For now my main portable headphone is HD25 1-ii, and my source is an iphone5 to AK10.
Do I need an extra portable amp to drive it's full potential out?
I am seriously considering to add The Shadow / Pico slim to my arsenal.
Does they have enough power for portable headphones like HD25 or Focal spirit pro(which is also in my watch list)?
which 1 is more suitable if I mostly listen to rock and alternative?