Eddie,
I used a vocal processor with my Kn7000 for many years. The midi channel must be the same for both the keyboard and the vocal processor. I set my Kn 7000 to transmit on channel 5 -- The chords of my left hand triggered the vocal harmony. (Midi channel 5) Some used the right hand to send messages; I found that the keyboard was sending too many conflicting notes to the vocal processor, but it still was effective. The processor had many other options but I found the harmonies to be best using left hand triggering. The secret is to use the vocal processor sparingly, if not it will sound very artificial – they are not real voices.

I purchased a TC Helicon touch Live, it arrived today. I bought it from Guitar Center, $499.95 less a $100 coupon. I researched the unit for three months. I can easily work the unit on the fly and it is able to record and playback in a loop.

I will post more about the unit as I learn, John C.