Digital Bogner amp?

I use the kemper for 3,5 year now, also for live gigs . But yesterday I dusted my Bogner Shiva 20th anniversary el34 amp of and took it to rehearsel with a new bluesband.
But it didn't sound the way I remembered, It sounded "Digital' to me, and my Bogner os212 cab sounded like I whas playing true a shoebox .. Am I turning mad or what? So after 3 years using the Kemper I come to the conclusion
That a kemper with a DXR10 sounds like a warm tube amp and a 'real tube amp sounds 'Digital" ?