Theoratically, optical (MB, MBP) will always be better than analog (stereo), however, dock connector, as I think, is somewhere in between, which, as in theory, will be better than analog but worse than pure optical.
可是這樣還要再買一個DAC....比較便宜的大概要$6500我暫時沒那麼多預算所以說MacBook的類比輸出比iPod的Line out差、光纖輸出比iPod的Line out好囉?我看我還是先通通不要買等到時候存好錢再直接買DAC好了...