Hitler had a very good timber to his speaking voice. Those that heard him speak said he was mesmerizing. He would practice hand gestures to use and the same with facial expressions. There are actual photographs of him practicing.
The masses loved to listen to him, especially as there were light shows, torchlight parades and other special atmospheric effects to go along with his speeches. He was the first rock concert star and played the crowds like a fiddle.
And when it comes to public speaking, the man had no equal.
Thank God.
He was charismatic. No doubt there.
Some of those crowds were massive.