Marshall Bromley 450 Portable Party Speaker in Black and Brass - 1009212

Marshall Bromley 450 Portable Party Speaker

Carry the night's music everywhere you go with the Marshall Bromley 450 party speaker. This extra-large and stylish audio powerhouse delivers high-powered bass, beautiful acoustics and the brand's iconic vibe, no matter what you're listening to. And it features Stereophonic 360° Sound, placing listeners right in the middle of the music, whether you're playing heavy rap or the newest pop releases. You'll feel every sonic element, from vocals to individual instruments as they move around you. And thanks to the Marshall Bromley 450 speaker's own instrument and mic inputs, you can plug in a microphone or guitar and stage your own performance.

An Iconic Look

Marshall doesn't follow the pack of other audio brands when it comes to looks— you'll see no colorful lights on the Marshall Bromley 450 party speaker. Instead, you get the classic rock vibe of built-in stage lights. A suite of bulbs glow to light across the full face of the vintage black metallic grille. Choose between three presets on the Marshall Bromley 450 to create a show that fits the music. Brass knobs and button controls make it easy for users to adjust the Marshall Bromley 450 speaker as the night goes on. Boost or lower the bass, treble and volume with the twist of a knob while inputs, lights and power can be controlled from the same area. Between the tough black build and the brass controls, the Marshall Bromley 450 brings a look like no other to every evening gathering or late-night party.

Bring Yours Anywhere

While it's not pocket-sized, the Marshall Bromley 450 speaker is made to move along with the party for as long as it lasts (and longer). The audio powerhouse sports 40+ hours of battery life and an easy-to-grab handle along the side of the portable speaker. Easily add an extra six hours of play with a quick 20-minute charge when you're in an emergency. And when it's time to move to another spot, grab the Marshall Bromley 450 speaker by the handle on its side and have your sonic partner move along beside you. If this is the right portable speaker for you, order yours from Abt. If you have any questions, reach out to our team of experts at 800-860-3577 to learn more, or read up with our wireless speaker buying guide.

Features

• True Stereophonic 360° Sound
  Whether you're at a house party or festival campsite – the music always feels close with a sound that gets around. Slip right into dancefloor mode, no matter where you are.
• 40+ Hours of Playtime
  They say nothing good happens after 2am, but with Bromley 450's long playtime that's for you to find out. Just hit play and let your 800-track playlist take over.
• Mic & Instrument Inputs
  Give the crowd a show they'll never forget. Inputs for both mic and instruments let you turn the party into an impromptu gig or karaoke session without any hassle. Mic not included.
• Integrated Stage Lights
  We've been the life of the party since 1962, so we know what makes for a good light show. Choose from three presets that each add to the energy of the party in their own unique way.
• Dirt & Splash Resistant
  Park, festival or backyard – with its IP55 rating, dirt and water splashes are no problem for this portable speaker. It’ll keep the party going anytime, anywhere.
• Built-in Handle
  No matter how secret the location, Bromley 450 is designed to easily bring with you to the party. Featuring a built-in handle, this speaker follows you wherever you go.
• Product Longevitiy
  When designing, we prioritise durability, repairability, and replaceable components to extend product lifespan and reduce waste. Bromley 450 comes with an easily replaceable LFP battery¹, featuring adaptive charging technology that helps protect battery health over time. You can purchase replacement batteries at marshall.com.
  

Footnotes:

• ¹ Bromley 450 uses a Lithium Iron Phosphate (LFP) battery, free from cobalt and with minimal nickel content (~0.25%). This reduces reliance on some critical raw materials linked to social and environmental challenges. Battery still contains lithium and other critical minerals. Compared to conventional Lithium-Ion (Li-ion) batteries, LFP offers a longer cycle life and enhanced safety, with a significantly lower risk of thermal runaway. The trade-off is that LFP technology is generally heavier and has lower energy density, which is why Li-ion remains common in devices where weight and compactness are key. For applications where durability and sustainability matter most, LFP is a strong choice. Please recycle old batteries and electronic products responsibly.