Si Impact 40-input Digital Mixing Console and 32-in/32-out USB Interface and iPad ConNow combine the 32 mix inputs on the Si Impact console plus all 32 USB inputs for 64 total channels to mix. Add one Soundcraft Mini Stagebox 32i or 16i to get up to 64 mic channels to mix. Or add a second MADI option card and two Mini Stagebox units for up to 96 microphone preamps, 128 total available inputs and 80 channels to mix. Add the Dante option card to get 64 Dante channels to mix. Never Been on a road Trip with the Mixer. A very God Mixer for a Church Setting Mixer is just like New without any cosmetic imperfection