Sooooo here's a weird one. Just replace my avic 130 with a 150. Go to listen to my 80gb ipod classic and problem. Sounds that where normally just back ground sounds are loud. Vocal and the such are heavily muted. Weird? So i think my old ipod is gone. Wait just a sec. Try it in a friends care with a850 and it works fine. Bad cable? Tried his cable on my one 150. Still sound like crap. Try his 4th gen touch in my car with both cables. Guess what? Sounds fine. hmmmm. Is the 150 not compatible with classic? Cant call pioneer. They have bankers' hours. Any guesses?

My 160 gig iPod Classic works fine with the 150. Maybe try resetting the iPod then resync with iTunes?

Is your iPod brand new or about 5 yrs old. If its new you might have answered my problem.

Is your iPod brand new or about 5 yrs old. If its new you might have answered my problem.

Brand new? No. I've had it for about a year.

What I have noticed...this is the second Pioneer head unit that I've owned...is that the iPod will occasionally lock up, and that only a reset will clear it.