so any hip-hop heads out there can probably attest to the, um, lacking audio quality in the "upgraded" stereo system. in particular, there are certain bass frequencies that produce a "pphthhh" sound from the front speakers that sounds very much like a paper-cone speaker that has blown out. mentioned this to the Service team as my car's pano-roof creak was being fixed. they could not replicate. so I broke out a specific track that it happens pretty bad in (the end of Kanye West's "I Wonder") and the tech immediately said "yea, that's not good". so, to see if it was "normal" or not, we took my iPhone to a brand new Model S with Studio Sound that hadn't even been unwrapped yet. paired the phone, played the track, EXACT same crappy, terrible, horrible bass response. my Speak 'n Spell from 1983 had richer bass. i don't mind the fact that Tesla cut corners in some places to afford it in other places, but in no way should the "studio sound" be a $950 option. it should be the standard sound that comes with the car. And then they should have contracted with Mark Levinson or someone to offer a cray-cray system for a few thousand or something. /rant.