Hi John,
Thanks for your interest and I wish that were an easy question to answer. AC has a reputation for peer pressure (?), so I don't care to make a dunce of myself here.
First hurdle is my 'reference' amplifier for the past decade, the Gryphon TABU Century, especially purchased for their PS1 phono prepre. They just happened to throw in, imo, a darned good amp to boot! It bears to the 'warm' side but gets so many things right so, well, let the 'sun' shine in! Never ever has a 'tube' aficionado (not that there's line in front of my house), questioned its sonic thumb print (mostly, quite the opposite). Also, other than Saturday visits at my 'favorite' HiFi shop (Offenes Ohr, Berlin) when in town, most of my second-hand-listening these years was with Pass' products.
Second hurdle is my ability to remember sounds. It is above-average and has yet always (informally) been underscored by 'better' ears than mine.
Third is that I've only logged in about four hours with my Ampino till now. This said:
On the Richter scale of "one to ten," I'd say the Ampino rates at least an 'eight' if not 'ten' on both accounts, sound staging and imaging! I would also classify it as laid back but, it creates a
presence that is, imo, beguiling without 'artificial' aftertaste.
I've recently auditioned the Crayon CFA-1 in my home and still think it may 'better' my Gryphon. In ten days I've scheduled another home audition, this one for the AtmaSphere M60III & M30III (Promitheus TVC & Tube step up - German High End XLR). My MWI Sony 9100ES SigTruth TubePS will have to suffice as source but I know it well (my TT still 'ups' my CDP). I mainly use Zu cables, btw.
What gets me excited (and one of the reasons for 'waiting' before bringing the Ampino back on line), is that the Ampino has me wondering whether it may actually do things 'equal' (if not even 'better'?!) to amps which not only cost a far sight more, but, imo, are in many disciplines still sota. Note: my TABU still reigns but inasmuch as I am aware how 'fast' one can adopt a new [good / adequate] 'sound', were it gone, I'd not 'miss' it like I do my '50s Raleigh alloy 10-speed, with all the Campagnello...

Cheers!
John
P.S.: For the life of me I really have no gut feeling as to 'how' or 'which' [amp] to liken the Ampino to. I like to think that I have a grip on 'integrateds' but -
no name-bashing intended or inferred!- whether NAIM, Brinkmann, Krell, micromega... I personally just don't know of one - sorry! Note: this is not to say that the Ampino is 'better', different tastes is one of the spices in life.