while I understand that similar questions might have been asked before, I need help with my specific situation. Right now I'm running my cable-modded HD-25-1 II's directly from my computer (built in Realtek HD Audio). As this is my work computer I cannot install a soundcard but I still would like to upgrade my system. The hiss for one is a turn off.
What should I invest in? What amp/dac combination would work well with this setup? Something external, preferably USB would be perfect. FiiO E9? Something portable??