It´s possible play with 2 Kemper amps together with one Mesa Boogie 4x12 Cabinet?

Sure!

Connect guitar to KPA1

Connect Direct Out of KPA1 to Input of KPA2

Connect Monitor Out of KPA1 to AUX IN of KPA2.

Connect Amplifier Out of KPA2 to Mesa cabinet.

And, better to switch Fixed Latency on, since you're most probably going to use different rigs on the two machines.

An excellent suggestion!

Thanks... although I wonder how much "Monitor Out of KPA1 to AUX IN of KPA2" will be delayed?

What are you aiming for? 2 amps at once?

Quote from JH-2

Yes Ingolf, I want to play with 2 amps at once in one cabinet. Paults says this is possible.

Somebody here has 2 Kemper?

I have two but I never did this.

Quote from JH-2

Do you play with 2 amps? or Second Kemper is spare?

No I don't play with two amps. I have them in different places.

Quote from JH-2

You have good weapons .

You're so kind to test he Paults says works fine? If you do that its for me big favor before buying the second Kemper.

Thanks

I'm afraid this won't be possible for at least a week.

Both the RETURN and the ALTERNATIVE IN can also be used as auxiliary inputs. You could, for instance, use this feature to mix in music from your mp3 player and play along. You will find the corresponding mix controls in the Output/Master Section.

OP: i'm wondering - what is you plan with this setup? Will you blend two distorted amps? Or one clean and one distorted, etc etc.?

Yes You Can

When you change preset sound stops for a split second using this auxiliary setup!!!

Would anyone sustain a note over a rig change? FX spillover would still work on one if the KPAs.