My r56 seems to get quiter the faster I go.. at standstill I can't have the volume up full as it's unbearably loud... yet when driving it's intensely quiet I can have it up full and still hold a conversation at normal volume... My girlfriend s phone seemed a bit louder but not much. Didn't seem to have changed since the channel swap so not related.. its wierd. Might just be my android, or spotify?