Great tips from Joris above. I'm using an ES-9 myself (kinda like a big ES-8) to send all my channels separately to my iPad. I guess you can do the same on a PC/mac. Put each in a channel strip, then add any EQ or sidechain compression you like. I worked with a basic Ladik mixer and Befaco out before, but when I finally switched to AUM (audio mixer on iPad), it was a revelation. The ES-9 also has outs, so I send the mix back from iPad to the ES-9 where I can send it out to speakers or headphone. Having every channel in a channel strip setup also allows me to add a few effects when I run out of effect modules