Oh is that those nob things I never knew they turned I just assumed they were decorative. I have never used them. Using them is sort of like taking a Picasso and adding your own stuff to the painting. Why change what an artists believes the sound should be like?? How many of you REALLY listen to music as opposed to background sound. By that I mean sit there and listen to the music and not read or talk and appreciate the art. My example of Picasso. Do you go to a museum and read a book or appreciate the art. Or even a more simple example do you take a book to a movie and read or watch and enjoy???