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A20 Aviation Headset with Bluetooth | Setting operation switches in your headset control module
bose-a20-aviation-headset
Bose A20 Aviation HeadsetSold from 2015 - 2025

A20 Aviation Headset with Bluetooth | Setting operation switches in your headset control module

To set the operation switches:

Remove the batteries (if installed) from the control module to access the operation switches. Then, use a small utensil (i.e. a small flat screwdriver) to adjust the switches.
SwitchUse
AUDIO
This setting configures the headset for use with mono or stereo intercoms.
  • Select MON (default setting) if your aircraft has a mono intercom so sound if heard in both ears
  • Select ST if your aircraft has a stereo intercom so different sound can be sent to both ears
AUTO OFF
This setting can power off your headset automatically after several minutes or inactivity.

Note: On battery power while disconnected from an intercom, the headset will auto-power off even if AUX audio is playing. Also, on a Bluetooth® phone call while disconnected from an intercom, the headset will auto-power off three to nine minutes after the call is ended.
  • Select ON (default setting) to have the headset automatically power off after three to nine minutes of inactivity
  • Select OFF to disable the headset from powering off until you press and hold the power button on
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A20 Aviation Headset with Bluetooth | Setting operation switches in your headset control module