The Bromley 750 looks like a Marshall amplifier, which is exactly the point. It features the classic black-and-gold color scheme, the iconic Marshall logo on the front, and a faux-leather exterior and metal grille that give it a premium feel. If you’re tired of party speakers that look like oversized plastic toys, this is the antidote.
The speaker’s build quality is very good. The controls toward the top of the front are easily accessible and feel substantial, not cheap. The speaker has an IP54 water-resistance rating, which means it’s protected against dust and splashes. Marshall has also built in a drainage system to protect the tweeters from rain or spills. That’s helpful for a speaker that, when used as intended, is likely to be around folks who might be more likely to slosh their beverage as the night progresses.
(Credit: Christian de Looper)
I like that there are tons of controls. You get individual dials for volume, bass, and treble, along with a power toggle, a button to switch between inputs, and a media control toggle that you press to play or pause and push left or right to skip tracks. A stylized M button is customizable through the app, with the default setting triggering a Stroboscope lighting effect. You also get separate volume controls for the two input channels, an effect dial that moves between delay, delay/reverb, and reverb, and a light effect button that cycles through three presets or turns the lights off entirely.
The most interesting control to me is the so-called Sound Character knob. At one extreme, you’ll get Dynamic, with the other extreme being Loud, though you can choose any level in between those. The basic gist is that you’re deciding how much to compress the audio so the whole thing can be turned up, making the quieter parts of a track more audible in a loud room. The trade-off of making the quiet parts louder, however, is that you kill the dynamics of the track. I generally preferred to keep it at the Dynamic end of the spectrum, but I can easily imagine the knob being useful in a party setting.

(Credit: Christian de Looper)
Like any good party speaker, the Bromley 750 features lighting effects, but they work a bit differently than usual. Instead of the colorful disco-style lights you get on most party speakers, Marshall has gone with only warm white lights on the front, designed to look like concert lighting. There are three presets for the lights, one of which reacts to audio, along with an option to turn the lights off. I really liked the effect, and Marshall’s approach definitely fits better with the live music vibe the company is going for.
The Bromley 750 is certainly not a small speaker. It measures 25.7 by 16.3 by 14 inches (HWD) and weighs 52.7 pounds. You won’t be casually tossing it in the back of your car. That said, Marshall has made it as portable as possible with built-in wheels, a retractable handle, and side grips. These definitely help, and I was able to move it around without too much trouble.

(Credit: Christian de Looper)
The speaker connects via Bluetooth 5.3 with support for Auracast and multipoint pairing, so you can connect multiple devices simultaneously. It supports AAC and SBC codecs, but there’s no hi-res codec support, which is a little disappointing at this price point. For wired connections, you get an RCA input, an aux input, and an aux output for daisy-chaining the speaker to others. On top of those, you get two XLR/6.35mm combo jacks for microphones or instruments, and a USB-C port for charging your device while you use the speaker. The speaker isn’t designed to sound like an actual Marshall guitar amp, but it can still be used for karaoke or similar applications.
Inside, the Bromley 750 packs two 10-inch woofers, two 5.25-inch midrange drivers, two 1-inch tweeters, and two 0.8-inch tweeters. It’s a solid driver array designed to make music audible all around the speaker. While the back definitely looks like the back, it doesn’t necessarily sound like it.
