Rick,

Fire the output from the Roland into the Yamaha 3000's auxiliary input, then fire the output of the 3000 into the Z-2300 and you'll be ready to go and don't need a mixer at all.

Cheers,

Gary

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Travlin' Easy
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)