JBL Partybox 300 Bluetooth Megasound Party Speaker - Black

Product code: 257429

Product features

  • Output power: 120 W RMS
  • Bluetooth
  • Up to 18 hours battery life
  • USB / Aux-in / RCA

Product features

  • Output power: 120 W RMS
  • Bluetooth
  • Up to 18 hours battery life
  • USB / Aux-in / RCA
Product information
Top features: 

- Get the party started with JBL Signature Sound 

- Play music wirelessly from your smartphone

- Create that party vibe with lighting effects

Get the party started

Kickstart your night with the JBL Partybox 300 Bluetooth Megasound Party Speaker. From EDM to hip hop, you get loud, powerful sound and punchy bass without missing any of the details – all thanks to JBL Signature Sound.

And since it's portable, with a rechargeable battery that lasts up to 18 hours, you can take the party outside, to the park, or to your mate's place.

Play music wirelessly

Everyone can have a go at being the DJ thanks to the Bluetooth connection. Sync up a smartphone, tablet, or laptop to the Partybox 300 and play tunes straight from your favourite streaming services. Or just preload a playlist onto a USB stick and hook that up to the Partybox 300.

If you find your phone running out of juice towards the end of the night, you can use the USB port to recharge.

You can also plug in a mic or a guitar for a lively jam session or impromptu band practice.

Create that party vibe

With three different light modes – Metre, Pulse, and Party – you can really set the vibe with the Partybox 300. For extra sound power, you can connect another JBL Partybox speaker wired or wirelessly.

Technical specifications for JBL Partybox 300 Bluetooth Megasound Party Speaker - Black

Type Megasound speaker
Colour Black
Channels 2.0
Output power 120 W (60 W + 60 W)
Speaker unit - 25 mm tweeter x 3
- 165 mm subwoofer x 2
Amplifier Yes
Frequency 45 - 20,000 Hz
Impedance 4 Ohms
Supported file formats AAC, MP3
Lighting effects - Meter mode
- Pulse mode
- Party mode
Inputs - 3.5 mm jack x 1
- RCA x 1
- Mic jack x 1
- Guitar jack x 1
- USB x 1
Outputs RCA x 1
WiFi No
Bluetooth Bluetooth 4.2
Speaker pairing Up to 2 speakers
USB for playback USB x 1
USB smartphone charging Yes
Power options - Mains
- Rechargeable battery
Battery life Up to 18 hours
Power consumption On-mode: 60 W
Auto standby / power off mode Yes
Box contents - JBL Partybox 300 Bluetooth Megasound Party Speaker
- Mains lead
- 12 V cable
- User guide
Dimensions 690 x 310 x 320 mm (H x W x D)
Weight 15.84 kg
Manufacturer's guarantee 2 years
Customer reviews

JBL Partybox 300 Bluetooth Megasound Party Speaker - Black reviews verified by reevooReevoo

17 reviews

Reviews from:Sort by:
(9.0 out of 10)
Ease of use
Sound quality
Value for money
Overall rating
Scores 9.0 out of 10 based on 17 reviews
Show more score details
(10 out of 10)


Lighting and sound
Reviewer left no comment
Confirmed purchase: 21 September 2019
Published on: 21 October 2019
(9 out of 10)


West midlands GB Pop, rock or dance music
Good sound and works well
Would be better if it had remote control , and would be better if you could pair two speakers together from one, instead of having to put the two together
2 of 4 people found this review helpful
Confirmed purchase: 02 July 2019
Published on: 03 August 2019
(8 out of 10)


Blackburn GB Pop, rock or dance music
Great sound and good battery life
A bit heavy
2 of 4 people found this review helpful
Confirmed purchase: 25 June 2019
Published on: 29 July 2019
(10 out of 10)


Ballynahinch GB Audio professional
Unreal speaker with a lot of clarity and bass. Holds the battery for ages, didn’t charge my speaker for about a month now and i can still turn it on and play music at a reasonable level for as long as I want and it’s still sitting on 5 out of 5 bars of charge
Could be louder but that’s my opinion. Quite heavy to carry around
2 of 4 people found this review helpful
Confirmed purchase: 17 May 2019
Published on: 18 June 2019
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JBL Partybox 300 Bluetooth Megasound Party Speaker - Black