I instantly understood where Loquah was coming from, and what he was trying to convey. It reminded me of when i jumped from mid range Grado 80i/225i headphones to the higher end Alessandro Ms-Pros, my initial impression was a bit underwhelming as they didn't really stand out, but after a few days and weeks that neutrality and refinement is what made me fall in love with them. I adore them now for that, and when i wrote a review of them i described them as very refined and smooth, but honest with nothing added, and nothing taken away. A few traits i noticed Loquah used to describe the Mainline, it was at that point i thought ahh crap it does sound perfect.
The only thing that did put me off was his comments about the S.E.X. amps greater sense of depth, its that sense of space and separation i love the most about it, and would miss that dearly.
The Mainline was always bit of an unknown for me but now Loquah has put a face on it and made it a known quantity i am confident i would love it, and i'm sure there will be many more that come away with the same conclusion. Though the S.E.X. amp will be a tough act to follow, especially now i have mine dialed in with a few quality caps, its just sublime.