As I saw in the videos, each output has its own level control. If you use the Out 1/2 and / or 3/4 as stereo pairs, it should be possible to pair them so that you only have 1 set of output controls for each pair (1 level, 2 gain indicators, 1 Ground lift, the possibly following EQ, etc.).
Setting the levels and EQ separately for each output is a little fiddly. You have to remember the values in order to set both identically.