Maybe Ray could chime in about this amp vs. the B52.
I also wonder if by any chance Ray offers any upgrades to the B52 (Ray never offers upgrades to his amps, as far as I know).
I love my B52 because it seems a very good match with my T1s, PS1000s, Edition 8s, , and if the recording is not too tipped up, the HD800s.
All of these can be too chilly or bright (each in their own way), and the B52 (with some Bendix 6900 and Telefunken 12AU7 tubes) makes them sound balanced and musical from top to bottom.
So is the new DarkStar "dark" sounding in a good way, as in warm and sonorous and natural but not covered up and still reasonably revealing, just not ruthlessly?
(That is how I feel about my still beloved B52 that I will never sell.)