Marshall grows its party speaker line up with the launch of Bromley 450. Sporting the same, unmistakable Marshall design as the larger Bromley 750, this compact portable speaker lets everyone know the party is on thanks to True Stereophonic 360° sound, 40+ hours of playtime and integrated stage lights that make it the center of attention in any setting.
Every element of the Bromley 450 is designed with purpose. Tactile controls invite interaction, while the durable construction ensures it stands up to heavy use, loud rooms, and long nights. A water-based PU leather wrap encases a premium box design, with soft TPU plastic corner caps for added durability and a stamped metal grill that sits above integrated lights inspired by ‘70s stage shows. Bromley 450 is guaranteed to stand out - living room, festival or backyard, this Bluetooth party speaker goes the distance and looks the part.
Whether the party is indoors or outside, there’s no need to worry about sacrificing sound quality as this portable speaker has True Stereophonic 360° sound that travels far and can be felt in every direction. Bromley 450 can also play free from wires and is dirt and splash resistant thanks to its IP55 rating. Plus, it's convenient size, including a built-in handle for easy transportation, makes it the perfect sidekick wherever the party goes.
Bromley 450 also shares the same exchangeable battery as Bromley 750 to keep the party going for longer and includes two combo jacks for mic and instrument inputs if the party calls for an impromptu DJ set or karaoke night.
“Last year, we launched our first ever party speaker and we’re excited about growing that family of Marshall speakers already this spring” said Hanna Wallner, Product Manager, Marshall Group. “Bromley 450 is the natural continuation and smaller sibling to Bromley 750. This speaker is smaller and more affordable yet still packed with impressive features including sound that hits every corner, a stage light inspired light show and our unique Marshall design.” Hanna continued.
“With Bromley 450, our goal was to take everything we loved about the Bromley 750 and bring it into a more compact form. It delivers the same signature sound: fast, powerful bass, clean mids, and detailed highs. Thanks to our unique 360° True Stereophonic design it can always be the center of the party, preserving the depth and atmosphere of your favorite music” added Malcolm Kennedy, Director of Audio & Acoustics, Marshall Group.
The Bromley 450 is available from 2nd July onwards on marshall.com, all online platforms & leading retail stores, priced at 79,999. Please see below for full specs and further information.
Through Amplify, Marshall’s new loyalty programme, Marshall commits 1% of members' purchases to support grassroots music, starting with independent music venues. To sign up or find out more, visit marshall.com/amplify.
BROMLEY 450 KEY FEATURES
True Stereophonic 360° Sound: Whether dancing at a house party or festival campsite— the music always feels close with a sound that gets around. Every beat finds its way no matter the location. Drivers on all sides mean slipping right into dancefloor mode is easy. Just press play to get the party started.
40+ Hrs of Portable Playtime: They say nothing good happens after 2am but with Bromley 450’s long playtime there’s plenty of time to find out. Made to keep the party going no matter the place, this speaker can play 800 songs back-to-back. Buy an extra battery to keep on standby for when power is running low or use the AC cable to plug in the speaker. This can also be used to recharge the battery.
Integrated Stage Lights: At Marshall, we know what makes for a good light show. Take it back to the best gig memories with three presets that each add to the energy of the party in their own unique way. The first preset creates the perfect ambient lighting to get going to, while the second and third turn things up even more by dynamically moving to the music. Now light up the dancefloor, literally and figuratively.
Mic & Instrument Inputs: The most memorable shows are the unexpected ones. With inputs for both mic and instruments, turn the party into an impromptu gig or karaoke session without any hassle and add that live musical layer to give friends a night to remember.
Dirt & Splash Resistant: With Bromley 450’s IP55 rating it’s easy to pick the next party location. Park, festival or backyard — dirt and water splashes are no problem for this portable speaker. It’ll keep the party going anytime, anywhere. Taking a bit of a break in between parties? Don’t worry. A bit of dust during downtime won't hurt it either.
Built-in Handle: Take the party as far as it can go. With its built-in handle, Bromley 450 is easy to bring along no matter how secret the location. Whether going all out at the beach or set the mood in the festival camp, just pop it in the trunk of the car or carry it on the train.
BROMLEY 450 TECHNICAL INFO
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Physical Unit |
Dimensions |
360 x 261 x 492 mm |
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Weight [kg] |
12.2kg |
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Materials |
15% recycled material by weight¹ |
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Repair Service |
Yes |
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Water resistance |
Yes, IP55 |
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Colorways |
Black and Brass |
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Light show |
Yes |
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Handle |
Yes |
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Wheels |
No |
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Mic/Instrument input |
2 XLR/6.3 mm combo jacks |
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Controls |
PoweSwitch SourcSelector MediaControl Volume Bass/Treble M-button Input 1 Volume Control Input 2 Volume Control Input 1 and Input 2 Effect Control Light Mode Battery Indicator |
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Audio Spec’s |
Power Amplifiers |
2 x 90 W Class D Amplifiers for the Woofers 4 x 55W Class D Amplifiers for The full-range Drivers |
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Drivers |
2 x 6.5 inch 40 W Woofers 4 x 2 inch 6 W Full-Ranges 2 x 8 inch Passive Radiators |
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Driver Type |
Dynamic |
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Frequency range |
42Hz – 20kHz |
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Cabinet Principle |
Closed system |
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Maximum sound press level |
100 dB @ 1 m |
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Equalizer |
Yes |
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Stereo/Mono |
Stereo |
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Audio codecs |
SBC, AAC-mpeg 2 and LC3 |
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Inputs & Outputs |
Wireless connectivity |
Bluetooth 5.3, Auracast |
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Bluetooth Multipoint Connectivity |
Yes |
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Bluetooth range |
>70m (229 feet) in free field |
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Wired connectivity |
Audio: AUX 3.5mm (Input and Output) USB-C RCA Mic / Instrument: 2 XLR/ 6.35mm combo jack |
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Power Input |
100-240V50/60Hz |
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USB-C charging port |
5V⎓3.0A |
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Battery |
Playtime |
40+ hours |
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Quick charge |
20 minutes gives 6 hours of playtime |
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Charging time |
3.5 hours to full recharge |
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Exchangeable battery |
Yes |
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Battery information |
Rechargeable, replaceable, LFP battery (LiFePO4) |
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MAKING OUR PRODUCT LAST LONGER
Bromley 450 contains 15% recycled material by weight¹, reducing the need for virgin resources. This helps minimise environmental and social impacts associated with raw material extraction and processing. Using recycled content also helps lower carbon emissions compared to producing virgin materials².
When designing, we prioritise durability, repairability, and replaceable
components to extend product lifespan and reduce waste. Bromley 450 comes with an easily replaceable
LFP battery3, featuring
adaptive charging technology that helps protect battery health over time. You can purchase replacement batteries
at marshall.com.
1 Includes post-consumer recycled ABS, post-consumer recycled PC-ABS, pre-consumer recycled aluminum alloy, pre-consumer recycled praseodymium–neodymium (rare-earth elements) and post-consumer-recycled polyester. Calculations are based on total product weight, excluding accessories and packaging.
² Industry data indicates recycled materials generally have lower carbon footprint than virgin materials; actual reductions vary by material and process.
3 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.
New Delhi, India, June 30, 2026
