However, the Bluetooth connection from tablet to A20 I get by using the new A20 Bluetooh controller is more stable and does away with one cable. The latter is a major advantage in the cockpit environment and on its own justified, for me, the expense of the new A20 controller.

I've discovered my pre 2015 Bose A20's will not stream audio from SkyDemon on my ipad Pro.

A quick Google soon highlighted the problem as the absence of A2DP Bluetooth protocol in the earlier headsets. They work fine with the phone, making and receiving calls but are no good for streaming music or audio from other devices.

The answer ? Throw money at it (£240) and Bose will supply an updated control, mic and cable, very easy to fit, just two screws and it now works fine.

With the aeroplane confined to the hangar, the apron like a bog, I am happily using SkyDemon in simulator mode on my ipad, getting used to it's awesome potential but importantly, receiving alarms and alerts through the A20's.