Uncle Dave,

Thanks for the reply. Since I have no experience with keyboards, I am going to ask a question that is probably dumb.

With electric guitar, I connect the guitar to input port in processor and then the output of processor goes to the input of amp. So it is guitar -> processor -> amp.

With keybaord, should I use the same order but keyboard instead of guitar? Can I still use the keyboard speakers or I should use the amp?

Also keyboard has a specific connection for pedal. If I want to use processor pedal as a sustain pedal, should I use the pedal, input or output connection?

Also I think the guitar processor and amp should have some kind of output signal too, that activates the pickups in guitar. Doesn't this kind of feedback signal, damage the keyboard?

Thanks.