sync with the beat of the music.

Dolby Atmos Sound
When you pair the PartyBox Ultimate with access to a compatible Hi-Fi music service, you can use the speaker to play Dolby Atmos-compatible tracks. Dolby Atmos delivers 3D spatial effects that add a heightened level of immersion to your music.
Self-Tuning
Any location you place the PartyBox Ultimate is a good one, thanks to its built-in self-tuning feature. Every time you turn on the speaker, a self-tuning function will run to automatically tune the quality of audio output to match its current surroundings.
Go Even Bigger
If 1100W of power are not enough for you, you can go even bigger by pairing two or more PartyBox Ultimate speakers together.
Surprisingly Mobile
You'd think that with such a large speaker it would difficult to move around, but a built-in handle and wheels makes it easy to place the PartyBox Ultimate exactly where you want it.
JBL One
Take control of the PartyBox Ultimate with the JBL One mobile app. JBL One lets you customize light colors and patterns, setup multi-speaker pairing, adjust EQ settings, manage playback, and more.
JBL PartyPad
Built into the top panel of the speaker is the JBL PartyPad. Tap, hold, and slide on it with your fingertip to remix tracks with DJ-quality effects.
Additional Features
  • Karaoke EQ
  • IPX4 splash-proof
  • Integrated cable management system
  • USB port for MP3 and WAV playback or mobile charging
  • Works with Google Home
  • Works with Apple AirPlay
  • Works with Alexa
  • Chromecast built-in
UPC: 050036396103

JBL PartyBox Ultimate Specs

Key Specs
Power Output
1100 W
Drivers
2x 9" / 23 cm Woofers
2x 4.5" / 11 cm Midranges
2x 2.75" / 7 cm Tweeters
Frequency Response
30 Hz to 20 kHz
Built-In Mic
No
Bluetooth
Bluetooth 5.3
Wi-Fi
Wi-Fi 6 (802.11ax)
Media/Memory Card Slot
No
Speaker System
Power Output
1100 W
Drivers
2x 9" / 23 cm Woofers
2x 4.5" / 11 cm Midranges
2x 2.75" / 7 cm Tweeters
Frequency Response
30 Hz to 20 kHz
Signal to Noise Ratio
>80 dB
Microphone
Built-In Mic
No
Bluetooth Connectivity
Bluetooth
Bluetooth 5.3
Supported Bluetooth Profiles
A2DP 1.3
AVRCP 1.5
Transmitter Power
15 dBm
Bluetooth Transmitter Modulation
π/4 DQPSK, 8DPSK, GFSK
Additional Wireless Connectivity
Wi-Fi
Wi-Fi 6 (802.11ax): Dual-Band (2.4 & 5 GHz)
Connection Protocols
AirPlay, Chromecast built-in
Wired Connectivity
Inputs/Outputs
1x USB-A (Audio/Power) Input
2x 1/8" / 3.5 mm Mono (Microphone) Input
1x 1/8" / 3.5 mm Stereo (Audio) Input
1x 1/4" TS (Audio) Input
Power
USB Power
5 VDC at 2.1 A
Input Power
100 to 240 VAC, 50 / 60 Hz
Physical
Color
Black
Media/Memory Card Slot
No
Environmental Resistance
Water-Resistant (IPX4)
Dimensions (W x H x D)
17.9 x 41.3 x 17.3" / 455 x 1049 x 440 mm
Weight
87.1 lb / 39.5 kg
Packaging Info
Package Weight
98 lb
Box Dimensions (LxWxH)
45.25 x 20.5 x 20.25"

JBL PartyBox Ultimate Reviews

JBL PartyBox Ultimate 1100W Wireless Party Speaker

By Eric
Rated 5 out of 5
Date: 2026-07-22

this JBL speaker is the best I've ever heard. I used it for a backyard event and didn't even need a DJ. The bass is incredible. I was going to get the Sony Tower until I heard this JBL. The best bluetooth Speaker in the world to me and I'm sure others will agree. I wish I took pics to show, but we were having so much fun I forgot.

Amazing! one slight complaint

By Itsame
Rated 5 out of 5
Date: 2026-01-07

I got this more than a year ago, and honestly, it’s been amazing! I’ve had so many crazy fun times with my friends—like, it’s by far the best one out there. The lights are cool, but I wish you could pick two colors at once instead of it just auto-picking the opposite on the color wheel. More animations or party effects would make it even crazier. Even with that, this thing is seriously awesome—I’ve used it nonstop and it’s been a total blast every single time!

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