The JBL Partybox 320 (officially PartyBox Stage 320) is the successor to the popular Partybox 310 and has been available since May 2024. The most important new feature: a swappable battery that theoretically extends playtime indefinitely. Plus, Bluetooth 5.4 with Auracast, AI Sound Boost for more balanced audio, and a new figure-8 LED ring light design. JBL has significantly overhauled the sound compared to the 310. Instead of just a bass boost, there is now a more balanced frequency response with clearer mids and highs, without sacrificing bass. AI Sound Boost optimizes the sound in real-time and reduces distortion at high volumes.

Included in the box

• JBL PartyBox 320 with built-in swappable battery Power cable Carrying bag or protective cover

Typical applications

• Longer outdoor events without a power outlet, thanks to the swappable battery House parties and pool parties with higher sound quality requirements Mobile DJ sets in bars and clubs Karaoke events and live streams Camping and festival pre-parties Events where Auracast is needed for multi-speaker setups

Technical specifications

• 240 watts of power with JBL AI Sound Boost Battery: 18 hours of playtime, swappable (JBL Battery 400) Charging time: 3 hours, faster than the 310 Bluetooth 5.4 with Auracast, multipoint connection possible IPX4 splash resistance Advanced light show with figure-8 LED ring, top and bottom LED strips, plus vertical LED accents Weight: 18.9 kg, wider wheels for better stability on uneven ground

Connections

• 2x microphone input (6.3 mm jack) 2x guitar input (Hi-Z 6.3 mm jack) 3.5 mm AUX-in USB-A for playback from a stick Bluetooth 5.4

The swappable JBL Battery 400 is a lithium-ion battery with 7.2 V, 9,444 mAh, and 68 Wh. A 10-minute quick charge provides 2 hours of playtime. With a spare battery, you can double your playtime to 36 hours, which is a decisive advantage for longer outdoor or multi-day events. Auracast allows streaming to multiple compatible JBL speakers simultaneously without traditional pairing. Available for rent at Renty with no deposit required.