Nordicnorm - like you I had a Doge, inky black line stage, great dynamics and separation of players on the soundstage. What I couldn't appreciate was it seamed like the midrange was turned down as a tone control might do. Further in owning other preamps with the same tube types I wrote it off as a design flaw. I've since moved on to other 6sn7 based preamps. While none that I've tried had a recessed midrange, thay all seam to have more 'meat on the bones' that seams to be a characteristic of the 6sn7 family.
Was your experience similar when you moved to Don's preamp?
Was your experience similar when you moved to Don's preamp?