Why are there no botique car audio recievers?


I don't want to pay for a screen or cd player, just a decent sounding preamp with an aux in. Does such a thing exist?
pjrey
I believe that Naim supplies Rolls Royce and/or Bentley and both Lexicon and B&O OEM for a few brands like Hyundai and Audi. I'm not sure if any of this stuff is available in the aftermarket, tho.
Not enough cash in it I guess. Maybe more will pop up in the advanced audio sector in larger cities. Not exactly sure!