Marshall releases updated versions of its Acton and Stanmore Bluetooth speakers: the Acton IV and Stanmore IV. Across both models, the company says the internal design is updated to improve sound coverage, including upgraded tweeters and revised bass ports intended to strengthen lower-frequency output and help the speakers fill a room. The refreshed models replace the Acton and Stanmore versions that came out about four years earlier.

Both outlets also highlight repairability as a core change. Marshall says the new speakers are built with replaceable components, including parts such as knobs and feet, designed to make servicing and repairs easier than before. Digital Trends adds that the updates include Bluetooth Auracast, which is described as part of the connectivity features on the new models. The sources also note placement flexibility improvements, suggesting users can position the speakers more easily for better results.

Overall, the announcements focus on acoustic refinements—particularly bass performance—alongside increased ability to maintain or replace parts over time.