I need your help with an amplification problem I have. I recently purchased a pair of Hifiman HE-400, which i really like a lot. But I can't shake the feeling that the feeling that my Fiio e10 amp just isn't allowing them to fulfill their true potential. May that be true? I've been looking at the Nuforce Icon HDP as an all-in-one-solution for which to run high-quality music through from my computer, how significant would the increase in sound quality be?