Marshall is taking on JBL and other party speaker makers in a 'very homogenous' market — and explains why it wants to make models that 'trigger your senses'

Knobs on the Marshall Bromley 450.

I’ve tested more than 40 Bluetooth speakers during my time here at TechRadar, and I always get most excited to test the party speakers. They’re large, powerful and — for someone who loves house music like I do — ideal for pumping out tunes with impactful and immersive bass.

This is an area where JBL has been pretty dominant. In 2025, JBL launched more of its high-performing PartyBox speakers, and its owner, Harman, claimed that the brand had “solidified its position as the number one portable and party speaker brand”. It’s hard to dispute that. Not only is JBL shipping a whole lot of units, but its party speakers come with impressive power, AI-optimized audio, modern features such as Auracast, and generally moderate pricing.