We use a Presonus RM32ai Digital Mixer so there are 16 aux sends for monitors.If you do use IEMs, what is your setup like?
For me I run a feed from the mixer to a Behringer Xenyx 502 Mixer. It has basic High/Low adjustment which sometimes help cut out that annoying high pitch noodling from guitars. Additionally you can adjust the level coming into the mixer as well as an independent adjustment for volume out to the IEMs.
For the mixing portion, we use a Behringer XAir so we can control our own mix via an app on the phone. That feature alone has spoiled me more than I realized until I had to work with a sound guy that adjusted my mix for me.
And of course, the IEMs themselves, which currently are Shure SE535s and a backup pair of SE215s.
We all have iPads to control our own monitor mix which is beyond awesome!
I have the Future Sonics MG6 HX in-ears monitors.
Galaxy Audio AS1800 wireless unit.
I run my mix in stereo as the guitar, keys and bass all are run in stereo and the mix is out of this world!
Just like listening to a CD.