A:AnswerNO!
These are NOT sufficient for professional, live, on-stage use. Come on, man.
Also, you won’t look very cool while you’re attempting to entertain your would-be admirers in the crowd. Just sayin’.
BROTHER BULLET
A:AnswerThese headphones are the best for the situation you described in your question. It isolates your voice exceptionally well. Im a person who talks at a low volume and am heard perfectly with the 700.
A:AnswerIt does not completely silence outside noise even at the 10 level. I believe NC700 is meant for listening to music while reducing outside noise as much as possible so as to enjoy the music. If you want complete silence with noise cancellation, I've owned the Sony WH-1000XM2 and I've compared the noise cancellation features; as I write this, the Sony WH-1000XM2 Black demonstrates the best in terms of noise cancellation -- almost complete silence. Of course, Sony has a newer model than mine as well. I'm only reviewing and comparing the models that I currently own.
A:AnswerThis hooks up with windows 10 extremely easy. It has a very good noise cancelling mic built-in. If you have an external mic you are going to use no matter what headphone you will use, there are other headphones that are cheaper with either the same or possibly better listening quality.
A:AnswerI wear mine for several hours without discomfort. I listen to music audio books and podcasts that last several hours. If I’m walking with them I do notice they feel hot and rub on my glass frames. I also have used Sony’s noise canceling headphones and they are not comfortable. The Bose headphones are more comfortable! Hope that helps.