A: The only way to link up 2 or more compact mixers would be to use one of the mixers as a sub mixer and feed a submixed signal out to the other mixer as a stereo or mono signal. The compact mixers cannot be cascaded. The 1402-VLZ PRO main XLR outputs have a mic or line level switch. To run the main outs of the mixer into another mixer’s mic inputs engage this switch to mic level and use two balanced XLR mic cables to connect them. Make sure phantom power is OFF on the main mixer’s mic inputs.