And single driver BA's cant do that very well at all. That's my point.
Either they might get the upper frequencies pretty well (like an Ety) or they might get the lower frequencies...or they are all midrange focused. But I have yet to hear a single BA that does bass treble and mid well together. Like a UM1 or W1 or a Shure E3 is just midrange focused (even though one may think they hear some bass and treble in there somewhere.....LOL).
audeo pfe 132 is very good at the entire spectrum. if you ever get the chance give them a listen.