The graphs and data posted a few months ago, over at SBAF, differs quite a bit from the OP. Is there that much difference in test outout, based off the actual measuring device, or is the difference all about how you use the machine?
That power noise, displayed in the OP, is non existent in the SBAF measurements-hence the recommendation to NOT use LPS. I won't post a link, as that's not cool to me, but I wonder why there is such a gap in measuring? Many of the reviews on this site have representative powerline noise (I am only talking about devices that have data on the same tested device), that are not present at stereophile, or SBAF. Is that just due to the newer AP being used by the amirm?
I owned one of these, and the gain structure is poor, you get very little control of the volume before it gets super loud. It's perfect for hifiman cans and other planars, though. Also there is a noticeable difference from SE vs. balanced in subjective sound quality. The power on/off button is cheap, and the tube socket clamp pretty hard, be careful with them, of you are tube rolling. I'd recommend socket savers.
It was a great deal when it was first released, but now nearing $800, I just don't see how you can justify it.