Marshall has revealed two new portable Bluetooth speakers, Willen and Emberton II. The latest gadgets are compatible with Stack Mode, which allows you to connect multiple speakers for amplified sound, and you can control the devices via an app. Willen is the smaller of the two gadgets, while Emberton II has True Stereophonic sound.
https://www.notebookcheck.net/Marshall-unveils-Willen-and-Emberton-II-speakers-with-Stack-Mode-feature.617447.0.html