I agree, for all the flaws this years edition, the sound is a nice improvement!
Also the music, hands down, is by far the best yet, I sometimes wait before starting a session in the menu because I enjoy the dynamics of the music.
As you and other have noted, the drs bleep needs boosting.
But also the awesome (finally!) turbo whine, please increase the volume a few db, it really sets at sense of speed. Or at least a seperate option in the Audio settings like "low" "medium" & "high" , or a slider from 0-10 like the other effects.
I was crossing my fingers before release t