Well ... just wanted to state that there are alternatives out there with tubes and the ODAC by itself is not the endgame (not saying it's bad at all - just that there's always room for noticeable improvement). I'm not familiar with iUSB, but iFi is extremely expensive for what it does, IMHO.
As for the rest, I can't shill as a MOT - just try to state impartial facts.
I understand what you mean. Will research more Dac's and amp's and also have to sell my denon d5000 before, thanks for the help tomb