Meet the Zoom LiveTrak L-20R mixer: a rack-mountable digital mixer and recorder with iOS control that lets musicians control their mix on their iPad. It comes with 20 discrete channels with XLR / 1-4″ connectivity. The Zoom LiveTrak L-20R supports simultaneous 22-track recording. You can record 24bit/96kHz audio to a SD card.
This mixer has 20 built-in chorus, delay, and reverb effects. It lets you save up to 9 scenes. The L-20R works with the Remote Mixer app.