It all stems a bit from synth programming. Where many modulation sources are feeding destinations. It is in the modulation part of a synth patch that amazing amounts of detail and subtlety can be implemented.
That EQ is well above normal for offering those sorts of options. Even with 4 modulators it seems a lot can be done. What I find interesting is the fact an ADSR envelope can be triggered via midi and if you think about the possibilities in terms of sending that modulation source to a number of destinations within that EQ, then some pretty interesting and cool effects would be possible. Especially if you did things like make the EQ ADSR envelope match in a way the envelopes that might be within a synth patch that is also triggering that EQ modulation effect.
The LFO options could be used to add very smooth and subtle liquid movement to a sound or patch etc..(not WAH sorry!) Think comb filtering for example and having sweeping or moving nulls. Or two filters setup one on each side of a stereo image and you are modulating each side differently too. Perhaps in sync but different. That fact the modulators can be synced to the project tempo is also cool.
You don't have to use any of the modulation sources of course but the fact they are there to me makes that EQ quite attractive. Thanks
Mike for bringing it up in fact. It is powerful.