I plan to order an Hifiman HE-400 for use with an iPhone 4S and my macbook pro 2010, my question is do i really need to buy a DAC/AMP as this headphone is easy to drive ? Do the HE-400 really need an amp to give his best ?
Otherwise i would order the FiiO E17 for both portable and desktop use, is that a good choice ?
Thanks ! :)