Forget Bose — there's no better party speaker on the planet than the brand-new Marshall Bromley 450

Marshall Bromley 450
(Image credit: Tom's Guide)

One thing I love about my job is that there's never a shortage of audio gear to test: When I'm listening on my own, I use the Marshall Monitor III over-ear headphones. When I'm chilling with my partner or we're hanging out with friends, I turn to one of the best Bluetooth speakers. And if we're having a party? It's gotta be a party speaker — and there are few (if any) better than the Marshall Bromley 450.

The Bromley 450 is the British audio giant's second-ever party speaker, and it joined its bigger sibling, the Bromley 750, in March 2026. I was one of the first reviewers to test the Bromley 450, and I immediately fell in love with it. It looks good, it sounds better, and its battery lasts oh-so-long. I've found it difficult to fault, really, and testing the Bromley 450 got me thinking, "Does it sound better than other party speakers in the same price range?"

Marshall Bromley 450
Marshall Bromley 450: $799 at Amazon

A plethora of wired and wireless connectivity options make the Marshall Bromley 450 not just a powerful speaker, but a stunning amp and karaoke machine as well. Music sounds glorious and highly detailed across genres, while Auracast works like a charm, and the reactive LED lighting helps with your immersion. 40-hour battery life and IP55 waterproofing make it a winner.

Luckily, in our testing lab, we had a Bose S1 Pro+, so I listened to it for a while and immediately knew that I preferred the Bromley 450 (sorry, Bose). There's plenty to love about the Bromley 450: from its exquisite design to the drool-worthy light show and delectable sound quality. Few brands come close to the prestige Marshall's speakers and headphones ooze, and it's no different in the case of the Bromley 450. Here's why it's my top pick for the party speaker of 2026.

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I can't stop staring at it

Marshall Bromley 450 party speaker

(Image credit: Tom's Guide)

When John Keats wrote "A thing of beauty is a joy forever," he was clearly talking about the Marshall Bromley 450, because I would very much like to place it in my apartment, turn on the LED lamps, and stare at it for as long as I can. It's one of the best-looking speakers I've had the pleasure of testing. No, scratch that. It's one of the best-looking anything I've ever used.

I'm no stranger to speakers. I've tested many during my time as a tech journalist. I've seen the good, the bad, the ugly, and the Bromley 450 very clearly belongs in the first category. It really is a thing of beauty. Its matte black finish feels exquisite to touch and pleasing to the eye, while its brass and gold accents add a premium panache to the impressive package.

Adding to the Bromley 450's appeal are its integrated LED lamps, located behind the front grille. They light up in white and yellow, and depending on the lighting mode you choose, they can dance and react to the music you're playing too, to create an immersive light and sound show. Beautiful.

I could wax poetic about the Bromley 450 all day long if I could but I wouldn't want to bore you, of course. Marshall's trademark tactile controls are present on the Bromley 450 in spades, as you can control basically every sound and light setting via the onboard buttons and dials. Thank goodness for that because the companion app is... underwhelming, at best.

No dearth of features

Marshall Bromley 450 party speaker

(Image credit: Tom's Guide)

The Marshall Bromley 450 has everything you could need in a proper party speaker. Want to play music from your phone? Bluetooth 5.3 with support for SBC, AAC and LC3 codecs. Want to connect two smart devices at the same time? Multipoint connectivity. Want to plug your phone in for hi-res wired playback? 3.5mm aux or USB-C is at your disposal.

Or imagine you're hosting a party and someone says, "Hey, I brought my guitar to the party and want to serenade everyone with Oasis' Wonderwall, can I do that?" You've got the Bromley 450, so you can reply with, "My Bromley 450's got two XLR/6.35mm combo ports for guitars and RCA ports for keyboards and turntables so technically you can, but I don't want you to bore everyone with Wonderwall, so let's refrain from that." Sorry, Oasis fans, it is what it is, but at least you can plug your guitar into the Bromley 450 as it doubles/triples as an amp and a karaoke machine!

In addition to the connectivity options, the Bromley 450 is also protected against dust, dirt and water as it's IP55-rated, so it's perfect for outdoor parties. If you've got another Bromley 450 or 750, or even another Auracast-enabled Marshall speaker, you can sync them up any number of them to play at the same time, making the Bromley 450 even better for big parties.

But does it sound good?

Marshall Bromley 450

(Image credit: Tom's Guide)

Via its onboard controls, you can adjust the Marshall Bromley 450's bass, treble, add reverb and delay effects if you're using the karaoke feature or instruments, and adjust the lighting.

"Sounds great, but does the speaker sound good?" I hear you ask, and I'm here to tell you, dear reader, that it sounds excellent. The sound quality really doesn't give you much to complain about, and I had to be really nit-picky to find any faults with it. And the faults I found? You'll need to play around with the bass and treble dials to get the perfect sound — but apart from that, that's about it.

The Bromley 450 is a powerful, well-endowed speaker, and you can learn all about its internal hardware in my full review. All I'm going to tell you in this article is that it sounds phenomenal. I thought the treble, especially, sounded brilliant. Crisp, vibrant, never overzealous or shrill. Sibilance and plosives gave me nothing to moan about as the sounds didn't bleed into one another, especially in tracks like 'White Feather Hawk Tail Deer Hunter' by Lana Del Rey, where she ad-libs different 's' and 'tss' sounds.

This is a party speaker, though, and chances are you'll be using it to listen to dance music or bass-heavy electronic tracks, and it's the ideal speaker for high tempo music. The bass is warm with plenty of low-end impact and detail in the mid range, and it never sounds booming in tracks like 'Tomorrow is Another Day' by M-High, and you can hear each individual string pluck in songs like 'Money' by Pink Floyd. I have no notes.

Unlimited powaaaaah

Marshall Bromley 450

(Image credit: Tom's Guide)

The cherry on top of this beautiful cake is the Marshall Bromley 450's battery life. Marshall says that the speaker can last for up to 40 hours between charges. This will naturally depend on usage conditions, such as the LED lighting and volume. While I couldn't drain the entire battery during my testing period, I noticed that the battery had dropped by only 15% after six hours of listening to the speaker at full volume and with reactive lighting turned on.

What's even better is that you can remove the Bromley 450's battery pack (securely slotted in the back and protected by a hard plastic cover) and use it as a power bank for your other devices. It's got a USB-C port on it so you can plug in your headphones, phone or laptop. I think that's very cool, and it's something I loved about the Bromley 750 too.

I absolutely adore the Bromley 450. It's pretty, its sound quality is stunning, and it lasts a long, long time. What more could you possibly need?


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Nikita Achanta
Senior Writer, Reviews

Nikita is a Senior Writer on the Reviews team at Tom's Guide. She's a lifelong gaming and photography enthusiast, always on the lookout for the latest tech. Having worked as a Sub Editor and Writer for Canon EMEA, she has interviewed photographers from all over the world and working in different genres. When she’s not working, Nikita can usually be found sinking hours into RPGs on her PS5, flying a drone (she's a licensed drone pilot), at a concert, or watching F1. Her work has appeared in several publications including Motor Sport Magazine, NME, Marriott Bonvoy, The Independent, and Metro. You can follow her photography account on Instagram here.

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