Hello,
I do not know where you got your information about the dehavilland 845 amps being "apparently somewhat veiled".
I have heard them in several systems, and in no instance did they ever "veil" the music. They pleasantly resolved details in recordings that I didn't know where there!
I haven't heard the Carissa amps, so I can't comment on those, but I suggest that you take a good listen to the deHavillands.
I do not know where you got your information about the dehavilland 845 amps being "apparently somewhat veiled".
I have heard them in several systems, and in no instance did they ever "veil" the music. They pleasantly resolved details in recordings that I didn't know where there!
I haven't heard the Carissa amps, so I can't comment on those, but I suggest that you take a good listen to the deHavillands.