I have Bose NC700, the button on the headphones switches between noise cancelling level 10/5/0. 10 is max and makes people nearly impossible to hear if you have any audio playing; 5 is a great balance between cancelling background noises but letting through voices and other sounds; 0 is full transparency mode and actually amplifies the sound a bit.
In any case, ANC is best at cancelling out constant background sound, and is less effective at short bursts of noise (crashing sound, another commenter mentioned crinkling candy wrappers, etc.). At home with level 10 I can't hear anyone knocking at the door, but construction noises still get through if you don't have any audio playing. Level 5 resolves the door issue but makes the construction worse :(
The voice feedback is a different feature which activates when the mic is active, so you can hear yourself. Not sure how that compares to what the 1000XM2 does.
In any case, ANC is best at cancelling out constant background sound, and is less effective at short bursts of noise (crashing sound, another commenter mentioned crinkling candy wrappers, etc.). At home with level 10 I can't hear anyone knocking at the door, but construction noises still get through if you don't have any audio playing. Level 5 resolves the door issue but makes the construction worse :(
The voice feedback is a different feature which activates when the mic is active, so you can hear yourself. Not sure how that compares to what the 1000XM2 does.