Marshall Bromley 450 Party Speaker

BH #MABRML450 • MFR #1009212
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Marshall Bromley 450 Party Speaker
Key Features
  • Up to 400W of Total Audio Power
  • True Stereophonic 360° Sound
  • Marshall Amp Design & Analog Controls
  • Integrated Stage-Inspired Light Show
Give your next party the vibe of a rock show with the Bromley 450 Party Speaker from Marshall. With a design similar to a Marshall stage amp, down to the logo badge on the black front grille and analog knob controls, the Bromley 450 exudes the same iconic aesthetic. Made for a party, an array of stage lights behind the grille can put on a light show as music fills the room or yard with 400W of power and true stereophonic 360° sound. On a full charge, the Bromley 450 can play for over 40 hours, so it can easily last all night until the sun comes up. You have plenty of options on what to play as it supports Bluetooth streaming, ports for instruments and microphones, stereo components, or a flash drive.
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Marshall Bromley 450 Overview

Give your next party the vibe of a rock show with the Bromley 450 Party Speaker from Marshall. With a design similar to a Marshall stage amp, down to the logo badge on the black front grille and analog knob controls, the Bromley 450 exudes the same iconic aesthetic. Made for a party, an array of stage lights behind the grille can put on a light show as music fills the room or yard with 400W of power and true stereophonic 360° sound. On a full charge, the Bromley 450 can play for over 40 hours, so it can easily last all night until the sun comes up. You have plenty of options on what to play as it supports Bluetooth streaming, ports for instruments and microphones, stereo components, or a flash drive.
Many Ways to Play
  • Bluetooth: Stream playlists and apps from a phone or tablet
  • Auracast: Broadcast audio to the Bromley 450 and other Auracast speakers in the area
  • RCA: Connect a turntable or other component via an optional RCA cable
  • Dual Combo XLR: Each XLR input supports either a microphone or instrument, such as a guitar, letting your guests show off their talent
  • AUX: Connect a wired device via an optional 3.5mm AUX cable
  • USB-C: Plug in a flash drive and play your digital library
Tactile Controls
The tactile control knobs are arranged in two distinct groups. One offers overall control over the speaker's volume, bass, and treble while the other lets you control the dual combo AUX inputs. There's a volume knob for each input and an effects knob that lets you add delay, reverb, or both.
Additional Details
  • Bluetooth multipoint support for pairing two devices at once
  • Splash and dirt resistant
  • Select from three light show modes or leave them off
  • 2 x 6.5" woofers
  • 4 x 2" full-range drivers
  • 20-minute quick charge gives up to 6 hours of playtime
  • Front panel LED battery status indicator
  • Replaceable battery
  • Integrated side carry handle

Marshall Bromley 450 Specs

Key Specs
Power Output
400 W
Drivers
2x 6.5" / 17 cm Woofer
4x 2" / 5 cm Full-Range
Frequency Response
40 Hz to 20,000 Hz
Built-In Mic
No
Bluetooth
Bluetooth 5.3
Media/Memory Card Slot
No
Speaker System
Power Output
400 W
Amplifiers
6x Class-D
Drivers
2x 6.5" / 17 cm Woofer
4x 2" / 5 cm Full-Range
Passive Radiators
2
Frequency Response
40 Hz to 20,000 Hz
Maximum SPL
100 dB
Microphone
Built-In Mic
No
Active Noise Cancellation
No
Bluetooth Connectivity
Bluetooth
Bluetooth 5.3
NFC
No
Supported Audio Codecs
AAC, LC3, SBC
Wireless Range
229.7' / 70 m
Additional Wireless Connectivity
Radio Tuner
No
Wired Connectivity
Inputs/Outputs
1x Stereo RCA Input
2x XLR (Audio) Input
1x 1/8" / 3.5 mm Stereo (Audio) Input
1x 1/8" / 3.5 mm Stereo (Audio) Output
1x USB-C (Audio/Power) Input/Output
Power
USB Power
5 VDC at 3 A, 15 W Output
Battery Chemistry
Lithium Iron Phosphate
Estimated Battery Life
40 Hours
Battery Charging Time
3.5 Hours
Input Power
100 to 240 VDC
Physical
Color
Black
Media/Memory Card Slot
No
Environmental Resistance
Dust/Water-Resistant (IP55)
Dimensions (W x H x D)
14.4 x 19.4 x 10.3" / 366 x 492 x 261 mm
Weight
27.16 lb / 12.32 kg
Packaging Info
Package Weight
39.885 lb
Box Dimensions (LxWxH)
24.4 x 19 x 16"

Marshall Bromley 450 Reviews

It's a great product

By BRANDON P.
Rated 5 out of 5
Date: 2026-05-04

I love the speaker . . . . I own Boss and JBL speakers. . . now Marshall. . . . . I love them all but I have a Marshall portable speaker . . . . I can carry it with me wherever I go. . . . . . . thanks

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