TSO'd has to do with two things:
1. Testing, testing, testing, at minimum temperatures, and maximum temperations, vibration levels, etc. If the unit makes it through the testing, it gets a TSO.
2. Insurace liability for the manufacturer, and higher levels of accountability. Translated, a higher price to the end consumer, you.
So you decide if a headset is something that should be tested, tested, and further tested, and whether that extra measure of testing is worth the extra cost.
1. Testing, testing, testing, at minimum temperatures, and maximum temperations, vibration levels, etc. If the unit makes it through the testing, it gets a TSO.
2. Insurace liability for the manufacturer, and higher levels of accountability. Translated, a higher price to the end consumer, you.
So you decide if a headset is something that should be tested, tested, and further tested, and whether that extra measure of testing is worth the extra cost.