Originally Posted by
TheBang
For IEMs, the biggest issue is that it's an internal sound feed meant for a specific band member only. The mix is not what you hear coming out of the PA; certain elements may be over or under emphasized depending on that band member's requirements. There may be internal production chatter. There may be a click track. In short, it's not something that's meant to be heard by the general public and is not a flattering representation of the performance.
ALDs, on the other hand, is there a stigma associated with those? Unlike IEMs, ALDs are intended to be heard by the audience. So, I'm not sure if there's a problem with recording and sharing those. I haven't heard many of them, but one I can recall was not very impressive quality.
Edit: I listened to a few ALDs on Dime, and they can sound pretty good, if a bit dry. I think a lot of it is dependent on the venue's transmission quality and your device's reception, so it can be a crap shoot.