Unpowered Kemper into a Bogner Spider Valve 112?

Just wondering if it would be possible to plug an unpowered Kemper into a Bogner Spider Valve 112 Combo to use it's power amp and speaker?

The inputs that seem relevant on the back are 'preamp out' and 'power amp in' but i'm not sure if that is just another way to describe an effects loop.

Could I just plus the kemper into the 'power amp in'?

Any feedback would be much appreciated!

Just found this as well: http://l6c.scdn.line6.net/data…ual%20(%20Rev%20A%20).pdf

If you look at page 9 I think it suggests that it should be possible. Would appreciate a more knowledgable opinion though!

Thanks Ingolf, appreciate the help!