The Stockwell III is Marshall’s next product with a replaceable battery. | Image: Marshall Marshall has announced a new version of its stylish Stockwell Bluetooth speaker, putting a new focus on repairability. The Stockwell III, the brand's first update to this model since early 2019, features a similar design to its predecessor with a large carrying handle and speakers that pump sound in all directions, not just out the front like the iconic Marshall amps that inspired it. It will be availab