Hi Audrey
To put it in simple terms,when the signal leaves the main outs of the kn7000, the keyboard doesn't care where it goes. The Z2200 handles and improves it very well.

Bernie
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pa4X 76 ,SX900, Audya 76,Yamaha S970 , vArranger, Hammond SK1, Ketron SD40, Centerpoint Space Station, Bose compact