Butler TDB-2250 amps in mono mode

Has anyone heard the Butler TDB-2250 used as monoblocks? I don't think I need the extra power but was wondering if the sound would take on more tube sound in mono configuration. How if any, would the sound change ?

They would be driving Joseph's RM25xl speakers. I think they are rated 87db.
Preamp is a Shindo Aurieges.
What do you mean by a more tube sound and why do you think running the amp in mono would achieve this? Just curious.
Hello Tpreaves, My common sense idea without understanding the electronics involved was that you would possibly have two tubes instead of one in each output. Just kindly ignore that idea if its stupid. Mostly just wanting to know if running these amps in mono changed the sound and how.