In Single mode, seven effects can be used simultaneously, in series, so all tones in a patch go through the same effects. In Multi mode, three effects can be used at the same time, with all patches sharing the same effects, though any of the patches can be routed to bypass the effects.
In Single mode, seven effects are available for use at once, applied in sequence so that all tones within a patch go through the same effects. In Multi mode, three effects can be used simultaneously, with all patches sharing the same effects, but individual patches can be routed to bypass these effects.