Can 10 knob Bogner Shiva 6L6 head use KT66 power tubes?

[Wickedtone]

Hi! New member here. I recently purchased an earlier Bogner Shiva 6L6 head off of Reverb and was wondering if I could use KT66 tubes or only 6L6/5881 tubes? This is my first Bogner head. I have a Bogner OS 2x12 w/ Celestion V30 & Creamback 65 to pair the head with when I get it.

 

[panhead]

I would think so

 

[Wickedtone]

Cool. Thanks for the reply!