You, good sir, are wonderful and beyond enlightening. I appreciate the math and explanation! With this information I am pretty sure I will be going with the e10k after I get my classes for next semester paid for. Stupid engineering fees on top of college prices suck...    Once again thank you...

Soooooo... I looked all over and I'm getting various opinions which make me more and more confused.   The amps/dacs I am looking to buy to help power the dt990 250 ohm pro's is the fiio e10k. I currently have a xonar dg sound card in my pc that I don't mind bypassing because I don't use the...