I have recently purchased the Prestige Version of the GV80 with the much touted 21 speaker Premium Audio System and so far I have been utterly underwhelmed and wonder if there is something wrong? Everything I read is heaping praise on this Audio System and my experience is nothing of the sort. I have owned plenty of really nice audio systems including my last vehicle a Lincoln Nautilus with the Revel Ultima System which was one the nicest I have ever owned. I use the same audio files on my USB drive which are high quality recordings. The system is dull, lifeless, muddled, narrow sound stage in all three modes, and I have to turn the treble to 10 to get any kind of crispness whatsoever. I do see all the speakers in the system, but could something else be amiss? Amplifier problems? Speaker issues? This can't be right can it? I did buy this from a dealer brand new from out of state as there were none of the Prestige models to be had anywhere near me. I love the car otherwise, but this is such a let down as quality Audio is and has always been high on my list for any vehicle I have owned. Any thoughts.