The Elan controller is capable of controlling the devices with the following functionality
Power on / off for Zone 1 and Zone 2.
Switching up to 14 sources.
Adjusting volume / Mute.
Adjusting audio settings for all supported Surround Mode Audio.
FM feedback and two-way feedback for Zone 1 and Zone 2.
The driver will also listen for any manual changes made to the receiver outside of Elan and report those to the driver.