We’ve been using IEMs for a couple of years. It’s been interesting finding this thread, and reading other peoples’ experience.
I started using IEMs 10 to 15 years ago to protect my own hearing. It would have been about the same time as I started using ear plugs on trains and planes. At first I used Shure SE215s. The sound was reasonable, and I liked the cables. However the plugs kept working out of my ears, even with the cables running under my shirt, and the isolation was partial. So I know what it’s like with one plug in, and I know I prefer to have two. We run a mono FoH, so our IEM mixes are also mono. I’d like stereo for separation but we’re not playing on stadium tour budgets. We don’t run a quiet stage. I like my guitar to resonate a bit, so I have a Q12 at my feet, angled up like a monitor. It runs off Output1, so I can turn it up or down as needed from the front panel.
A couple of years ago we changed drummer, and his replacement was louder, so I treated myself to some fitted plugs with multiple drivers. I now use these instead of plugs when I’m doing noisy work, such mowing the lawn, or cutting logs.
Several people have commented about the sound of IEMs. It’s never going to be like a 4x12 cabinet, and I don’t want it to be. What I want is clarity. The guitar might sound thin, even with bass drivers, but I know from our videos what it sounds like out front. I know from playing at home what the nuances are. What I need is to know on stage is that I’m on time and in tune, and to get my cues from the other band members.