Speaker
Products
In The Lab
Forums
Newsletters
Join now
Best
Bluetooth Portable Outdoor Loud Home Brands Small Bluetooth For Sound JBL Budget And Cheap Bluetooth For Bass Parties Waterproof Bluetooth Shower Golf Smart Alexa Bluetooth Under $100 Bose Sonos
Tools
Compare Results Table Tool Review List Review Index Graph Review Pipeline Vote Custom Ratings
Popular
JBL Boombox 4 JBL Authentics 500 Bose Lifestyle Ultra Speaker JBL PartyBox On-The-Go Ultimate Ears WONDERBOOM 4 Bose SoundLink Max JBL Charge 6 JBL PartyBox Encore Essential 2 Ultimate Ears EPICBOOM JBL PartyBox 720 Bose SoundLink Flex (2nd Gen) JBL Flip 7 Harman/Kardon Onyx Studio 9 Anker Soundcore Select 4 Go JBL Xtreme 5 Sony SRS-XB100 Ultimate Ears MEGABOOM 4 JBL Boombox 3 JBL PartyBox Stage 320 Sony ULT FIELD 5
201 Speakers bought and tested
Supported by you via membership, and when you purchase through links on our site, we may earn an affiliate commission.
  1. Home
  2. Speaker
  3. Compare

Marshall Acton III vs Bromley 450

Which Speaker Is Better?

    Top
    Main Differences
    Design
      PicturesStylePortabilityBuild QualityControlsIn The Box
    Sound
      Frequency Response AccuracyRaw Frequency ResponseDirectivityLoudness
    Active Features
      BatteryVoice AssistantApp
    Connectivity
      WiredBluetoothWi-Fi
    Comments

Products

Marshall Acton III
Marshall Bromley 450

Tested using Methodology v1.0.1

Updated Sep 17, 2026 02:39 PM

SEE PRICE
Amazon

Tested using Methodology v1.0.1

Updated Sep 17, 2026 03:12 PM

SEE PRICE
Amazon
Marshall Acton III Picture

Track

Marshall Bromley 450 Picture

Track

Bluetooth
Yes
Wi-Fi
No
Speakerphone
No
Voice Assistant
No
Battery Powered
No
Bluetooth
Yes
Wi-Fi
No
Speakerphone
No
Voice Assistant
No
Battery Powered
Yes
  1. Recommended in 1 article:
  2. Bluetooth For Sound

Our Verdict

Marshall Acton III

Marshall Bromley 450

The Marshall Bromley 450 and Marshall Acton III are significantly different styles of products. The Bromley 450 is a party speaker with a 360-degree design so it sounds consistent regardless of where your house party attendees are standing. On the other hand, the Acton is much smaller and has a wired-only design with a narrow optimal listening space directly in front of it.

GIFT THIS COMPARISON

0 

Variants

  • Acton III (Black)
  • Acton III (Cream)
  • Bromley 450 (Black and Brass)

Review

See Marshall Acton III Review
See Marshall Bromley 450 Review
0 
2 

Check Price

Black
Acton III
SEE PRICE
Amazon
Black and Brass
Bromley 450
SEE PRICE
Amazon
Cream
Acton III
SEE PRICE
Amazon
Black and Brass
Bromley 450
SEE PRICE
BestBuy.com
Midnight Blue
Acton III
SEE PRICE
Amazon
Black and Brass
Bromley 450
SEE PRICE
Marshall
 
Black and Brass
Bromley 450
SEE PRICE
B&H
 
Black and Brass
Bromley 450
SEARCH
Walmart.com

Main Differences for
Music

Threshold 

0.10

Music 
 

0.0
0.0
JOIN NOW  to see main differences

Full Comparison

Design

Style  

Style Photo  

Marshall Acton III Style Photo Sample

SAMPLE

Join Now

for pictures & test results

Marshall Bromley 450 Style Photo Sample

SAMPLE

Join Now

for pictures & test results

RGB Lights  

Locked
Locked

Portability 
 

N/A
N/A

Dimensions Photo  

Marshall Acton III Dimensions Photo Sample

SAMPLE

Join Now

for pictures & test results

Marshall Bromley 450 Dimensions Photo Sample

SAMPLE

Join Now

for pictures & test results

Volume 
 

Lock in³ (Lock cm³)
Lock in³ (Lock cm³)

Weight 
 

Lock lbs (Lock kg)
Lock lbs (Lock kg)

Power Source 
 

Locked
Locked

One-Hand Carry 
 

Locked
Locked

Build Quality 
 

N/A
N/A

Build Quality Photo  

Marshall Acton III Build Quality Photo Sample

SAMPLE

Join Now

for pictures & test results

Marshall Bromley 450 Build Quality Photo Sample

SAMPLE

Join Now

for pictures & test results

Material Quality 
 

Locked
Locked

Water Resistance 
 

Locked
Locked

Dust Resistance 
 

Locked
Locked

Impact Resistance 
 

Locked
Locked

Floats In Water 
 

Locked
Locked

Controls 
 

N/A
N/A

Controls Photo  

Marshall Acton III Controls Photo Sample

SAMPLE

Join Now

for pictures & test results

Marshall Bromley 450 Controls Photo Sample

SAMPLE

Join Now

for pictures & test results

Controls Photo 2  

Marshall Acton III Controls Photo 2 Sample

SAMPLE

Join Now

for pictures & test results

Marshall Bromley 450 Controls Photo 2 Sample

SAMPLE

Join Now

for pictures & test results

Ease Of Use 
 

Locked
Locked

Feedback 
 

Locked
Locked

Music Play/Pause 
 

Locked
Locked

Call Answer/End 
 

Locked
Locked

Volume Up/Down 
 

Locked
Locked

Track Next/Previous 
 

Locked
Locked

Microphone On/Off 
 

Locked
Locked

Additional Controls 
 

Locked
Locked

In The Box 
 

In The Box Photo  

Marshall Acton III In The Box Photo Sample

SAMPLE

Join Now

for pictures & test results

Marshall Bromley 450 In The Box Photo Sample

SAMPLE

Join Now

for pictures & test results

Sound

Frequency Response Accuracy 
 

N/A
N/A

Frequency Response Graph  

Marshall Acton III Frequency Response Graph Sample

SAMPLE

Join Now

for pictures & test results

Marshall Bromley 450 Frequency Response Graph Sample

SAMPLE

Join Now

for pictures & test results

Slope 
 

Lock
Lock

Std. Err. 
 

Lock dB
Lock dB

Low-Frequency Extension 
 

Lock Hz
Lock Hz

High-Frequency Extension 
 

Lock kHz
Lock kHz

Raw Frequency Response 
 

Raw Frequency Response Graph  

Marshall Acton III Raw Frequency Response Graph Sample

SAMPLE

Join Now

for pictures & test results

Marshall Bromley 450 Raw Frequency Response Graph Sample

SAMPLE

Join Now

for pictures & test results

Directivity 
 

N/A
N/A

Directivity  

Marshall Acton III Directivity Sample

SAMPLE

Join Now

for pictures & test results

Marshall Bromley 450 Directivity Sample

SAMPLE

Join Now

for pictures & test results

Directivity Graph  

Marshall Acton III Directivity Graph Sample

SAMPLE

Join Now

for pictures & test results

Marshall Bromley 450 Directivity Graph Sample

SAMPLE

Join Now

for pictures & test results

Directivity Index 
 

Lock dB
Lock dB

Stereo 
 

Locked
Locked

Loudness 
 

N/A
N/A

Dynamic Range Compression  

Marshall Acton III Dynamic Range Compression Sample

SAMPLE

Join Now

for pictures & test results

Marshall Bromley 450 Dynamic Range Compression Sample

SAMPLE

Join Now

for pictures & test results

SPL @ Max Volume 
 

Lock dB SPL
Lock dB SPL

DRC @ Max Volume 
 

Lock dB
Lock dB
Active Features

Battery 
 

N/A
N/A

Battery Life 
 

N/A
Lock hrs

Charge Time 
 

N/A
Lock hrs

Power Saving 
 

Locked
Locked

Charging Port 
 

Locked
Locked

Battery Powered 
 

Locked
Locked

Voice Assistant 
 

N/A
N/A

Alexa 
 

Locked
Locked

Google Assistant 
 

Locked
Locked

Speakerphone 
 

Locked
Locked

Siri 
 

Locked
Locked

Voice Assistant 
 

Locked
Locked

Voice Activation 
 

Locked
Locked

Microphone Mute 
 

Locked
Locked

Far-Field Performance 
 

Locked
Locked

Ambient Noise Performance 
 

Locked
Locked

App 
 

N/A
N/A

App Picture  

Marshall Acton III App Picture Sample

SAMPLE

Join Now

for pictures & test results

Marshall Bromley 450 App Picture Sample

SAMPLE

Join Now

for pictures & test results

App Name 
 

Locked
Locked

iOS 
 

Locked
Locked

Android 
 

Locked
Locked

EQ 
 

Locked
Locked

Stereo Pair Mode 
 

Locked
Locked

Party Mode 
 

Locked
Locked

Multi-Room 
 

Locked
Locked
Connectivity

Wired 
 

Aux Input 
 

Locked
Locked

USB Audio 
 

Locked
Locked

Other Ports 
 

Locked
Locked

Bluetooth 
 

N/A
N/A

Bluetooth 
 

Locked
Locked

Bluetooth Version 
 

Locked
Locked

Bluetooth iOS Latency 
 

Lock ms
Lock ms

Bluetooth Android Latency 
 

Lock ms
Lock ms

Bluetooth Range 
 

Lock ft (Lock m)
Lock ft (Lock m)

Multi-Device Pairing 
 

Locked
Locked

Wi-Fi 
 

N/A
N/A

Wi-Fi Version 
 

Locked
Locked

Wi-Fi Frequency Band 
 

Locked
Locked

Wi-Fi 
 

Locked
Locked

Apple AirPlay 
 

Locked
Locked

AirPlay Latency 
 

N/A
N/A

Google Chromecast 
 

Locked
Locked

Chromecast Latency 
 

N/A
N/A

Check Price

Black
Acton III
SEE PRICE
Amazon
Black and Brass
Bromley 450
SEE PRICE
Amazon
Cream
Acton III
SEE PRICE
Amazon
Black and Brass
Bromley 450
SEE PRICE
BestBuy.com
Midnight Blue
Acton III
SEE PRICE
Amazon
Black and Brass
Bromley 450
SEE PRICE
Marshall
 
Black and Brass
Bromley 450
SEE PRICE
B&H
 
Black and Brass
Bromley 450
SEARCH
Walmart.com
Back to Top

Marshall Acton III

Marshall Bromley 450

Comments

  1. Comparison
 • Posted 1 day ago

Marshall Acton III vs Marshall Bromley 450: Main Discussion

What do you think of these products? Let us know below.


Looking for a personalized buying advice from the RTINGS.com experts? Members have direct access to buying advice on our member forum.

See All Audio Discussions
 Share
0 
PreviewBack to editorFormat guide
No comments yet, refresh to see new ones
We make money directly from you via Membership (which gives you access to extra features), when you buy RTINGS.com Merch, and when you buy a product after clicking a link to a retailer. Learn more about how we work.
We buy our own products, just like you, mostly from the United States. When a product is discontinued or no longer popular, we sell the review units locally. See what products we currently have for sale.
© 2026 9298-5266 Quebec Inc. All Rights Reserved.