Amazing sound and surround feel that captivates. It works incredibly well in a large living room, even without a woofer. I had no issues with connectivity via wifi and bluetooth, it worked perfectly right away.
I take away the 5th star because Harman Kardon no longer offers the surround speakers (which I am looking for and cannot find anywhere).

Very good machine. Powerful and with clear sound.
One downside is that it is fabric and collects lint, and the other is that the remote control does not have many adjustment options. Overall, it is awesome.

For the 550€ it costs now, it is really value for money and without even buying a subwoofer that connects to it, very good build quality (compared to a Samsung q700c I had which was not so good but even better than previous Sony ones) generally excellent atmos and surround sound and very good sound even in music which in other ones I had it wasn't possible in both, I imagine that with the purchase of the subwoofer it will go to another level but still recommended by me!

For technical details, I cannot speak because I do not know. What I can say is that it delivers amazing sound quality and enhances the experience. The easy connectivity with mobile, Chromecast, Spotify, and television is a plus. Also, the luxury it exudes as a device. One of my best purchases.

Without having any other soundbar as a comparison since it is my first one, I was impressed by its exceptional Atmos feature, aside from its basic functions. In a reference movie (Top Gun), you can truly feel the height in the sound during the aerial battles, etc. Overall, very satisfied.