Hi all, I got experiance with gryphon and vitus but not exact models mentioned.
Own Vitus ri100 now for last 6 months and not looking to make any changes soon, convert from separates and was on quest for years to find Vitus, hands down. Previously own Gryphon Atilla which is pre version of diablo 120. I was impresed with gryphon slam and overall performace but noticed that preamp section was the wick link as I bypass it and only use its power aplification section with hegel P30 as preamp for some time. That combination was very good or sruning I should say but when i got my hands on rs100 (power amp) I was immediately taken on with realizm and smooth presentation, like best of two words ss and tubs. Then I managed to get hands on freshly serviced ri100 unit and I must tell I did not think I ever get rid of Hegel P30 but this integrated unit just blowed away any previous configuration. Soundstage, image, details, transaprency everything just got on to next level.