Ah, yes, Kieran, that's Keith Wong, a very clever and discerning physician with a VERY expensive system I've heard; Acapellas, a very exotic plasma tweeter from Germany.
Keith heard the older, 2008 Soraya, not the latest. The later one does have some considerable refinement, largely due to a complete revision of the input stage.
Incidentally, it's tricky comparing tube amps with SS amps; they do so much differently. As a general rule, tube amps are highly musical, with wonderful image depth, but they often lack top end extension, usually lack deep bass and impact, and generally lack attack. Good ones are still VERY good, however, but there are strengths and weaknesses to both technologies. I try to combine the goods, dispel the bads.
Gaetan, thank you very much for the link; I went straight there, easy to identify Keith! He is a committed audiophile with more knowledge of classical music than anyone I have ever met, particularly opera.
Cheers,
Hugh