go amp then since you already have the ipod. SQ wont be better with S9 regardless. it will sound very good (havent heard it although I know the cowon SQ.) but IMO the only reason to go the S9 would be the fact its so sexy hehe and a smaller package than ipod plus amp. are you set on the voyager though?? I mean I know it woks out cheaper for those in europe, is that your reason for wanting the voyager?? IMO there are better amps around in that price-range
and BTW the ipod is source, voyager not. sorry to be picky, but there is a lot of lingo around here to learn a source is specifically the device where the music is turned into waves, not where the audio leaves to go to your headphones or where you perceive the music is 'coming from' so has nothing to do with the amp. in the case of an ipod, the ipod is transport, dac and amp, so it is the source; but once you separate the amp and dap, the dap becomes the transport/source and the amp the amp LOL. now thats about as clear as mud.