Rogue amps have a house sound that skews more neutral and are not as tonally full or warm sounding as some other tube amps, so in addition to the Cronus maybe being a bit underpowered this may also be contributing to what you’re hearing. I had their hybrid Medusa power amp in my system for a bit, and it was very good but warm or tube like would not be words I’d use to describe its sound — more solid state neutral sounding with excellent imaging/soundstage, and I’d be a little concerned the Pharaoh may be a bit more of the same as your Cronus. I think you should give the Unison Unico hybrid amps a look as they skew a little warmer and have a tube input stage and MOSFET solid state output that may work well with your Maggies, and specifically the Due and 90 models should be enough to power your Maggies effectively. This dealer offers a return period and used to offer a 10% discount though not sure that’s still in effect (might have vanished with tariffs). I know someone recently bought the Unico 90 from The Music Room and got a 10% discount, and they also offer a return period so that’s another option. I also linked a recent review of the Unico 90 so you can get more of a feel for its sonic characteristics. Just another potential option to consider, and best of luck.
https://soundapproach.com/unison-research
https://twitteringmachines.com/review-unison-research-unico-90-integrated-amplifier/