It's quite simple. It's for people who have their music on their ipod and don't have a pc in their living room and/or know better than to use wifi. And it's silent.
Not sure if I get the point of the Wadia iPod dock
Surely you must already have the stored songs in iTunes. Why not just get a DAC that will allow you to do the same thing but with ALL of your music not just what you can fit on the iPod. Is this for people who just don't want to mix computers and their systems? I don't get it.