It's true: however, my subs are different from each other. I would therefore necessarily have to go with 2.1. Unfortunately I have to argue with myself: I have learned to love very basic systems. But above all for 40 years, I have always used the sub only for HT. Where I come from, it seems strange to say, it is not used in 2-channel audio, or rather, it has always been considered for HT and therefore I grew up a bit with that philosophy. In recent years perhaps it is starting to be appreciated. I've been hearing about it so much since reading ASR. So I started to take the first steps: but as with everything, first you need to understand something in order to appreciate the differences or benefits...