Hi robzohrab!
We try to film all of our video lessons with a consistent look and feel and sound. Recording these lessons takes a lot of time and a lot of technicality, too! Sometimes it just turns out that the audio levels may not be exact across all lessons, and this is especially true when we're working with over 11,000 lessons.
The newer lessons are for sure a little more consistent in terms of overall quality.
We appreciate your feedback and we definitely take it into consideration. We're always trying to make our videos better!
Best,
Billy
If you have any questions, comments, or concerns, please contact us.