That's one of the reasons why I love my good old Bose QC 15 headphones: they have a physical switch that turns off the noise cancelling and also acts as a relia

That's one of the reasons why I love my good old Bose QC 15 headphones: they have a physical switch that turns off the noise cancelling and also acts as a reliable no-delay audio kill switch. Some people would complain that you can't turn off the NC and keep listening to music, but I think the switch is actually more useful this way...