Yeah I'm sending some of the kick signal via one of the Aux outs back to another channel, so there's a bit of "gain stacking" going on, plus using the mid-sweep on the channel receiving the Aux signal. It's a great-sounding little mixer, sweet preamps and eq's.
Thanks again! Desk overdrive is just pushing the gain on a channel to the point the signal starts clipping/distorting. I'm sending some kick signal to a reverb unit, I think it was "room" setting, and tweaking the "room size" setting until it's kind of synced, coming in half-way between each kick.