you have a terrific amp in the h390... it is hard to beat, but a tubed pre + a ss or hybrid power amp will yield a slightly rounder, softer presentation but perhaps one with improved soundstaging
i think you have excellent amplifier candidates, in particular the hybrid bhk...
as for the tubed pre, i would suggest a conrad johnson et5 (used around $4k) or an audio research ref 3 (same price roughly, used)... otherwise consider a used herron, these imo are superior to the primaluna or rogue (and perhaps also the ps-a)
modwright tube linestages are also excellent, but their popular swl9.0 is in a lower class of sound and build quality than the c-j or arc (i have owned all of them) - their ls36.5 is more comparable
good luck have fun