I bought this as a cheaper step down from the Bose L1 Pro8. This has very good sound. Obviously it's better if standing right in front of the speaker but it does spread out to the rest of the room. It is a little heavy at 20Kg so I bought the "LD Systems Wheelboard f. Maui 11 G3" too which is a great help for transport (provided there are no kerbs to mount). It does require a mixer to operate but apart from that it provides a very professional look.
Regarding features, there really aren't any - it's just plug & play.
The sound is a little rich for my Yamaha acoustic so I'll have to play around with that for a bit. But for the amount of composite sound & speakers, it is well worth it.