Hi Johnny, what brand/model is your mic? Is it a dynamic or condenser mic? Condenser mics require phantom power for suffiencient OUTPUT. Unfortunately the mic inputs on the KN7000 (and my Tyros as well) doesn't supply PHANTOM power. In addition, even some dynamic mics produce more/less signal output than others, which might be a reason you're not getting any/sufficient signal output into your KN7000.

Scott