This response is limited solely to the question of the comparison between the Esoteric X-01 and the stock DV-50, and has no relevance whatsoever to the modification to the DV-50 discussed--that sounds interesting, but I can't address it. The suggestion, however, that this modification will bring the DV-50 closer to the sound of the X-01 may or may not be true, but has to be seen in light of the fact that the DV-50 and X-01 are so different that they could be the products of different manufacturers. I have both sitting side by side in my system (the DV-50 for DVD-A mainly), and both have at least 4-500 hours on them. Put most simply, the X-01 is the most brutally honest source of any kind I have ever heard: a good SACD (the only medium I listen to on it; I use it as a transport for the dCS Purcell DSD and Elgar Plus in redbook) is simply stunning--well beyond the level of the DV-50 in SACD, or anything else I've heard. But on a poor or mediocre SACD (and there are plenty), the X-01 simply tells it like it is; and more than once I didn't want to hear it, gave up and threw the disc into the DV-50, which editorializes a bit--some extra warmth, less revealing. Interestingly, in DVD-A the DV-50 seems more "straight", less warm and cushy, than in CD or SACD. I've pretty much concluded that in digital, unlike analogue, you can't have it all. You pays your money and takes your choice; and then next year you do it all over again. (And yes, I have heard the EMMs and the whokle dCS stack.)