iPod/iPhone Audio Quality

The uncompressed ipod files sound as good as cd

1. Larger ipods generally sound better than the smaller ones.
2. If you want to play via a stereo, then use a cable that will bypass the volume control and give you a straight line out.
3. And yess, higher bit rates are better, uncompressed is certainly really nice.
Art

There's no simple answer to your question. It's like asking what's the audio quality of vinyl.

The iPod can store CD-quality audio files, as Tarsando said, or compressed files that trade off audio quality for convenience in degrees according to the amount of compression.

The limiting factors in the audio quality of the iPod itself are the quality of the amplifier and digital-to-analog converter inside the device. You can bypass the amplifier by using a line-out connection from the dock connector but bypassing the DAC is, at this point, an expensive proposition.