Why bother?
The music on your ipod is most likely in mp3 format. A dac can't help with what signal is not there.
You will have to consider storing music in a lossless or uncompressed format first on the ipod and then worry about an external dac. The software even warns you before saving to the ipod that the format can not be changed back once converted. That's because it is cutting out certain "stuff". However, how much can fit on a 40-60 gig ipod anyway?
The music on your ipod is most likely in mp3 format. A dac can't help with what signal is not there.
You will have to consider storing music in a lossless or uncompressed format first on the ipod and then worry about an external dac. The software even warns you before saving to the ipod that the format can not be changed back once converted. That's because it is cutting out certain "stuff". However, how much can fit on a 40-60 gig ipod anyway?