Marshall’s new Stockwell III packs 40 hours of battery life – with repairable parts designed to keep it going for longerMarshall has unveiled the Stockwell III, the next generation of its portable Bluetooth speaker range and the first major update to the Stockwell lineup since 2019.
Designed for listeners “who want powerful sound without sacrificing portability”, Stockwell III brings a host of upgrades aimed at both performance and longevity.
Chief among them is Marshall’s True Stereophonic 360° sound technology, which fills a space with immersive audio from every angle, eliminating traditional “listening sweet spots” associated with typical portable speakers.
The new speaker also comes with a ‘Dynamic Loudness’ feature, which automatically balances bass, mids and treble as volume changes, helping preserve detail and clarity whether you’re listening quietly at home or cranking it up outdoors.

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Beyond its acoustic improvements, Marshall is putting a greater emphasis on lifespan as well. The Stockwell III delivers more than 40 hours of wireless playtime on a single charge – double the battery life of its predecessor – while adopting a more repairable design intended to keep the speaker in service for longer.
To that end, key components including the battery, carry strap, silicone sleeve and front and rear grilles can be replaced individually, reducing the need for a full product replacement.
Credit: Marshall
Aesthetically, the speaker remains unmistakably Marshall. The Stockwell III features a guitar-inspired PU leather carry strap, amp-inspired tactile control knobs, solid metal grilles and the brand’s signature logo.
The brass control panel has also been reworked with more intuitive controls, including quick-access presets via the M-button and easier track navigation through a dedicated media jog control.
Built for life beyond the living room, the Stockwell III is IP55-rated for dust and water resistance. It also doubles as a power bank via USB-C, allowing users to charge their smartphones and other devices while on the go.
Priced at £199.99, the Marshall Stockwell III will be available from 18 August in black and brass or cream finishes.
Learn more at Marshall.
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