I couldn't find an easy way to post feedback, the only place I saw was closed and not accepting new posts. 

Anyways, I wanted to suggest that the current videos (which are great) get re-uploaded with enhanced audio volume. I find I have to blast my system audio (with an amplifier I might add), on a desktop PC to the point where I hear a lot of buzzing in my speakers/headphones in order to hear the instructor.

There is obviously a lot of IT and AV solutions on my end I can do, but when I'm at the point all other audio sources are blasting extremely loud without me turning them way down, it's a problem on Khan's end.

If K.A does this, I believe it will help a lot of struggling learners who have to study in less than ideal circumstances, such as noisy environments, or if they are special needs, autistic, hard of hearing, or just have cheap speakers/headphones. It would definitely help me study better in a shared room, and to not have the annoying speaker buzz I haven't been able to completely eliminate.

By comparison, with the Khan Academy videos at max volume which produces a comfortable listening experience, if I turn on any other audio source, I'm going to recreate the scene in Back To The Future where Marty blasts himself across a room with that speaker that's as tall as he is.