The Marshall Bromley 150 is a 6.3 kg portable party speaker with a manufacturer-claimed 40+ hours of playtime, IP55 dust and splash protection, stage lights, and inputs for a microphone or instrument. Those specifications make it designed for parties; they do not establish how it sounds in a real room or how long its battery lasts in independent testing.
What the Bromley 150 is designed to do
Marshall describes the Bromley 150 as its most portable party speaker. The company says it was released in 2026. Its feature set combines Bluetooth playback, lighting, and physical inputs, aiming at gatherings where users may want more than a conventional portable speaker. That is Marshall’s product positioning, not an independently tested verdict.
Marshall lists True Stereophonic 360° sound and stereo operation. The specifications describe the design, but no independent listening test or room-coverage measurement is established here, so they cannot tell you how evenly the speaker will fill a particular space.
How long does the battery last?
Marshall claims 40+ hours of portable playtime. Treat that as the manufacturer’s stated figure: no independent battery test conditions or results are available here, and actual runtime can depend on use. The speaker has a rechargeable, replaceable LFP (LiFePO4) battery.
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#1 Best Overall
- MARSHALL SIGNATURE SOUND: Features Marshall signature sound with Dynamic Loudness that adjusts the tonal balance of the audio to ensure your music sounds brilliant at every volume.
- TRUE STEREOPHONIC: A unique form of multi-directional sound from Marshall. Experience superior spatial and binaural sound that flows around you and fills any space.
- 32+ HOURS OF PORTABLE PLAYTIME: Offers 32+ hours of portable playtime on a single charge, so you can keep listening all day and into the next.
- DUST AND WATERPROOF: With an IP67 dust and waterproof rating you can submerge it in 1 m (3 ft) of water for up to 30 minutes.
- BUILT-IN MICROPHONE: Comes with a built-in microphone, so that you can take calls completely hands-free.
What Hi-Fi? reported that a 20-minute charge provides five hours of playtime, attributing the figure to the manufacturer. The report does not give test conditions, so it is best read as a reported charging claim rather than a guaranteed result for every use.
Can it handle outdoor use?
The Bromley 150 is rated IP55. Marshall describes this as protection against dust and water splashes; it is not a waterproof rating. Its 6.3 kg weight and carry handle make it movable, but its dimensions—290 × 208 × 297 mm (11.42 × 8.19 × 11.69 in)—make it a substantial item to carry compared with a pocket-size Bluetooth speaker.
Rank #2
- MARSHALL SIGNATURE SOUND: Features Marshall signature sound with Dynamic Loudness that adjusts the tonal balance of the audio to ensure your music sounds brilliant at every volume.
- TRUE STEREOPHONIC: A unique form of multi-directional sound from Marshall. Experience superior spatial and binaural sound that flows around you and fills any space.
- 32+ HOURS OF PORTABLE PLAYTIME: Offers 32+ hours of portable playtime on a single charge, so you can keep listening all day and into the next.
- DUST AND WATERPROOF: With an IP67 dust and waterproof rating you can submerge it in 1 m (3 ft) of water for up to 30 minutes.
- BUILT-IN MICROPHONE: Comes with a built-in microphone, so that you can take calls completely hands-free.
Inputs, lighting and sound specifications
Marshall lists two XLR/6.3 mm combo jacks for microphone or instrument connections. A microphone is not included, according to the product page. The speaker also has integrated stage lighting with three presets, for users who want light effects without adding a separate lighting unit.
Marshall’s published technical specifications include:
Rank #3
- OPTIMIZED FOR LOUD: . Middleton utilizes True Stereophonic, a unique form of multi-directional stereo sound from Marshall to deliver the ultimate immersive experience wherever you roam.
- ULTIMATE PORTABILITY, RAIN OR SHINE: Equally at home in the festival mud or on your polished sideboard thanks to its iconic yet durable design. With a rugged IP67 dust- and water-resistant build, a bit of rain and dirt won’t get under its skin.
- 20+ HOURS OF PORTABLE PLAYTIME: 20+ hours of portable playtime on a single charge. When you do need to charge, plug in your speaker and you’ll be back to full battery in only 4.5 hours – the next encore is never far away.
- STACK MODE: Connect Middleton to other Middleton speakers and amplify the sound with a multi-speaker Stack session. Stack them up or spread them out for a colossal sound that fits whatever space you’re in.
- SUPERIOR, HASSLE-FREE LISTENING: Drop straight into your music with no fuss – just pair and play. Nothing stands between you and the music you want to hear. If you want a more customised sound, adjust the bass and treble on the top of the speaker, or download the app to control the sound wirelessly.
- Frequency range: 42 Hz–20 kHz
- Drivers: one 6.5-inch 40 W woofer and two 2-inch 6 W full-range drivers
- One 7.5-inch passive radiator
- Maximum sound pressure level: 97 dB at 1 m
- Bluetooth 5.3 with Auracast
These are manufacturer specifications, not independent measurements of sound quality, usable volume in a room, or performance at a particular distance.
Repairability and materials
Marshall says the battery is replaceable. In its announcement, Marshall Group also identifies replaceable corner caps, handle, front grille, knobs and battery lid. Availability of spare parts may differ by market. The announcement says the cabinet uses FSC 100%-certified wood; that certification applies to the stated cabinet material, not necessarily every part of the speaker.
Rank #4
- 50+ HOURS OF PORTABLE PLAYTIME: Portable playtime for over two days.
- TRUE STEREOPHONIC: 360° sound you can hear wherever you stand.
- DUST & WATER-RESISTANT: IP54 rated, resistant to dust and water splashes.
- DYNAMIC LOUDNESS: Perfect audio at every volume.
- TACTILE CONTROLS: Intuitive controls in Marshall’s signature style.
Price and availability
Prices and launch timing depend on the market and date. Marshall’s surfaced regional listing in 2026 showed $499.99, with pre-orders and estimated mid-October shipping. What Hi-Fi? reported a UK price of £400 and general sale from 13 October 2026. These dated listings are not a guarantee of current stock or price; check Marshall or a local retailer for live availability.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Who should consider it?
The Bromley 150 is worth considering if you want a portable speaker with a handle, long claimed battery life, splash and dust protection, built-in lighting, and direct microphone or instrument inputs. Its weight and size matter if you plan to carry it often, while the absent microphone means karaoke requires a separate compatible mic. If sound quality, room coverage, or battery performance under your specific conditions is the deciding factor, the listed figures alone cannot settle that question.
Quick Recap
Best Value
- MARSHALL SIGNATURE SOUND: Features Marshall signature sound with Dynamic Loudness that adjusts the tonal balance of the audio to ensure your music sounds brilliant at every volume.
- TRUE STEREOPHONIC: A unique form of multi-directional sound from Marshall. Experience superior spatial and binaural sound that flows around you and fills any space.
- 32+ HOURS OF PORTABLE PLAYTIME: Offers 32+ hours of portable playtime on a single charge, so you can keep listening all day and into the next.
- DUST AND WATERPROOF: With an IP67 dust and waterproof rating you can submerge it in 1 m (3 ft) of water for up to 30 minutes.
- BUILT-IN MICROPHONE: Comes with a built-in microphone, so that you can take calls completely hands-free.
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.
