Hello Girl,
Toril, when I was in London and I could hear the SX900, I felt the same thing, it sounded the same as the sound of my s975, but I can guarantee that the SX sounds much better, both on the speakers and on its internal speakers. It is true that you need to edit the Master equalization, otherwise it will not look good.
When I turned on the SX on my speakers, I almost returned to the store for the disappointment, but when I started the equalization process I was glad. My musician friends who visited me noticed the fine change in every way.
Of course, for Genos, it's not much of an advantage, but in relation to the T5 and s975, I think it's a good exchange.
Enildo