Bypass preamp section on Unison Research Unico?

I recently ordered myself a Space Tech QA115 tube pre-amp and for the moment, I intend to use it with my Unico hybrid. Is there a way to bypass or disable the pre-amp section on the Unico?
Wliucm: Contact:

She should put you in touch with the right people.

I have met her several times and she is a pleasure to do
business with. I used to own the Unison Research Unico SE
tube hybrid integrated.

I have fond memories of it in my system.
Best of luck!