Rack up the mixer and throw away the faders.
Mackie DL32R is a powerful 32-channel mixer, rackmountable thanks to the super-compact 19", 3U chassis - where you'll find all the physical I/O (32 microphone inputs, 14 XLR outputs).
All control is done via your iPad (not included).
From mic pre gain all the way through to control over your multi-track recording and playback, Mackie DL32R gives you complete, roaming control over your 32-channel mix. Musicians on stage can use their own iOS device to control a monitor mix, or hand over monitor control to the expert sitting side of stage (on their own iPad).
The Master Fader control app is intuitive, and gives you fast navigation, quick setup with both factory and user presets, along with the ability to limit access to certain users, preventing unwanted changes in the middle of a performance.