This is why, as a pro audio guy, with many years of pro experience mixing IEM monitors for bands, local, regional, and national, I just can't participate in these discussions about IEMs anymore.Don't mean to sound condescending, but yes for a music connoisseur there is a difference. (for not sounding condescending, you've done a sorry job of not doing so)
Ever stand in the same room with a Marshall half stack? There is a force and energy way beyond just sound. The way the cabinet shakes, the speakers distort, the ground vibrates and the tone fills the room is pretty magical. It evokes excitement. The late great Allen Holdsworth used to say "you have to move air, man!" We shared the same distain for amp emulations. Kempers, fractals and the like through a full range PA speaker are not the same experience.
Stand in front of a stage with real amps and drums and there is a much higher level of excitement than just "good coverage". You get to interact with the band and feel their power and emotion. If the guitar is too loud, move to the center or the other side of the stage. It is a true stereo experience. Of course this only pertains to smaller venues, not 10,000 seat rooms. And also requires a good soundperson that can mix the vocals above stage volume. I see more and more IEM bands that "DIY" it and control sound from the stage (as in my experience seeing the Metallica trib band)
Ever stand in front of an acoustic jazz quartet? The imaging is magic. Close your eyes and you can place the piano on one side, acoustic bass on the other and hear the intricacies of the cymbals and toms. Way better than a mono one dimensional mix through PA speakers. Also the interaction of the musicians actually listening to each other on stage and implementing dynamics...what a concept.
Ever hear a good tenor sax player in a room? way better than the nasally honk you usually hear through a mic and PA.
Ever sit in front of a big band or an orchestra? of course soloists can benefit from a boost through the house PA but... man, the excitement and way beyond stereo imaging of the sound bouncing in, around and off all the different surfaces and reaching your ears from a million different angles is again, magic!
As far as a backline look. It's entertainment, esthetics are part of the show. Like tats, clothes, hair, cool looking basses... A heavy band with 1 8" rumble combo amp behind them isn't going add to the look they are going for.
When someone asks me about their band looking into using IEMs, there's usually one guy with an overview such as this of "How things should be". And he/she is right, everyone else is wrong, and anyone that disagrees is an idiot. And I've had enough of that crap for one lifetime.
I don't even care anymore. When I get that inquiry, I refer them to someone else in town. I haven't joined a new band in a few years, but I bring in my IEMs and I pretty much dodge questions about them unless I see a genuine desire to go IEM and willingness to put in the work and investment.
God Bless guys like @s0c9 and @Mike Caldwell among a few. others for pitching and offering help and dealing with the insipid arguments (How the hell did orchestras get into this discussion?? Yes, I've mixed symphony shows where the featured artist and rhythm section used IEMs and very successfully. I know what I'm doing. Had nothing to do with the initial discussion).
I'm so over it
Good luck to whomever does whatever with the matter.



