Just swithched to ios8 & yosomite and I feel that the way it processes music has dramatically deteriated. Music really sounds thin and anemic no matter the genre. Older ios & operating systems--firmware?--played music bettter. Now that most of my music is in the cloud I do not use my ipod that often. Now I'm being forced to use my ipod. (i'm presently listening to my macbook and I am having the same issues. So I'm certain its the new sofware/firmware at fault. It is not the hardware.)
Any idea if Apple intends to address the sound quality issues in new updated firmware?