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JBL Partybox 300 Specs - JBL Bluetooth Speaker Specifications




JBL Partybox 300 Features


JBL Signature Sound

Enjoy an immersive audio experience at home or at a party that only JBL sound can provide.

Light shows

There’s a light mode for every mood: Meter, Pulse and Party mode.

Portable with rechargeable battery

Plug in to the 12V DC output of your car or use the built-in 10,000mAh battery for 18 hours of playtime.

Mic and guitar inputs

Plug in your mic or guitar and take the stage.

Wireless Bluetooth Streaming

Wirelessly stream high-quality sound from your smartphone or tablet.

USB playback

Pre-program your party or event with your favorite playlist from a USB thumb drive!

TWS and RCA

Connect compatible speakers wirelessly via TWS (True Wireless Stereo using Bluetooth connection up to 2 party speakers) or wired via one RCA output to another.

USB recharging for external devices

A USB port on the JBL PartyBox lets you charge other USB devices right from the speaker. So you don’t need an extra charger to keep your devices powered up.

*18 hrs battery playtime is only for reference and may vary depending on music content and battery aging after numerous charging and discharging cycles. Test conditions applied.


JBL Partybox 300 Specs



  • Power Inputs: 100–240V AC and 12V DC
  • Input Terminals: RCA L/R, USB port, 3.5mm Aux-in, Mic/Guitar with volume control
  • Wireless Connectivity: Bluetooth Technology
  • Output Terminals: RCA L/R
  • TWS (True Wireless Stereo) connecting up to 2 party speakers using Bluetooth technology 
  • Bass Boost: Yes
  • Frequency Response: 45Hz–20kHz
  • Product dimensions (W x D x H):  310 x 320 x 690mm
  • Bare Product Weight: 15.84kg
  • Packaging dimensions (W x D x H):  374 x 375 x 795mm 
  • Product weight with packaging: 17.96kg
  • T ransducers: 2 x 6.5" woofer, 3 x 2.5" tweeter
  • Battery type: Lithium-ion 74.88Wh (equivalent to 7.2V 1040mAh)