There are different settings for the radio besides the bass and treble. I forget how to get to them, but it involves pressing one of the keys down for 5 seconds or so. I think it is a "mode" setting. I played with it and the bass went away no matter what I did to the EQ. I then had to fiddle with that same "mode" function to get the bass back. I suggest trying to read the manual you can download from this forum and try this mode thing. This head unit radio is a detuned version of something else, which kind of sucks. If only the hole was big enough for a MyGig...