Connect with us

Hi, what are you looking for?

New Products

JBL Drops Boombox 4 and PartyBox 720: Bigger Bass, Flashier Lights, and Louder Parties Than Your Neighbors Can Handle

JBL Boombox 4 and PartyBox 720 are the perfect portable party speakers for 2025 with booming bass, waterproof designs and epic lightshows.

JBL Boombox 4 and PartyBox 720 Portable Bluetooth Speakers

JBL isn’t just turning up the volume—it’s cranking the backyard chaos. The new JBL Boombox 4 and PartyBox 720 speakers have landed, promising deeper bass, brighter lights, and enough sound to get your neighbors Googling noise complaints. With AI-powered audio boosts and lighter, more powerful builds, these Bluetooth beasts are built for anyone who thinks “subtle” is a dirty word.

Dropping nearly 2 pounds from its frame, the JBL Boombox 4 now tips the scales at 12.8 lbs (5.8 kg)—but don’t mistake leaner for weaker. This beast cranks out 50% more power on battery, proving it shed the weight just to hit harder.

Portable party speakers are already a massive category for JBL, and the brand just keeps stacking the lineup higher. The new PartyBox 720 slots in as the latest expansion, aimed squarely at poolside DJs, backyard bass junkies, and anyone who thinks “subtle” is a personality flaw.

JBL Boombox 4: Bass Boost and IP68 Rating

jbl-boombox-4-pool-lifestyle

The Boombox 4 brings an upgraded Bass Boost with two flavors: Deep Bass for room-shaking lows and Punchy Bass when the playlist leans fast and heavy. Kick it on, and the JBL logos on the radiators light up in white or orange—because nothing says “serious bass” like glowing badges.

Inside, the Boombox 4 ditches its old subwoofer setup for two fresh midrange drivers and a third passive radiator, giving it a more balanced sound across the spectrum. Battery life gets a serious boost too—28 hours standard, or up to 34 with Playtime Boost—and now it’s user-replaceable, meaning this beast won’t be dead weight after a few years.

Add in IP68 waterproofing, dustproofing, and even USB-C lossless audio for wired purists, and it’s ready for anything from the pool to the beach.

jbl-boombox-4-beach-lifestyle

JBL Boombox 4 Key Specs

  • Audio Power:
    • AC mode: 2 x 65W woofers + 2 x 40W tweeters
    • Battery mode: 2 x 60W woofers + 2 x 40W tweeters
  • Frequency Response: 37 Hz – 20 kHz
  • Drivers: 2 x 5″ woofers, 2 x 0.75″ tweeters, 3 passive radiators
  • Battery Life: Up to 28 hours (34 hours with Playtime Boost)
  • Battery Type: Rechargeable Li-ion, 99 Wh, user-replaceable
  • Charge Time: ~3 hours
  • Connectivity:
    • Bluetooth 5.4 (A2DP 1.4, AVRCP 1.6)
    • USB-C (lossless wired playback + powerbank function)
    • Auracast + JBL PartyBoost for linking speakers
  • Special Features:
    • AI Sound Boost for real-time optimized audio
    • Dual Bass Boost modes (Deep & Punchy) with glowing JBL logos
    • IP68 waterproof + dustproof rating
    • Powerbank function for charging devices
  • Dimensions / Weight:
    • 20″ x 10″ x 8″ (51 x 26 x 21 cm)
    • 13 lbs / 5.89 kg

JBL PartyBox 720: Powerful Sound, Party Lights, and Outdoor-Ready Performance

jbl-partybox-720-karaoke-lifestyle

The PartyBox 720 rolls in as JBL’s biggest battery-powered party speaker yet, unleashing 800-watts RMS through dual 9-inch woofers and 30mm dome tweeters—enough to rattle a basketball court. Its new dynamic lightshow flips between starry and strobe effects in sync with your playlist, all fully customizable through the JBL PartyBox app.

Practical touches make it more portable too, with wider wheels, a sturdier handle, and 15 hours of battery life (plus 2 bonus hours from a 10-minute fast charge using dual replaceable batteries).

IPX4 splashproofing keeps it safe from spilled drinks, while Auracast expands the party by linking multiple JBL speakers. Inputs cover everything from USB-C to XLR for mics, guitars, and DJ rigs.

jbl-partybox-720-lifestyle

JBL PartyBox 720 Key Specs

  • Audio Power: 800 Watts RMS
  • Frequency Response: 32 Hz – 20 kHz
  • Drivers: 2 x 9-inch woofers, 2 x 1.25-inch dome tweeters
  • Battery Life: Up to 15 hours (plus 2 hours from a 10-min fast charge)
  • Battery Type: Dual replaceable Li-ion (99 Wh each)
  • Charge Time: ~3 hours
  • Connectivity:
    • Bluetooth 5.4 (A2DP 1.4, AVRCP 1.6)
    • USB-C charge out (supports fast charging)
    • Aux-in (3.5mm)
    • Line-in
    • 2 x XLR inputs (mics, guitars, or DJ gear)
    • Guitar input
  • Special Features:
    • Dynamic synced lightshow (customizable via JBL PartyBox app)
    • Auracast support for linking multiple speakers
    • JBL Original Pro Sound + AI Sound Boost
    • Dual mic & guitar inputs for live performances
    • IPX4 splashproof
  • Dimensions / Weight:
    • 37.1″ x 16.4″ x 16″ (94.2 x 41.6 x 40.6 cm)
    • 68.3 lbs / 31 kg
    • Wider wheels + ergonomic handle for transport

The Bottom Line

The JBL Boombox 4 and PartyBox 720 are unapologetically built for scale—lighter builds, smarter AI-powered audio, user-replaceable batteries, and full waterproofing/splashproofing mean JBL isn’t just chasing volume, it’s chasing longevity and versatility. With competition heating up from SonyTronsmart, and Soundcore, JBL’s edge comes down to execution: refined engineering, ecosystem features like Auracast and PartyBoost, and a reputation for pushing drivers harder without the distortion. If you want the tech that backs up the noise, JBL still knows how to run the party.

jbl-boombox-4-colors
JBL Boombox 4

Price & Availability:

The JBL PartyBox 720 is up for pre-sale now at $1,099 with a global release set for September 21, 2025. Or consider the PartyBox 520 if looking for something smaller and less expensive, $879 at Amazon

Advertisement. Scroll to continue reading.

The JBL Boombox 4 drops September 28th for $549.95 at Amazon in black, blue, or squad camo. However, the previous generation Boombox 3 may be a better deal until sold out, currently $399 at Amazon.











Click to comment

Leave a Reply

Your email address will not be published. Required fields are marked *

Advertisement

Latest Products

NIO ES8 EV Interior View

Car Audio

Dirac's Immersive Venue-Based Acoustics Technologies are being incorporated into the Third-Generation NIO ES8 EV.

Fosi Audio ZH3 DAC Headphone Amplifier Front Angle Fosi Audio ZH3 DAC Headphone Amplifier Front Angle

Headphone Amps

Fosi Audio ZH3 DAC/Headphone Amp/Preamp offers balanced outputs, ultra-low noise, high-res support, and replaceable op-amps for $199.99.

New HiFiMan Headphones in 2025 are Ananda Unveiled, Edition XV and HE600 New HiFiMan Headphones in 2025 are Ananda Unveiled, Edition XV and HE600

New Products

HiFiMAN launches three new planar magnetic open back headphones priced from $399 to $799, because why release just one?

REL Serie S Subwoofer Family 2025 REL Serie S Subwoofer Family 2025

New Products

Priced from $3,299 to $5,999, the REL Serie S 2025 subwoofers deliver deep, articulate bass, optional wireless, and Line Array towers because your neighbors...

Bang & Olufsen Beo Grace Wireless ANC Earbuds in hand at sunset Bang & Olufsen Beo Grace Wireless ANC Earbuds in hand at sunset

New Products

$1,500 Beo Grace earbuds from Bang & Olufsen push luxury, style, and audio performance but don’t forget the optional $400 leather pouch.

David Beckham wearing black Bowers & Wilkins Px8 S2 wireless headphones David Beckham wearing black Bowers & Wilkins Px8 S2 wireless headphones

New Products

Bowers & Wilkins Px8 S2 delivers flagship wireless sound, upgraded ANC, and aptX lossless at $799—lighter, smaller, and a strong value vs Focal and...

Gift Ideas?

Vinyl Music Lover Gift Guide 2025

Gift Guides

A new turntable, phono stage, cartridge or speaker could be the upgrade you've been looking for or the perfect gift for any vinyl lover.

You May Also Like

News

After three days roaming the hallowed halls of CEDIA Expo 2025, here are our picks for "Best in Show" for home theater systems.

New Products

JBL's SoundGear Sense and Tune 310C Earphones offer better sound quality, improved levels of comfort, and excellent value for the money.

New Products

JBL's Live TWS 3 Series Earbuds feature a smart charging case that allows you to check messages and control smartphone functions whilst the phone...

New Products

JBL's Bar 1000 MK2 upgrades its Dolby Atmos soundbar with 960W power, wireless rears, and a 10-inch sub—true surround without the clutter.

New Products

TCL’s TP200K and TP300K party speakers bring solid specs and features to challenge Sony and JBL—perfect for any gathering, from Bar Mitzvahs to dog...

New Products

Tronsmart Halo 300 crashes the 2025 party speaker scene. How does it stack up against Sony’s ULT Tower 9 and JBL's PartyBox Series?

Articles

Improve the performance of your stereo or home theater system with our favorite subwoofers from RSL, SVS and JBL for any budget.

New Products

The $349 Beosound A1 3rd Gen adds sound upgrades, fresh colors, and the same IP67 waterproof build—still one of the most stylish portable Bluetooth...

Advertisement

ecoustics is a hi-fi and music magazine offering product reviews, podcasts, news and advice for aspiring audiophiles, home theater enthusiasts and headphone hipsters. Read more

Copyright © 1999-2024 ecoustics | Disclaimer: We may earn a commission when you buy through links on our site.



SVS Bluesound PSB Speakers NAD Cambridge Audio Q Acoustics Denon Marantz Focal Naim Audio RSL Speakers