Curious what people think re this. I bought a Sony car stereo with both Bluetooth and auxiliary input jack so I could play music from my Motorola Droid thru my car speakers. I was disappointed by the bluetooth audio, but what surprised me was that the music coming thru the auxiliary jack was only slightly better. Music playing through the auxiliary cable sounds a bit compressed - not exactly fuzzy, but without the nice clarity, resonant bass, and high treble I'm used to. The speakers on the car are good. My old car stereo playing CD's sounded much better. I went back to Best Buy and they tell me that the sound quality out the auxiliary jack will never be very good. The sales guy says a lot of quality is lost going through an auxiliary cable - unlike an iPhone (he tells me), where full multichannel sound comes thru the USB port. That sounds a bit fishy to me. I get fine sound from the Droid thru my headphones and good sound if I hook it up to powered computer speakers and play thru them. So: should I insist they allow me to trade in the Sony receiver for a Pioneer or Kenwood or something? Or are they right that no matter what receiver I buy, the sound through the auxiliary cable will be compressed and tinny?