I just tested Marshall’s first party speaker, and it’s perfect for musicians, karaoke enthusiasts and everyone in between

Marshall has had quite the year, packed with speaker and soundbar launches. The latest to join the fray is the Bromley 750. It’s the brand’s first-ever party speaker, and all I can say is, “What a debut!”

It looks incredible, feels premium and sounds even better. The Bromley 750’s bass output is powerful and meaty, and the treble and mid-range are well-defined, providing a wide soundstage that effortlessly fills a room with sound.

The Bromley 750 even doubles (or triples) as an amp for electric/acoustic guitars and a karaoke machine, thanks to the array of wired and wireless connectivity options available. With up to 40 hours of battery life, and reactive lighting for immersion, this party speaker is hard to fault… and I wouldn’t expect anything less for the price.

It’s extremely versatile, but is it the best Bluetooth speaker for you? Find out more in my full Marshall Bromley 750 review.

Marshall Bromley 750 review: Cheat sheet

• What is it? Marshall’s first-ever party speaker with 500W power output and plenty of wired and wireless connectivity options
• Who is it for? For musicians, mobile DJs, and anyone who wants to soundtrack a large gathering
• How much does it cost? $1,299 / £899, so it’s a lot
• What do we like? The powerful bass, immersive lighting, connectivity options, wheels and handles for easy transport, and 40 hours of battery life
• What don’t we like? The unpolished app and lack of multi-speaker pairing

Marshall Bromley 750 review: Specs

Marshall Bromley 750 review: Price & availability

Marshall is mostly known for its guitar amps, portable speakers and headphones, and it has now ventured into the realm of massive party speakers. Debuting in the fall of 2025, the Marshall Bromley 750 is the British audio giant’s first-ever party speaker. Available in Marshall’s trademark Black and Brass colors, the Bromley 750 combines luxury and power.

The Bromley 750 is the most expensive speaker I’ve tested yet — and I’ve reviewed my fair share of them. It retails for $1,299 at Amazon U.S. / £899 at Argos U.K. No, your eyes are not deceiving you, it really does cost an arm and a leg!

So, if it’s not necessarily for the regular, casual music listener, who is it for? As is the nature of party speakers, the Bromley 750 is designed for mobile DJs, outdoor events, large gatherings, and small gigs.

It’s important to note that this price point isn’t uncommon for party speakers. The Bromley 750’s primary competitors are priced similarly, such as the JBL PartyBox 720 ($1,099), the Sony ULT Tower 9 ($899) and the Soundboks 4 ($999). All formidable speakers in their own right, but if it’s class and top-notch quality you’re after, the Bromley 750 is the ideal choice.

Marshall Bromley 750 review: Design & controls

• Classic Marshall premium build quality
• Built-in handles for easy transport
• Amp-like tactile controls

I use the Marshall Monitor III ANC headphones every day to listen to music, so I’m very familiar with the brand’s sleek, premium design. I’ve always loved the way Marshall’s speakers are designed too, so it’s great to see that this is also the case with the Marshall Bromley 750.

The Bromley 750 looks like an expensive unit, with matte Black and Brass finishing, a well-defined grille on the front through which LED lamps shine (more on this soon), and top, side and rear drivers all covered with grilles too. Marshall branding on the front grille looks fantastic, as always, and all the ports are easily accessible and signposted.

But let’s talk about the elephant in the room. The Bromley 750 is a huge speaker, measuring 25.7 x 16.3 x 14 inches, and it weighs 52.7lbs (a little lighter than the 68.3lbs JBL PartyBox 720). It’s a lot, but it isn’t a flaw. This is a party speaker, after all, meant to soundtrack your parties. You might think that given its size and weight, the Bromley 750 is difficult to transport, but that couldn’t be further from the truth.

Akin to a suitcase, the speaker sports large wheels at the bottom, a suitcase-style handle to pull it, as well as handles on the side to carry it up stairs or while unloading it out of a car’s boot, for instance. The handles and wheels make it much easier to carry around, as I found when I took it up a couple flights of stairs and used the wheels to move it from one room to another.

Marshall’s signature build quality extends to the Bromley 750’s controls too. There are multiple dials and buttons above the front grille, and they look like they belong on a guitar amp. Each button provides fantastic tactile feedback when pressed while turning the dials feels extremely satisfying — and it made me feel like a rockstar, to be honest.

These buttons and dials provide plenty of control over the Bromley 750’s sound, enabling you to change the volume, bass, treble, reverb/delay, the lights, and the Sound Character. The Sound Character lets you adjust audio on a scale of Dynamic to Loud, depending on your listening style. It works well. I opted for a balanced Sound Character for most of my testing as that felt like the sweet spot for me, but it’s good to experiment to find out your preferred profile.

Overall, the Bromley 750 is not only designed beautifully, but its practical controls and carriability make it seem like Marshall has thought well and hard about how to make it stand out.

Marshall Bromley 750 review: Features

• IP54 waterproof rating
• Immersive and adjustable lighting
• No stereo pairing

One of the Marshall Bromley 750’s key selling points, for me, is its immersive and adjustable lighting. Several LED lamps are integrated into the speaker’s front, and the dancing lights never look garish or in-your-face.

I much prefer this classy lighting over the JBL PartyBox 720’s RGB one. It keeps in line with the speaker’s overall design. There are three different modes for you to choose from: an ambient setting as well as two dynamic modes where the light reacts to the music playing. Press the ‘M’ button and you get a burst of strobe lighting — so there’s something for everyone.

I adore the Bromley 750’s reactive lighting mode, and it worked well with nearly every song I played, whether that was a heavy rock track or instrumental, ambient one. In ‘Come Around’ by 070 Shake, the lights went off and back on every time the instruments kicked in throughout the song, and it felt like the stage lighting you see at concerts. Über cool.

The Bromley 750 carries an IP54 waterproof rating, which means that the speaker is protected against solid particles and light splashes of water (but not strong jets or immersion in water). This is better than the JBL PartyBox 720’s IPX4 rating as the Bromley 750’s IP54 rating means it’s dust-protected.

Marshall’s speaker also features a drainage system around the top tweeters which ensures any moisture that does get in doesn’t damage the speaker. Whether you’re listening in a parking lot (which I did during testing) or are treated to light rain while doing so, the Bromley 750 should be just fine.

I am, however, disappointed that the Bromley 750 doesn’t feature multi-speaker pairing so you can’t create stereo sound — which you can with the Soundboks 4 and the JBL PartyBox 720. This feels like a missed opportunity, especially given that this speaker is designed for large gatherings, and you won’t be able to have two of the same play the same music simultaneously.

If you don’t mind the omission of multi-speaker pairing, the Bromley 750 has more than enough features for you to fully enjoy it.

Marshall Bromley 750 review: Connectivity & app

• Bluetooth 5.3 with AAC, SBC and LC3
• Many ports for wired playback, karaoke and instruments
• App could do with some polishing

The Marshall Bromley 750 has a plethora of connectivity options, both wired and wireless. In terms of wireless connectivity, the Bromley 750 utilizes Bluetooth 5.3 with support for AAC, SBC and LC3 codecs to seamlessly connect to your smartphone, laptop or tablet.

There’s also multipoint connectivity which means you can connect two Bluetooth devices simultaneously and swap between them as and when. This worked well with both my Google Pixel 7 Pro and MacBook Air M2, and I didn’t notice any connectivity issues or drops either.

Wired connectivity is in spades too, and all ports are located around the back of the speaker. You get a 3.5mm aux port and USB-C for wired playback, two XLR/6.35mm combo ports for microphones and acoustic/electric guitars, and RCA ports for keyboards and turntables.

With reverb and delay effects on-board too, the Bromley 750, then, isn’t just a speaker: it’s an amp and a karaoke machine all-in-one. I plugged an electric guitar into the Bromley 750, noodled it for a while, and it worked very well. I’m sure musicians will appreciate being able to use the speaker for both playback and live performances.

My primary criticism of the Bromley 750 doesn’t have to do with the speaker, but with the app. The Bromley 750 utilizes the same companion app as Marshall’s headphones — and it’s very underwhelming.

The app omits most control options. You can’t adjust the equalizer, the delay/reverb effects for karaoke and instrument use, or the Sound Character. All of this can be adjusted only via physical buttons and dials on the speaker, which is a shame because you won’t necessarily be standing next to the speaker at all times, and I expected better.

Marshall Bromley 750 review: Sound quality

• 500W output for powerful bass
• Clear, refined vocals
• Can get very loud!

If there’s one area I absolutely cannot fault the Marshall Bromley 750, it’s sound quality. This party speaker is loud, mighty and it doesn’t give you anything to complain about. Audio never sounds tinny or distorted, regardless of the volume you’re playing at.

This is a well-endowed speaker. Its 500W of Class D amplification means you’re getting almighty bass output, and the two 1-inch 7W tweeters as well as two 0.8-inch 14W ones deliver best-in-class treble, ensuring high-frequency sounds never sound too piercing. Great in theory, even better in real-world scenarios. To test the Bromley 750, I listened to my usual mix of songs and genres on Qobuz, the best music streaming service for hi-res audio, over Bluetooth.

I started off by testing the Bromley 750’s bass capabilities, and I played ‘Money’ by Pink Floyd. The bassline sounded impeccable and faultless, with each one of Roger Waters’ notes sounding loud and clear — but never booming. The bass didn’t overpower the vocals or other instruments in the song either. Mind you, this was with the bass dial turned down to 3, so I turned it up all the way to 10, and I was treated to the ground under my feet vibrating and shaking, and it was absolutely fantastic.

I also appreciated the Bromley 750’s True Stereophonic 360° sound here, which ensures the music sounds the same regardless of where you’re standing. The sound of coins and slot machines going off at the beginning of ‘Money’ sounded like they were coming from around me, which made for an immersive listening experience.

Although I could go on and on about how even the saxophone solo never sounded lethargic or weak compared to the bass in ‘Money,’ I’ll move on to other songs. To test vocals, I listened to Paris Paloma’s ‘Labour,’ and the track sounded beautiful. I turned the Sound Character dial more towards Dynamic which highlighted Paris’ vocals, making them sound more clear, defined, and three-dimensional with high-fidelity (which slightly makes up for the lack of LDAC and aptX).

The backing vocals were still loud enough so I could hear them, but I loved the emphasis on the lead vocals. This could be a great setting for karaoke too, where you want to highlight the singer’s voice over the backing track.

I then gave Four Tet’s ‘Three Drums’ a spin to test how the Bromley 750 handled a drum-heavy track featuring three soft drum loops and breaks, and melodic synth leads. The percussion instruments — including flutes and synths — were expressive and controlled, creating a wonderful, harmonious soundscape just as the artist intended. As the downtempo gradually slowed down into the ambient outro, the Bromley 750 ensured the transition was seamless.

The Bromley 750 gets very loud too, but you need to turn the volume up to 10 and the Sound Character all the way up to Loud for that, and this setting is best for party, dance or electronic music, as I found in my testing.

Listening to Charli xcx’s ‘Von Dutch’ made me feel like I was actually at her gig, with the meaty bass and electropop instruments sounding characterful.

Of course, I listened to the Bromley 750 outdoors too — in our office’s parking lot, no less. Outdoors, the speaker sounded extremely loud too, but never once was it distorted or less refined as it was indoors. The bass in ‘Immigrant Song’ by Led Zeppelin sounded rich and lively, while the high-pitched vocals were rich and velvety.

This is a very powerful, very capable speaker, and the Bromley 750 is fit for any genre. Its wide soundstage makes it perfect for casual listeners as well as audiophiles, and musicians too. From heavy rock tracks like ‘Holy Mountains’ by System of a Down’ to instrumental ones like ‘No Time for Caution' from Interstellar, the Bromley 750 impressed me on all fronts.

Listen along to my review with the Marshall Bromley 750 testing playlist:

Marshall Bromley 750 review: Battery life

• 40 hours of battery life
• 20 minutes of charge = 5 hours of playback
• Battery pack double as a power bank

If long battery life is on the top of your priority list, then the Marshall Bromley 750 is sure to impress you. Marshall claims that on a single charge, the Bromley 750 can last up to 40 hours — and that’s a lot. In comparison, the JBL PartyBox 720 is rated for 15 hours only, while the Sony ULT Tower 9 can last up to 25 hours between charges.

The only competitor that outdoes the Bromley 750 here is the Soundboks 4, rated for 40 hours… but our testing showed that this drops significantly, to just six hours, at high volumes. Thankfully, that isn’t the case with the Bromley 750. While I wasn’t able to kill the battery entirely during testing, I can say for certain that the speaker can comfortably last more than seven hours on full volume, so you’re getting bang for your buck here.

The Bromley 750’s LiFePO4 battery is replaceable, so you can always carry a couple of spare ones if you’re worried about running out of charge. The battery pack is slotted securely in the back, covered with a hard plastic hatch. What’s even better is that the Bromley 750’s battery can be used as a power bank for your phone, tablet or laptop, thanks to its USB-C port.

Its USB-C port can also be used to charge the battery itself, and a quick 20-minute charge should provide up to five hours of playback. All in all, when it comes to power and battery life, the Bromley 750 is a winner.

Marshall Bromley 750 review: Verdict

If it’s a good-looking and fantastic-sounding party speaker you’re after, you won’t go wrong with the Marshall Bromley 750. I could wax poetic about its premium, Black and Brass design and reactive lighting all day long. Not only does the speaker look great, it’s built well too, and features wheels and handles for easy transport (which you need, because it’s a very heavy speaker).

But its biggest selling point is the faultless sound profile. With plenty of equalizer and Sound Character customization available via onboard buttons and dials, the Bromley 750 can be tailored to your listening style.

Bass is powerful, vocals are loud and clear, and everything is well-balanced. I also love how, because of the ports on its body, the speaker doubles as a guitar amp… and a karaoke machine! The 40-hour battery life is reliable too, and the speaker’s battery pack can be used as a power bank for your phone.

There is no multi-speaker pairing, though, and I believe the app could have been much better. Although the Bromley 750 is, by no means, cheap, it’s well-worth the investment if you want a loud speaker to soundtrack parties, or if you’re a mobile DJ or a musician. It excels at delivering exceptional sound quality, and really, it is peerless.