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Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Marshall’s Bromley 150 is a portable party speaker with a manufacturer-claimed 40+ hours of playtime, a replaceable battery, stage lighting, and microphone and instrument inputs. It weighs 6.3 kg and has an IP55 rating for dust and water-splash protection, so it is portable in the sense that it has a carry handle and battery power—not a lightweight speaker to casually carry everywhere. Its published specifications describe the feature set, but do not establish how it sounds in a real room or how long the battery lasts in independent testing.
What the Bromley 150 offers for a party
Marshall describes the Bromley 150 as its most portable party speaker. The company lists True Stereophonic 360° sound, integrated stage lights with three presets, and stereo operation. Those are product features, not evidence of independently measured sound quality or even coverage across a particular room.
| # | Preview | Product | Price | |
|---|---|---|---|---|
| 1 |
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Marshall Bromley 450 Portable Party Speaker - Black and Brass | $599.99 | Buy on Amazon |
| 2 |
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Marshall Bromley 750 Portable Party Speaker - Black and Brass | $999.99 | Buy on Amazon |
| 3 |
|
Marshall Acton III Bluetooth Home Speaker - Black | $189.99 | Buy on Amazon |
| 4 |
|
Marshall Acton III Bluetooth Home Speaker - Cream | $189.99 | Buy on Amazon |
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Marshall’s specifications list a 6.5-inch 40 W woofer, two 2-inch 6 W full-range drivers, and a 7.5-inch passive radiator. The stated frequency range is 42 Hz–20 kHz, and the maximum sound pressure level is 97 dB at 1 m. These figures describe the published configuration; they do not establish real-world loudness or performance at a particular volume.
Battery life, charging and portability
Marshall claims 40+ hours of portable playtime and lists a rechargeable, replaceable LFP (LiFePO4) battery. The claim is not accompanied in the cited product information by independent test results or conditions, so treat it as a manufacturer estimate rather than a guarantee for every listening level or use pattern.
#1 Best Overall
- TRUE STEREOPHONIC 360° SOUND: Drivers on all sides so you can feel the beat no matter where you're standing.
- 40+ HOURS OF PORTABLE PLAYTIME: More than enough for your 800-track setlist.
- INTEGRATED STAGE LIGHTS: 3 presets to light up the dancefloor.
- MIC & INSTRUMENT INPUTS: Sing or play along to your favorite music. Microphones not included.
- DIRT & SPLASH RESISTANT (IP55): Ready for parties indoors and out.
What Hi-Fi? reported that a 20-minute charge provides five hours of playtime, attributing that figure to a manufacturer claim. Its report does not state the test conditions, so it is best understood as a reported quick-charge claim, not a universal runtime promise.
The speaker measures 290 × 208 × 297 mm (11.42 × 8.19 × 11.69 in) and weighs 6.3 kg (13.9 lb), according to Marshall’s support specifications. It has a carry handle, but its weight makes it more suited to moving between locations than to lightweight travel.
Rank #2
- TRUE STEREOPHONIC: Crystal-clear 360° sound.
- 40+ HOURS OF PORTABLE PLAYTIME: Keep playing all day and through to the next night.
- SOUND CHARACTER CONTROL: Match the music to the pace of your party. Go from pre-party mingling to the peak and then straight to the after-party with a few simple adjustments.
- INTEGRATED STAGE LIGHTS: Pick from three stage-inspired presets.
- MIC & INSTRUMENT INPUTS: Bromley 750 has been designed with all the inputs you need to connect mics, instruments, and turntables for the ultimate party.
Dust and splash protection
The Bromley 150 is rated IP55. Marshall describes this as protection against dust and water splashes; the rating is not a claim that the speaker is waterproof. Keep that distinction in mind when choosing where to use it.
Microphone and instrument connections
Marshall lists two XLR/6.3 mm combo jacks, which support microphone or instrument connections. That makes the inputs relevant for karaoke or casual playing, though the product page says a microphone is not included. Check the intended microphone or instrument setup before buying accessories; the listed inputs alone do not confirm compatibility with every device.
Rank #3
- ROOM-FILLING SOUND: Acton III has an even wider soundstage than its predecessor, delivering immersive, room-filling Marshall signature sound.
- PAIR, PLAY AND TURN IT UP: Acton III is straight to business, so you can just pair and play without the hassle of a complex set-up
- NEXT-GENERATION BLUETOOTH: Acton III is ready for the future of Bluetooth technology and has been built to deliver next-generation Bluetooth features the moment they are available
- ICONIC DESIGN THAT STANDS APART: Marshall has taken its signature rock ’n’ roll home speaker line-up and given it a stripped-back look that makes a loud statement
- A MORE SUSTAINABLE APPROACH: While staying true to the iconic design that speaks to the brand’s heritage, Acton III has a PVC-free build that comprises 70% recycled plastic and only vegan materials.
Replaceable parts and materials
Marshall says the LFP battery is replaceable. In its 29 September 2026 announcement, Marshall Group also identified replaceable corner caps, the handle, front grille, knobs, and battery lid. The announcement says the cabinet uses FSC 100%-certified wood; that certification applies to the cabinet material, not necessarily every part of the speaker. Spare-part availability may differ by market.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Price and availability depend on market
Marshall’s surfaced regional listing showed a price of $499.99 and pre-order status with estimated mid-October shipping. What Hi-Fi? reported a UK price of £400 and general sale from 13 October 2026. These are dated, market-specific figures rather than a universal price or assurance of current stock; check Marshall or a local retailer for live availability.
Quick Recap
Rank #4
- ROOM-FILLING SOUND: Acton III has an even wider soundstage than its predecessor, delivering immersive, room-filling Marshall signature sound.
- PAIR, PLAY AND TURN IT UP: Acton III is straight to business, so you can just pair and play without the hassle of a complex set-up
- NEXT-GENERATION BLUETOOTH: Acton III is ready for the future of Bluetooth technology and has been built to deliver next-generation Bluetooth features the moment they are available
- ICONIC DESIGN THAT STANDS APART: Marshall has taken its signature rock ’n’ roll home speaker line-up and given it a stripped-back look that makes a loud statement
- A MORE SUSTAINABLE APPROACH: While staying true to the iconic design that speaks to the brand’s heritage, Acton III has a PVC-free build that comprises 70% recycled plastic and only vegan materials.
Specifications at a glance
| Specification | Published information |
|---|---|
| Portable playtime | 40+ hours claimed by Marshall; test conditions are not stated in the product information. |
| Battery | Rechargeable, replaceable LFP (LiFePO4). |
| Drivers | One 6.5-inch 40 W woofer; two 2-inch 6 W full-range drivers; one 7.5-inch passive radiator. |
| Frequency range | 42 Hz–20 kHz, per Marshall. |
| Maximum sound pressure level | 97 dB at 1 m, per Marshall. |
| Connectivity and features | Bluetooth 5.3 Auracast; two XLR/6.3 mm combo jacks; True Stereophonic 360° sound; three stage-light presets. |
| Protection | IP55; Marshall describes dust and water-splash protection. |
| Dimensions and weight | 290 × 208 × 297 mm (11.42 × 8.19 × 11.69 in); 6.3 kg (13.9 lb). |
Sources
- Marshall Bromley 150 product and support information
- Marshall Group announcement, 29 September 2026
- What Hi-Fi? report, 29 September 2026
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
