Although I really like most Nembrini amp simulations, this one leaves very mixed impressions to me.
On the one hand the Clean channel (including the Crunch voicing) sounds - as expected - excellent, unfortunately the Boost channel did not really convince me. Sounds like a Soldano, but – especially if compared to some other Soldano simualtions, I miss a lot of this typical midrange punch, while treble sounds much too sharp, too thin and shrill for my taste.
I tried a lot, reducing input and output level, only using Normal mode, but as soon as I adjust Treble and Presence to medium settings or higher, the tones get some – for my taste – much too intense, unharmonious sounding sharpness, but if Treble and Presence are reduced, the tones start sounding too dull and muddy.
Using a 412 with G12M speakers reduces the problem a little, but this cannot really be a convincing solution.
A Soldano has some treble bite, no doubt, but the one here sounds too harsh and unnatural to me, even more, as some more intense mids also seem to be missing.
A similar experience I also made with the Nembrini Sound Master Custom plugin. Fantastic sounding Clean channel, but unfortunately also a too sharp, too thin, too shrill sounding Overdrive channel.
A little bit disappointing, especially if compared with some other, really great sounding Nembrini amp simulations. So I think, the Boost channel really needs some upgrade, to sound convincing. Then this also could be fantastic sounding plugin. Until then I rather prefer using some other Nembrini amps.