It sounds more "clear" of the previous version, bass a little less strong but (Bose forces) still very present. Where it scores points over the previous versions is on mediums. The sound is crystalline in this range. This is the only complaint I can make it.
Level design, visually I like less than the previous version but we must recognize that it is much easier to remove dust. I still regret that the protection covers are optional (hence the star less) for this price.
A 3.5 jack on the rear jack lets you connect any source that does not have bluetooth.
It's a great speaker, Bose shows us his skills.
One idea might be to Bose: why not plan a smartphone application for setting via the Bluetooth settings of acute and severe the enclosure.