Elk

Yes my source is CD (Not MP3). Thats an interesting finding. I use CD so it sounds like I'm stuck with crummy sound unless I can bypass the internal DAC, hopefully with an external which would have its own preamps. I also though that if an external DAC did work I could put the DAC in the trunk with the amps and then would only need 2 foot long interconnects as opposed to 20 foot runs. That should help on quality too. Does anyone have this thing playing FLAC files?

Well stated Mike. I actually run all my EQ settings flat on my decks. Any EQing happens outside of the box. This should make the unit even less of a factor in SQ but like you said "the 90bt sounds like shit!". Amen! I am planning a trip to my audio dealers shop with a DAC to test the port on their demo unit. I am also taking a fairly high end headphone setup (WooAudio 6 w/Sennheiser HD650) to plug into each of their display units preamp outs and see how they stack up quality wise. It may turn out that I need to just do a seperate deck and GPS unit which is apparently what I should have don

I previously had what I thought was a low end Premier unit which I replaced with the AVIC-F90BT. My vehicle was setup primarily for sound quality utilizing Focal components front and rear on amps delivering 200 watts per channel and a JL Audio 13W7 running at 1000 watts at 3 ohms. (not a light weight system) It sounded very good until I put the F90BT in there. Suddenly the bass got muddy and the mids all run together. The detail and accuracy are gone from the system. There is nothing musical about it at all. I went back to the audio shop I use and one of the guys there just installed one of th