The compact portable speaker with big updates Marshall, August 18, 2026

40+ hours of portable playtime

Pack your day with listening sessions from lights on to lights out. Wake up, make art, go skate, wind down. One charge delivers a solid 800 songs. Fill every hour with music that stays with you

True Stereophonic 360° sound

Forget sweet spots and tune into Stockwell III's unique form of multi-directional audio. Get the same quality and fullness of powerful signature sound as you move around it.

Dust & water resistant

Sure, it may look more like a timeless design piece, but don’t be fooled. Stockwell III is at home indoors but never afraid to venture outside. It braves water splashes and licks of paint from all directions.

Dynamic loudness

Never lose the details that make a song. Even at lower volumes, bass and treble rise to keep the kick and clarity. When you turn it up, your music levels out just as it should for a naturally balanced sound.

Tactile controls

A brand-new standalone power button, M-button, and media jog join the classic brass panel. Get instant access to your presets and skip through your favourite tracks with ease.

Charging bank

Stay on top of battery life wherever you take your music. Streaming from your phone? Connect it to the USB input, charge it up, and never let a listening session get cut short.

MAKING OUR PRODUCTS LAST LONGER

Every time we design new products, we prioritise durability, repairability, and replaceable components to extend their lifespan and reduce waste. Stockwell III comes with a consumer replaceable battery and has enhanced settings in the app to preserve the battery lifespan. You can purchase replacement batteries at marshall.com.

MATERIALS

Stockwell III contains 27% recycled material by weight¹, reducing the need for virgin resources. This helps minimise environmental and social impacts associated with raw material extraction and processing. Using recycled content also helps lower carbon emissions compared to producing virgin materials². ¹Includes post-consumer recycled PC, post-consumer recycled PC-ABS, pre-consumer recycled aluminium alloy and post-consumer recycled neodymium (rare-earth elements). Calculations are based on total product weight, excluding accessories and packaging. ²Industry data indicates recycled materials generally have lower carbon footprint than virgin materials; actual reductions vary by material and process.

Product details

Playtime 40+ hours

Stereo/Mono Stereo

Dust & water resistance IP55

Dimensions 180 x 162 x 74 mm 7.1 x 6.4 x 2.9 in

Press Release Documents

Website Address

https://www.marshall.com/
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