R2R limits tube rolling, doesn’t it? Back when I picked up a used Atlantic to upgrade, I remember that NA Lampi Rob said he preferred the sound of the R2R over the TRP. So the question is not just about DSD, but also about the underlying sound and choosing if one wants the potential variability of sound or not via tube rolling. How can one tell without having them side by side, or perhaps having a comparative review or two from someone whose ears and terminology one trusts and understands? And then there’s resale value down the line: the whole point of the new version was, per the name, tube rolling. What a can of worms that’s been opened!