Does the headphone jack support digital audio output or not)?
Which is the provides the best sound quality the USB, Thunderbolt, digital socket or perhaps Mini DisplayPort from the Mac of the Mac? and how does that compare with the output of the iPhone/iPod/iPad?
Please note this is actually two questions in one. I both ask about the output of the Mac(Book)s and iOS devices, respectively. Current models.
[For my question not to sound too subjective, I ask about natural, neutral sound.]
More info: NwAvGuy: Headphone & Amp Impedance (Basically he argues less - near zero - impedance is better.)