I own the new headphones DT 900 X Pro and am looking for a suitable equalizer for HeSuVi now have the one for DT 990 Pro in use. Will HeSuVi be updated there. So now I plugged in my headphones in the back Controlled via HeSuVi 7.1 Of course, I connect the 2 headphones via the adapter Does the whole 7.1 via HeSuVi no longer work Now I have connected your headphones in the front Only runs the Stero which can not be set above 7.1 Now the question is what do I need so that whole so both headphones can...