Raven Nighthawk Mk 3.1 vs Cronus Magnum III

I owned the Nighthawk and Blackhawk.  These were with the now extinct Svetlana Winged C power tubes and NOS .Amperex / Mullard from the factory.  

I then moved on to a Rogue Cronus Magnum II.  

The Ravens sounded excellent, transparent and with a huge sound stage but ultimately they were not powerful enough for my room and speakers. I wanted more impact and scale.   

The Rogue sounded good out of the box but with a few 12AX7/ AU7 tube changes the sound became magical.  Best of both worlds- transparent refinement and 3D sound stage with near solid state power and scale.   

@sj00884 

hi sure.  tried lots of combinations of the best NOS available and the center preamp tube is most important but they all matter.  Amperex 12AU7 sounded best by a mile, off label made by Amerex are available at more reasonable prices.  

front 12AX7 I also liked Amperex but the stock JJs are a good substitute once well burned in (many weeks).

back row 12AU7 I settled on RCA 5814.