Ok miss scarypants or what ever you call yourself, YOU may well be able to hear a difference with your LCD choker cable and "high end" resolving gear. But I am speaking for the majority of 650 owners who have budget to mid equipment. Equipment that matches. If you knew anything about the 650's which you clearly don't then you would know that they where designed to be mp3 friendly. That means that they were designed to smooth over low bit recordings. So, lets just forget about your higher than all the rest of us set up for the moment and consider us mere mortals listening with our paupers set ups: we can spend all day converting our mp3's to flac- but for what you will get in return... it will be a waste of time.
I wouldn't consider the MF V Dac and MF Xcan 3 nasty equipment.
That's just your opinion. One I also disagree with.