JBL just launched two new speakers that aim to redefine portable party sound: the powerful PartyBox 720 and the upgraded Boombox 4.
TLDR:
- JBL PartyBox 720 is the company’s largest battery-powered speaker ever, delivering 800W and 15 hours of wireless playtime
- Boombox 4 brings improved bass with two new woofers, 28 hours of battery life, and a lighter, more portable design
- Both speakers feature AI Sound Boost for louder audio with less distortion and Auracast for multi-speaker pairing
- Preorders are live now, with the PartyBox 720 shipping on September 21 and Boombox 4 on September 28
What Happened?
JBL announced two new wireless speakers designed for serious sound lovers and party hosts alike. The PartyBox 720, now the largest battery-powered speaker JBL has ever made, and the more portable but still powerful Boombox 4, both come packed with new features and upgrades over previous models.
PartyBox 720 is Built for Big Sound and Bigger Parties
JBL’s new PartyBox 720 is a beast in both size and sound. It measures 37 inches tall and weighs a hefty 68 pounds. Despite its size, it remains portable thanks to built-in wheels and a sturdy handle.

It delivers a massive 800W of power and offers up to 15 hours of battery-powered playtime. Inside, you’ll find two 9-inch woofers and 30mm dome tweeters for a powerful and immersive audio experience. The speaker also features AI Sound Boost, a technology designed to increase volume without distortion.
Other highlights include:
- Auracast support for syncing with other JBL speakers
- A built-in futuristic light show that syncs to your music
- Two XLR ports to connect microphones, guitars, or DJ gear
- IPX4 water resistance to survive light splashes and spills
JBL is clearly targeting the party crowd with this model. Priced at $1,099, it’s more affordable than some premium competitors like Marshall’s $1,300 speaker. Preorders are open now, with shipments starting on September 21.
Boombox 4 Delivers Serious Bass in a Portable Package
The JBL Boombox 4 is a more compact alternative but still packs plenty of power. Weighing 13 pounds, it’s two pounds lighter than its predecessor, the Boombox 3, making it easier to carry around.
It now includes two woofers and offers two bass modes:
- Deep Bass for rich, booming lows
- Punchy Bass for upbeat, lively sound
Other key features:
- Up to 28 hours of battery life
- Replaceable battery design for long-term usability
- IP68 water and dust resistance
- AI Sound Boost and Auracast connectivity for multi-speaker setups
The Boombox 4 is priced at $550 and comes in three color options. It ships on September 28, just a week after the PartyBox 720.
What TechKV Thinks?
I love when brands build products that actually solve a need instead of adding fluff. The PartyBox 720 is for people who take partying seriously. It’s big, it’s bold, and it has all the bells and whistles to make any event unforgettable. Whether it’s karaoke, a backyard bash, or a wedding afterparty, this thing will deliver.
The Boombox 4, on the other hand, is perfect for everyday use. Whether you’re chilling at the beach or throwing a rooftop hangout, it offers the right mix of sound quality and portability. Plus, those bass modes are a very cool touch.
If you’ve been waiting for a speaker that can go loud, last long, and stay wireless, JBL’s new lineup deserves a spot on your radar.