Nah... I don't want to bother. You sound like an total amateur without much experience in evaluating amps or planar magnetic headphones. The Fiio E09K sounds AMAZING with the HE-500 and SHINES like the sun if you haven't heard a better amp too. Doesn't mean the E09K is driving them to full potential or anywhere near it.
As for the Interconntect. I don't want to piss you off but read the Emotiva thread.