JBL PartyBox 300


Rechargeable, High Power Audio System with Bluetooth Connectivity, Light shows and Mic/Guitar inputs

£399.99399.99 each
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In stock. Estimated delivery time 2-4 business days

Be Loud, Be Proud, Be Ready To Party!

The JBL PartyBox 300 is a powerful party speaker with JBL sound quality and vivid light effects. Thanks to its rechargeable battery and 12V DC input you can bring the party everywhere. Just plug in your Mic or Guitar and take the stage or stream your playlist via Bluetooth or from a USB stick. Connect two PartyBox speakers wirelessly with the TWS feature or wired from one RCA output to another RCA input. Let's get the party started!


General Specifications

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 Yes
Bass Boost Yes
Frequency Response 45Hz-20kHz
Battery type Lithium-ion 74.88Wh (equivalent to 7.2V 1040mAh)
Battery charge time 5 hours
Battery Playtime 18 hours*

Audio Specifications

Transducers 2x6.5" woofer, 3x2.25" tweeter


Product dimensions (wxdxh) 310mm x 320mm x 690mm Yes
Bare Product Weight 15.84kg
Packaging dimensions (wxdxh) 388mm x 396mm x 823mm Yes
Product weight with packaging 18.27kg


Battery capacity (mAh) 10,400
Charging time (hrs) 5


Powerbank Yes
Splashproof No
Lightshow Yes
Bluetooth Yes
3.5 mm audio cable Input Yes
Auto-power off Yes
Karaoke function Yes
Click here for a complete list of all specs for this product

Spec Sheet (EN)

2 MB
  • 1 x JBL Party Speaker
  • 1 x Quick-Start Guide
  • 1 x Warranty Card
  • 1 x Safety Sheet
  • 1 x AC Power Code (AC Plug varies by Region)
  • 1 x 12V DC Cable

Manuals & Downloads

The latest owner's manuals, quick start guides, and documents.

Search Result For ""

JBL PartyBox 300 is rated 4.6 out of 5 by 5.
Rated 5 out of 5 by from Very Impressed! I've had it for two weeks and I couldn't be more pleased. Crisp highs with thick bass that I can spread out over the neighborhood. Wonderful device.
Date published: 2019-02-18
Rated 5 out of 5 by from The party starter. I bought this 2 weeks ago after watching many reviews on youtube of multiple products. Very happy with my purchase overall, great sound quality, the bass literally vibrates my full flat block and takes parties to the next level. Definitely would recommend.
Date published: 2019-02-05
Rated 5 out of 5 by from Crazy bass Bought this thing for locker room and it shakes the walls! Insane bass great features overall best speaker out there.
Date published: 2019-02-03
Rated 5 out of 5 by from Not for the weak hearted I bought this a month ago and it still thrills me blasting it loud. If u don’t like loud music it’s not for you, the bass is absolutely massive and the sheer power of the speaker rocks my walls- prepare to get many complaints from your neighbours!
Date published: 2019-01-19
Rated 3 out of 5 by from JBL 300 PARTY BOX I bought 3 of these speakers over a month ago ,1 for The Christmas Draw and 2 for the Pub. Sound wise, very good but could do with being a touch loader. Microphone wise, there is a delay so unusable and pairing the 2 together there is a delay so had to wire them, so much for TWS, When reporting these problems I was told ,we don't know we are working on it. You can send them back if you wish .
Date published: 2018-12-20
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Hi, What are the options for the lights on the speaker , can you set it to one colour and not to pulse

Asked by: Ajchery
Hi, and thank you for your interest! You have three randomized patterns and one that follows the music. You cannot get other effects, and one colour only is not available.
Answered by: Bo Harman
Date published: 2018-12-15

Hi, Can I connect Pioneer DEH X 9650 BT car audio (have 3 RCA output) to PartyBox 300 with RCA connection cable.

Thanks for reaching out, we would like to work with you directly. Please submit a case request at https://www.jbl.com/support-contact.html and the Customer Service Team will be more than happy to assist you.
Answered by: Jayson D
Date published: 2019-02-14

Is this waterproof like the boombox? 

Asked by: Braimai123
Hi and thank you for your interest! No, this model is not waterproof, and has no IP rating. What you can do, if you want to use it where there is risk of rain, is to wrap a plastic garbage sack around it. Normal plastic will not influence the sound very much, and will protect well against the moisture.
Answered by: Bo Harman
Date published: 2019-01-30

How come it has a 10000 mah battery and the boombox has 20000 mah battery and is cheaper?????

Asked by: Ollie martin
Hi Ollie, The Boombox is cheaper than the JBL Partybox because of the features and components used in the Party Box 300. The storage capacity of a battery also has no influence on the price of a product.
Answered by: Kay Harman
Date published: 2018-12-11

How much watts (rms) does it have?

Asked by: Charles420
Hi, The rated output power of the JBL Party Box 200/300 is 120W RMS
Answered by: Kay Harman
Date published: 2018-12-11

What is watts on the 200 plus 300 

Asked by: Zedniya
Hi. You can find this spec in the owner's manual. We state: Total output power 120 W RMS. This is true for both the 200 and the 300, but of course the 300 can run on its internal battery as well.
Answered by: Bo Harman
Date published: 2018-12-07

Hi, does speaker have unique serial number? Thank you for Your answer.

Asked by: djdare
Thank you for your question. Yes, all Harman products have a unique serial number. You can find the serial number on the PartyBox in two places, the first place is on the box, before the serial number you will see the letters "SN" and the second place is on the back of the speaker on some small white paper. If you have anymore questions regarding the PartyBox, one of our Customer Support agents will be more than happy to help you, you can contact us on the following link: https://uk.jbl.com/support-contact.html
Answered by: Benjamin Smith
Date published: 2018-12-19

What version of Bluetooth does the PartyBox 300 have? Hopefully 5.0.

Asked by: PartyBob
The Partybox 300's Bluetooth version is 4.2
Answered by: Mario at Customer service
Date published: 2019-01-25
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