Marshall’s smallest party speaker goes on general sale on October 13, and the best reason to notice it is not the light show.
The Bromley 150 runs for more than 40 hours on a removable lithium iron phosphate battery. When that battery eventually reaches the end of its useful life, owners can replace it instead of treating the entire speaker as disposable.
It is still a party speaker rather than something you throw into a jacket pocket. The cabinet measures 290 x 208 x 297 mm and weighs 6.3 kg, but a built-in handle makes it considerably easier to move than the larger models in Marshall’s Bromley range.
The Battery Can Be Swapped Or Charged Separately
Marshall rates the Bromley 150 for more than 40 hours of playback. A 20-minute quick charge is claimed to provide another five hours, while a complete recharge takes around three hours.
The included LFP battery slides out through a protected side compartment and can be charged separately. That means a spare can be kept ready for longer events without parking the speaker beside a wall outlet.
USB-C works in both directions, so the same port can also provide 5V/3A power to another device. Battery-life figures will naturally depend on volume, lighting and connected equipment, but the replaceable pack gives the speaker a practical advantage even after the headline runtime stops being impressive.
Marshall has extended the repairable approach beyond the battery. The handle, front grille, control knobs, battery lid and corner caps are all listed as replaceable parts. The enclosure uses FSC-certified wood, although Marshall notes that this claim applies only to the wood components, which account for about 23 percent of the product’s weight.
It Can Handle A Microphone And An Instrument At The Same Time
The control panel has moved to the side, leaving the full front grille available for the speaker array and integrated stage lights. There are three lighting presets, ranging from a relatively restrained glow to a more active effect that follows the music.
Two XLR/6.35 mm combo inputs sit behind a protective hatch. Each channel has its own level control, and the two inputs can be mixed with music from the selected source. That allows the Bromley 150 to work as a karaoke setup, a small vocal PA or an amplifier for a mono instrument without adding a separate mixer.
For ordinary playback, there is Bluetooth 5.3 with Auracast and multipoint support, a 3.5 mm auxiliary input and output, and USB-C audio. Marshall quotes a wireless range greater than 70 metres in an unobstructed space.
Unlike the mains-powered Marshall Stanmore IV, the Bromley 150 is designed to leave the house. Its IP55 rating protects it against dust and water splashes, but does not make it suitable for submersion or heavy exposure to water.
Front-And-Back Drivers Spread The Sound Around The Room
Marshall’s True Stereophonic system uses drivers at the front and rear rather than directing everything towards one side of the room.
The speaker combines a 6.5-inch woofer, two 2-inch full-range drivers and a 7.5-inch passive radiator. Three Class D amplifier channels power the system, while the published frequency response runs from 42 Hz to 20 kHz. Marshall claims a maximum sound-pressure level of 97 dB at one metre.
Those specifications do not tell us how controlled the bass remains at higher volume or how evenly the sound carries around a real outdoor space. That will require listening to the finished speaker rather than relying on the numbers. What is clear is that Marshall has kept the more useful party features while reducing the size to something one person can carry without wheels.
The Bromley 150 launches in Black and Brass at $499.99 in the United States, £399.99 in the United Kingdom and €449 in Europe. General availability begins October 13, 2026.
It is not tiny, and $500 is still serious money for a portable speaker. But 40-plus hours, two live inputs and a battery that can be replaced make it more than a smaller version of Marshall’s existing party boxes.
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Images courtesy of Marshall
