Regarding (1) You can certainly have different volumes on the Zones 2 and 3. You need to set them in the 'Other Settings' as Variable levels, but I think you have that looking at your post. I have done several times using RS-232 control, but am not near our G68 right now to remind myself how you set the volumes using remote/front panel. I guess that Function + Vol Up/Dn will change sone 2.

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