In order to set specific volume levels for inputs on the EDGE A you will need to manually select the desired input and volume level, then press and hold a function button (1, 2, 3 or 4) on the remote control until you see the source LED blink.
Selecting the previously chosen button (1, 2, 3 or 4) will recall your chosen source and volume level.
The EDGE A will then remember your chosen volume levels the next time a specific source is selected.