the Marantz will do auto status feedback.  the command to set the status layer feedback is at the bottom of the excel sheet that lists all the commands. (I didn't use the auto status feedback in the following widgets)

here are the widgets that I made for a recent Marantz project.  If anyone wants the files, let me know.

Volume Status

I prefer to use IR commands for volume control instead of RS232, the volume ramping feels more natural. The widget asks for a volume status when the volume button is released.

Sirius Channel Status

FM Channel Status


AM Channel Status


For some reason I could not get the Marantz receiver to respond to requests for Sirius channel info (song title, artist, etc) This wasnt a nevo problem though.