I don't know anything about your amp, but adjusting your mids will have a big effect on the overall "chorus" sound. Try setting your bass and trebal to your liking and then play with the mids. As for settings for your chorus, if you want an almost flanger like sound set the rate/speed pretty slow and the depth all the way up. For a more "3D" chorus sound try setting the rate and depth around 1 o'clock. Those are just some general settings and doesn't necesarily mean they will sound good with your setup because all gear varies a bit. Hope that helps some.