I've only had these speakers for 24 hours so this is an early impression. I plugged the soundbar into my TCL Roku TV using the provided optical cable, powered both soundbar and subwoofer, and it worked. Someone commented the volume on the Alto 7 could not be controlled if you used the optical cable, but I can assure you, you can. I paired with my phone and played music for hours today as well.
As for sound quality, let me qualify my comments. This is an inexpensive 2.1 soundbar with a subwoofer, not a $1k high end speaker. As such, this is a great deal and it sounds great. I have it on a 49" TV in a small room, not in my home theater. The bass is perfect for this size room.