Acton III Bluetooth SpeakerWhy It Made The List The largest in our Marshall lineup, the Acton III is a serious home speaker, made with solid, premium components and robust build specs. This updated version features redesigned surround sound, resulting in a larger, more immersive acoustic footprint. It connects quickly with Bluetooth and OTA (Over the Air) functionality delivers next gen software features as soon as they're released. The iconic brass Marshall control panel lets