I have read recently that certain generation iPods have an audio line-out cable/adapter that will bypass the headphone amp for significantly increased audio quality when used with a hifi audio system. I am looking to pick up a pair of studio monitors.
My question is does this line-out vs headphone-out really make that big of a difference and why? Also need to know which iPod models and generations support this. Currently have a 2nd generation nano, which I am guessing does not have this ability.
I would also like to know if there have been any other advances between iPod models and generations that would significantly improve quality of sound. Thanks for your input.