albireo

I'm starting to have a strange problem with my '06 Shaker 1000 unit. While listening to the radio (strong signals in the middle of the Capital of California) I notice that the high sounds get chopped off all of a sudden and then won't come back unless I change to another station and then come back (then they will disappear again). It's like I went to the treble controls and turned the highs down 30%. The problem is that I'm thinking if I take it to the dealership they are going to sit in my car and say "I can't hear any difference..."
Anyone have this problem??


Joe