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Does the EII only respond from a single midi channel and then the corresponding note numbers from the incoming sequencers note on and note off? Or can it be setup in a multi channel multitimbral way? Such as a separate midi channel per voice and it's ranges?
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It should be possible. There's the "Supermode":
In this mode, you use the EII's sequencer tracks to set up a preset <-> midi channel assignment. (Hate to say it, but...) best have a look at the manual. I slightly recall that the procedure of setting up all this is desribed somewhere.
best,
Elm.