Some effects processors allow you to create a variable wet/dry mix in the
processor, in which case that could be used on the insert. However, I actually prefer using an
aux send and returning that into a
channel or aux
return as it allows easily varying the wet/dry mix on the fly.
The Direct Out on the GB4 is not only pre-fader but apparently also pre-EQ and pre-mute, thus adjusting either the main
channel or effects
return channel level would vary the wet/dry mix, muting the main input
channel would not
mute the related effects and the effects
send would be the unequalized signal. Especially if the effects are reveb, delay,
etc. then I would tend to use a
post-fade aux so that not only is the
effects processor seeing the equalized signal but also so that the main
channel level does not affect the wet/dry mix and the main
channel mute also mutes the effects signal.