This system certainly does what it says on the tin. I'm not a particularly technical person and an old duffer too but I eventually managed to find my way around the somewhat unstructured manual.
Another reviewer mentioned that you cannot alter the tone and I suppose that is true in the sense that there is no specific control of the tone. However,if you manually play around with the volume from the speakers (as opposed to the auto calibration which is easy but gives you what Sony thinks is best)you can alter the tonal quality. By increasing or decreasing the volume of the sub-woofer compared to the others, you will almost certainly get the tonal quality you want but the manual does not explain that at all.
I'm giving it only 4 stars because, like so many gadgets nowdays, it is just too clever by half. Sony (and the rest)need to recognise that not everyone is technically literate and that many of us just want a simple system that gives good quality sound and picture so that we can enjoy the films/TV or music rather than spend time fiddling with the system itself.
But it's good nonetheless. Well done Sony but try to make some of your products less complex.