Ok so I'm going to upgrade my current system. Basically I swap back and forth from my hd 650's to my ultrasone pro 900's. My setup with these headphones are my computer -> schiit bifrost -> schiit asgard. I'm making my way up the summit. I'm going to order a pair of hd 800's tomorrow and Im willing to put another $1000 dollars into my system on top of that to really make them shine. What should I replace? I was kind of thinking of a schiit lyr and a ps audio power box. Thanks for any suggestions.