maybe I'm oversimplifying but why can't you just use a cable from the headphones out jack into an input on your amp or PC.

There's someone in Ken's hair??

The USB port is for charging, not audio input.

The dock is for the audio. You need the line out to have proper sound out of the iPod.

Not necessarily. It works fine from the headphone port.

Have you tried? Because here, it sounds awful from the headphone port. The output ossilates too much and loses precision.

Certainly have, and had no problems whatsoever. In fact, with modern (5G and later) iPods, the line out is essentially a headphone port.

Jason, thanks. I'll have to look for one.

I ran the Sansa off battery and it sounds just fine when I connect it to the amp via its headphone jack. So Eric, I am not sure why you are having a problem?

The problem is not that it does not work. It's just a bit imprecise. With the same MP3 files, if I play them out of a MP3 compatible diskman out of its line out, the sound it very crisp. Out of the headphone jack, I get the same "almost good" effect. Out of the computer (still same MP3 files), no problem whatsover.

Anyone knows what is the impedence of the line in of the Audiobytes' amp?

This calls for a double blind test!