Marshall Bromley 450 Review: Ranked #23 of 42

Last updated: September 27, 2026

The Marshall Bromley 450 ranks #23 out of 42 total Party Size Portable Bluetooth Speakers for sound quality. See all Portable Bluetooth rankings for every top pick.

Brand: Marshall

Prices on this page were last checked September 26, 2026 at 11:14 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.

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#23 Marshall Bromley 450: $649.95 Amazon B&H Photo Video eBay

Pros: A balanced, warm sound with a flat midrange that keeps vocals and instruments clear, plenty of bass rumble and enough treble for energetic vocals, per RTINGS’ lab tests. Drivers on all four sides keep the tonal balance nearly the same from any angle, and M1M Tech Channel found it more open and airy than the Soundboks Mix and Teufel Rockster Air 2, with deeper bass than both. RTINGS measured 18.8 hours of battery from a swappable LiFePO4 pack shared with the Bromley 750, and it adds IP55 protection, two XLR/6.35mm combo inputs, USB-C audio, Auracast and physical bass and treble knobs.

Cons: It is the quietest of its rivals: both the Soundboks Mix and Teufel Rockster Air 2 play louder, and near max volume the bass recedes and the sound gets less composed. The warm tuning lacks some fine treble detail. There is no graphic EQ, only bass and treble knobs, and its stereo spreads left and right channels around the cabinet, so panned elements can land on the wrong side. At 12.3 kg it has a carry handle but no wheels.

Related speakers: Marshall Bromley 750.

How it compares: Just above it: Klipsch Gig XXL - $570 cheaper, 32 fewer hours of battery life. Just below it: Samsung MX-ST50B - $350 cheaper, 22 fewer hours of battery life.

Amplifier Power400W
AppYes (Marshall Bluetooth app)
Aux InputYes (3.5mm, RCA)
Battery Life40+ hours (Manufacturer specified)
Bluetooth CodecsSBC, AAC, LC3
Bluetooth Version5.3
Built-in MicrophoneNo
Charging Time3.5 hours
Digital Aux InputYes (USB-C)
Dimensions14.4” x 19.4” x 10.3” (366 x 492 x 261 mm)
Drivers2x 6.5” woofers, 4x 2” full-range drivers, 2 passive radiators
EQYes
Frequency Response42Hz - 20kHz (Manufacturer specified)
Guitar InputYes
IP RatingIP55
LightsYes
Microphone InputYes (2x XLR/6.35mm combo)
OmnidirectionalYes
Party ModeYes (Auracast)
Power BankYes (USB-C)
Power InputUSB-C
Removable BatteryYes
StereoYes
StrapNo
TWSNo
USB PlaybackNo
Weight27.1 lbs (12.3 kg)
WheelsNo
Wi-FiNo
XLR InputYes (2x combo)

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