Bacch uses microphones in your ears to measure the room and your ears to get the best sound. I didn’t know about this.
You’re the only one here who doesn’t seem to get this extremely simple concept. Seriously, have you done any research on this system at all??? Or do you need a YouTube video to spoon feed you and show you how to do everything? At this point in the thread that you don’t know this system is calibrated once by using in-ear microphones is just inexplicable and utterly embarrassing for you. You keep trying to push this agenda that this is hard to set up when several people here who’ve actually bought and use it say it’s not bad at all. Yet you keep pushing this completely false narrative and seem completely incapable of absorbing any of the very pertinent information being shared with you by experienced users. There’s a problem here.