Kind of a bogus question. My music is different than yours so you can’t say music is only un-amplified. My music is all amplified and I have spent decades playing music in different bands, so I know what certain instruments should sound like.
99% of the concerts I attend are outside and quite a few of them you can hear the guitar thru the fender amp, others you hear everything from the PA system.
You bring up mics/pa systems, how about the room/hall/arena you hear the music in? That makes a huge contribution to the sound.
I would take a concert in a great amphitheater that is amplified instead of an orchestra concert in a concrete building that is not built for good audio