Great sound, I love it! I only needed it a very good quality HDMI cable with ARC support, for some reason I had to try with two different HDMI cables, since it I was losing the sound after turning off the TV. After finding the right one, I had no problem at all. Although, I thing this was more a thing of my Samsung TV than the soundbar.
It includes a microphone that helps you to calibrate the sound for your room easily.
Also since I didn't see in the comments, I want to add for those who need it, that this is a 3.1.2.