Hi all, I use a Bose A20 headset with Bluetooth for audio alerts from Sky Demon and Sky Echo 2. Unfortunately as the battery in the A20 starts to run down the BT shuts down without any warning and audio alerts are then lost. When all seems to have gone quiet, I've taken to clicking on setup and Nav options then voice etc to check it's still working but this is a fiddly process to say the least whilst in flight. Is there a simple way to test the audio output without going through the setup menu? if not could a simple screen button be created to do that at any time?