I'm only going to comment on one particular item, as there are several threads going on within this multi-tiered dialog.
I'm a bit concerned the LIO may not have enough peak power/current for the Dynaudios. Peaks in classical music (and also in movies) can be +20dB or even more. However, my current amplifier is 40wpc Class A SET and it does a fine job. In my experience SET amps do sound a lot louder than their SS counterparts due to the soft clipping of tubes and as such the 120w of the Devialet is comparable.
I purchased the LIO with tube stage, RVC, phonostage and MOSFET Amp and I'm running with DALI Epicon 8, 3 way 500wpc and i was worried too. (my CD is Esoteric X-01 and my vinyl gear is Rega P7, Exacta cartridge). Vinnie had to convince me to try the MOSFET. Here's what I hear. Around volume level 24 or 28, depending on what i'm listening to, it kicks in very nicely, low volume but really silky smooth. Around volume level 35 and up, the full range of music is there, 38 to 42 seems right for my very large living room (about 22' deep by 40' wide), highs very crisp, (you need to hear Annie Lennox's new album, Nastolgia, through this system, brings tears to your eyes, no kidding), mid range like I've never heard coming out of these speakers before, and bass, tight and very clear. I just swapped out for another set of Mullards, (sorry Vinnie had to try something else just cause), which brought the bass more forward which I like. Before the LIO, I had Vinnie's Isabella & 70.2's, (loyal customer I guess). The only gripe I have is that with the Isabella & 70.2's, I can boost the volume with the gain switch up and cause ear splitting levels. When I peak at 63 with the MOSFET, it gets pretty darn loud, not as loud as the LFP-V's, but really loud to the point that any sane person just wouldn't go there... and to my surprise I can't hear any clipping, not to say it's not there just that I can't hear any, no clicks or pops or stutters, nothing but music to my ear (sorry for the cliche).
Anyway, my wife complains anything over volume 30, so rarely do I get to crank it up, and only if I decide to listen to Tom Petty or Joe Strummer. In most cases though I'm listening to Wayne Shorter, Keith Jarrett or Alfred Brendel's Beethoven Piano & Cello sonatas for example. I guess the older I get, the more I refine and expand my musical tastes.
Bottom line, this amp must be so efficient maybe due to the ultra caps that you really don't need more power. However, saying that, even if I don't 'need' more power, I guess I just 'want' more. I'm still waiting for the separate 200wpc amp soon to be released (right Vinnie?). That way I can pump the internal to a pair of really nice Vienna Acoustic bookshelf speakers I have and the soon to be released beast to the Dali's. Why Not? Actually, Vinnie, can I do that?