This is based on the fact that you need amps, sources and speakers who can create a deep and wide stage. Because most brands and products are 2 dimensional. Even with cables you can influence the stage depth and width negative.
S.A.P. measurements brings 3 dimensional sound also to a much higher level. There are many other things what is very important.
I have done a lot of research this year in diversity in the middle frequencies. Because this is the most important part to create emotion for us humans.
This makes a huge difference. I saw people cry when I let hem hear my improvements in this part.