Overview

A backyard party or a small live gig doesn't need a stack of separate gear — the JBL PartyBox Stage 320 rolls in as one unit that can cover both. It's built to move from the garage to wherever the night happens, then get people dancing the moment it turns on.

Two 6.5-inch woofers and a pair of 25mm dome tweeters push 240W of output, while JBL's AI Sound Boost reads the signal in real time and predicts how the drivers will move, so the bass stays controlled instead of distorting as you turn things up. A built-in lightshow of starry lights, light trails, and strobe effects syncs to the beat, and dual mic and guitar inputs let you plug in directly for karaoke or an acoustic set. A telescopic handle and wide, sturdy wheels make it easy to roll the speaker into place, and an IPX4 splashproof rating means a little rain or a stray pool splash won't end the night.

Battery life runs up to 18 hours, and because the pack is user-replaceable, a spare JBL Battery 400 (sold separately) keeps things going well past that — a 10-minute fast charge alone adds about 2 more hours of playtime. Auracast lets you connect multiple JBL PartyBox speakers wirelessly for a bigger event, or pair two Stage 320 units in stereo for a wider soundstage, and the JBL PartyBox app puts EQ settings and lightshow colours and patterns in one place.

Simcoe Audio Video Insight

The Stage 320's dual mic and guitar inputs mean you're not renting separate PA gear for a karaoke night or an acoustic set — plug in and go. Because the battery is user-replaceable rather than built in, we'd recommend picking up a spare JBL Battery 400 if you're running events longer than an evening, since swapping a pack takes seconds compared to waiting out a full recharge. And since it charges from a standard AC power cord, it's just as easy to keep topped up between bookings as it is to use on-site.

More Info

Why the JBL PartyBox Stage 320 Stands Out

Buyer's Guide

Who It's For

• Karaoke and Acoustic Performers: Dual mic and guitar inputs turn the Stage 320 into a portable PA without renting extra gear.
• Backyard and Off-Site Party Hosts: A telescopic handle and wheels make it practical to roll into a driveway, hall, or community room on your own.
• Multi-Speaker Setups: Auracast support lets the Stage 320 pair with other JBL Auracast-enabled PartyBox speakers as an event grows.

How It Compares

Next to the JBL PartyBox 520, the Stage 320 is the lighter, more portable option: 240W and 16.5 kg versus the 520's 400W and 26 kg, with a longer runtime at up to 18 hours against the 520's 15. The 520 steps up to two XLR inputs for a mic, guitar, or DJ console, while the Stage 320 uses simpler mic and guitar inputs suited to casual performances rather than professional PA use. Both share Auracast multi-speaker pairing, AI Sound Boost, and a synced lightshow, so the choice comes down to how much output you need versus how much speaker you want to move.