The point I was making was when the Era 300 is used as a rear, i.e. as a surround speaker, e.g. together with an ARC and a sub. In this configuration, only Atmos content is controlled by all six drivers; for all other sources, only the drivers on the outside of the speakers are controlled. Not everyone will like this, hence the note. With Atmos, of course, they sound very good, so if you only listen to this kind of content, you won't go wrong with the Era 300.

I use it as a main speaker, without any special arrangements, and the performance is good