I had my own experience of the importance of pairing a PC with the equipment best suited to its capabilities. I purchased an Iron Lung Jellyfish to try it on my DAC instead of the Volex 17604. When I had replaced the stock PC with the Volex, all Sennheiser "veil" evaporated (I'm using the HD580 in this rig). When I tried the ILJ in this rig, once the sound had settled, the "veil" was back. So, back to the Volex in this rig.
My work rig, though, ends in ER4S phones, and I thought that a little veil in the high end of this rig might be an improvement. So, at work, I replaced the Volex 17604 powering my computer with the ILJ and - long story short - my work rig has never sounded SO movingly beautiful - with NO loss of the detail or high end beauty that I love, just a toning down of some brightness in its high end that, to my ears, can be fatiguing at times. And, relative to the Volex in this rig, with the ILJ I HEAR the bass more and FEEL it less - which, with the ER4S, is an improvement to my ears.
So, I heard first-hand what Markl had noted in his preliminary review notes, the importance of good synergistic match-making between a PC and the component/rig with which it is paired. In my home rig, ending in HD580, the Volex is clearly my favorite of these two PC's. In my work rig, ending in ER4S, the Iron Lung Jellyfish is my clear keeper.
So, now, I'm counting my pennies, plotting to see when I can spring for a Violet PC.
Thanks so much, Markl, for all of yourself and your multiple talents that are behind this cornucopia of PC information. This has GOT to be my favorite thread in a great while.