AMX240 Audio Panel : Choosing an audio panel

As for display of station ID on the IFD540, we'll have that no matter what audio panel is installed.   As noted above, that is a database that is stored on the IFD540 so we can decode the station ID in the comm and nav datablocks with no other required input or interface.

(One side note that may have caused the confusion on that topic - On our R9 system, we also display the active frequency and it's decoded station ID on the R9 PFD display.  That one represents what agency you are speaking to if you press the external mic Push-To-Talk switch.  In that case, we need to know what channel the audio panel has selected as the active com.   We can do that with a number of audio panels, not just the Avidyne one.)

As for Paul's original post and questions, it is true that the button labels can not be rubbed off on that unit.  It is also true there is no dedicated DME button on that unit.    The Avidyne audio panel will have the same look and feel as the rest of the Avidyne stack so they will all look consistent (color schemes, material, button types and labeling, etc).  We believe it has a simpler interface than the competition (less modes, less buttons, cleaner layout, graphical representation of crew isolation, etc) and of course it is plug and play with the PS Engineering panels and therefore the Garmin.