Turning cab off?

I'm thinking about buying a poweramp to go with my kemper (rack non amp version).

I had a go at turning off the cabs on my Kemper to see how it works but the cab comes back on when I change to another profile.

Is there a way to turn the cabs off overall for when I'm using my Kemper just as a preamp and running it through a poweramp and real cab?

Aaaah yeah cool thanks.

Just realised you can control the cabs by the output menu so you can have one output through a real cab on stage and one to front of house.

Thanks for your help