I was very impressed with the 2016 Lincoln MKZ today and was about to seriously consider purchasing it until I listened to the so-called Premium Audio System (not THX). It sounded awfull. No highs at all. I tried increasing the treble but there was no difference even after full boost (or full cut). I also tried increasing the mids with similar results. The bass control did work, however. I listen mostly to Sirius XM in my current car, a Lincoln Town Car with an aftermarket audio system and it sounds about as good as can be expected from satellite radio with plety of adjustable highs. Has anyone had experience with the Lincoln Premium System and if so, do you get any highs when using satellite radio. I didn't try CD's or MP3's. I also found the MyLincoln Touch not user friendly at all though if I had to, I could live with it but there is no way I can live with the sound.