Bromley 450 slightly from the side
Bromley 450 is being held up by a crowd
Close-up of the Bromley 450 control panel
Bromley 450 side view and panel
The Bromley 450 is being adjusted by a person
The back of the Bromley 450.
Bromley 450 with karaoke microphones on it
People gathered around the Bromley 450
Text reads: THIS PARTY SPEAKER KEEPS LIVE MUSIC ALIVE. 1% of member purchases on Marshall.com supports grassroots venues.
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BROMLEY 450

Party speaker with 40+ hours of portable playtime.
Details

Whether the party is indoors or out, never sacrifice the sound quality. True Stereophonic 360° sound lets everyone know the party is on. And you can keep it going with a portable playtime that lasts as long as the crowd wants. It can take a bit of dirt and water, so no need to stay inside. Living room, festival or backyard – this Bluetooth party speaker goes the distance. We have speakers for every occasion. Explore our party speaker line-up. Designed and engineered in Sweden. Made in China.

Features
Tech Specs - Icon - True Stereophonic

True Stereophonic 360° sound: Feel the beat no matter where you're standing

Tech Specs - Icon - 40+ hours

40+ hours of portable playtime: More than enough for your 800-track setlist

Tech Specs - Icon - Integrated stage lights

Integrated stage lights: 3 presets to light up the dance floor

Tech Specs - Icon - Mic & instrument inputs

Mic & instrument inputs: Sing or play along to your favourite music

Tech Specs - Icon - Dust & water-resistant (IP54)

Dirt & splash resistant: Ready for parties indoors and out

Tech Specs - Icon - Built-in handle & wheels

Built-in handle: Easily pick up your speaker and go

AUDIO SPECIFICATION
Driver Type
Dynamic
Frequency range
40Hz – 20,000Hz 
Drivers
2 x 6.5 inch 40W Woofers   4 x 2 inch 6W Full-ranges   2 passive radiators
Stereo/mono
Stereo
Maximum sound pressure level
100 dB @ 1 m
Cabinet principle
Sealed with passive radiator
POWER AMPLIFIERS
2 x 90 W class D amplifiers for the woofers 4 x 55 W class D amplifiers for the full-range drivers
Equaliser
Yes
PHYSICAL UNIT
Weight
12.32 KG / 16.5 KG including packaging 27.16 LBS / 36.4 LBS including packaging
Width
366mm / 14,41"
Height
492mm / 19,37"
Depth
261mm / 10,28"
Water Resistance
IP55
Colorways
Black and Brass
Light Show
Yes
Portability Features
Handle and four strap anchors
Country of origin
Designed and engineered in Sweden. Made in China.
Battery
Play time
40+ hours
Battery type
Rechargeable, replaceable, LFP battery (LiFePO4)
Quick Charging
20 minutes gives 6 hours of playtime
Charging time
3.5 hours to full recharge
Power input
120W
Exchangeable Battery
Yes
POWER
MAINS INPUT VOLTAGE
100-240V
MAINS FREQUENCY
50/60 Hz
CONTROLS AND CONNECTIVITY
Wireless connectivity
Bluetooth 5.3 Auracast
Wired connectivity
Audio: AUX 3.5mm (Input and Output), USB-C, RCA. Mic / Instrument: 2 XLR/6.35 mm combo jack
Bluetooth range
>70m (229 feet) in free field
Top panel controls
Power switch Source selector Media control Volume Bass Treble M-button Input 1 volume control Input 2 volume control Input 1 and input 2 effect control Light mode Battery indicator
Codecs
SBC, AAC-mpeg 2 and LC3
USB Spec
Type C, Charge out 5V, 3.0A
Bluetooth Multipoint Connectivity
Yes
Mic/Instrument Input
2 XLR/6.3 mm combo jacks
INCLUDED IN THE BOX
Box Contents
Speaker    Bromley battery (Placed in the speaker)    Mains lead   Quick start guide   Legal & Safety sheet  
COMPATIBLE APPS
Apps
Marshall Bluetooth app
Support & more information

Colour

Black and Brass

The Bromley 450 in Black and Brass front facing

$ 799.99

Free Delivery

2 Business Days

Returns, warranty & payment

A person fine-tuning the volume on a Bromley 450.

Party anywhere

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Party anywhere

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Party anywhere

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Party anywhere

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Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.

Party anywhere

A GIF of a X inside a circle.
People are gathered around the Bromley 450 on the stairs

TRUE STEREOPHONIC 360° SOUND

Whether you're at a house party or festival campsite – the music always feels close with a sound that gets around. Slip right into dancefloor mode, no matter where you are.

TRUE STEREOPHONIC 360° SOUND

Whether you're at a house party or festival campsite – the music always feels close with a sound that gets around. Slip right into dancefloor mode, no matter where you are.

40+ hours of playtime

They say nothing good happens after 2am, but with Bromley 450's long playtime that's for you to find out. Just hit play and let your 800-track playlist take over.

Bromley 450 being lifted into the air by people

MIC & INSTRUMENT INPUTS

Give the crowd a show they'll never forget. Inputs for both mic and instruments let you turn the party into an impromptu gig or karaoke session without any hassle.

Mic not included.

Bromley 450 equipped with microphones

MIC & INSTRUMENT INPUTS

Give the crowd a show they'll never forget. Inputs for both mic and instruments let you turn the party into an impromptu gig or karaoke session without any hassle.

Mic not included.

A person is inserting a plug into the Bromley 450

INTEGRATED STAGE LIGHTS

We've been the life of the party since 1962, so we know what makes for a good light show. Choose from three presets that each add to the energy of the party in their own unique way.

INTEGRATED STAGE LIGHTS

We've been the life of the party since 1962, so we know what makes for a good light show. Choose from three presets that each add to the energy of the party in their own unique way.

Multiple people are hanging out around the Bromley 450
The Bromley 450 is in the center, sparkling

DIRT & SPLASH RESISTANT

Park, festival or backyard – with its IP55 rating, dirt and water splashes are no problem for this portable speaker. It’ll keep the party going anytime, anywhere.

Water splashed around the Bromley 450

BUILT-IN HANDLE

No matter how secret the location, Bromley 450 is designed to easily bring with you to the party. Featuring a built-in handle, this speaker follows you wherever you go.

A person is carrying a Bromley 450 using the handle

PRODUCT LONGEVITY

When designing, we prioritise durability, repairability, and replaceable components to extend product lifespan and reduce waste. Bromley 450 comes with an easily replaceable LFP battery¹, featuring adaptive charging technology that helps protect battery health over time. You can purchase replacement batteries at marshall.com.

¹ Bromley 450 uses a Lithium Iron Phosphate (LFP) battery, free from cobalt and with minimal nickel content (~0.25%). This reduces reliance on some critical raw materials linked to social and environmental challenges. Battery still contains lithium and other critical minerals. Compared to conventional Lithium-Ion (Li-ion) batteries, LFP offers a longer cycle life and enhanced safety, with a significantly lower risk of thermal runaway. The trade-off is that LFP technology is generally heavier and has lower energy density, which is why Li-ion remains common in devices where weight and compactness are key. For applications where durability and sustainability matter most, LFP is a strong choice. Please recycle old batteries and electronic products responsibly.

COMMON QUESTIONS

Product details

Battery type

Rechargeable, replaceable, LFP battery (LiFePO4)

Wireless connectivity

Bluetooth 5.3 Auracast

Dimensions

366 x 261 x 492 mm 14,41 x 27,16 x 19,37 in

Weight

12.32 KG / 16.5 KG including packaging 27.16 LBS / 36.4 LBS including packaging