$2,500 Recommendations for Focal Aria 906

Hello all. I am currently running the Rogue Audio Sphinx V2 with my Focal Aria 906's and am looking to upgrade to something better in the $2,500 range. I've always been interested in tube amps so am considering the Rogue Cronus Magnum II. Any other recommendations that might pair well with the Focals?

Thanks!
Paul