I had the Rogue Hera II preamplifier with two XA60.5 power amps, and could compare it to Audio Research Ref5SE and Coincident Statement Preamp, all on Luxman M800’s mono and some Vivid speakers. The Audio Research was a bit as « raw » compared to the Hera, so Rogue was a better choice than the more expensive highly rated AR.
But finally, The Coincident Statement Preamp had far more transparency and fluidity than the two others, there is no secret: no coupling caps, the use of high quality coupling transformers and transformers volume control, external power supply made with many MKP caps, and the 101D tube triode in middle , no other active part in the signal path, and a true balanced design . Add to this the direct sell of Coincident and you have probably the best money can buy for 5500$. The Cronus Magnum may be the weak link after that?...
Regards, Nicolas.