I've noticed that when I'm listening to the radio that the sound changes once it detects the HD Radio signal. As soon as the LC switches to HD, the sound quality immediately is reduced and sounds muffled. I "solved" this issue by going into the settings and turning off HD Radio, which is a little frustrating. Just one of many issues I've had with the Media Player/Car Play. I have the Premium Package JBL Stereo in my LC.