What Audio Interface und what cable do you use?
Daddario Planet Waves cables
I meant XLR or TS?
Is there some switch for Line Level in your AI and did you activate it?
I think you should use Input 1 and on the back side switch to LO-Z.
And the signal is still clipping? If yes turn down the Kemper's Output until it doesn't clip anymore. Or enable the -12 dB within the Output Menu.
Did you try another cable? If you have one, try TRS instead of TS.
Hm...strange. Does the Stage have Ground Lift Buttons like the head?
Hm...the noise sounds like some interference coming from a mobile phone, the lights in your room, a wireless mouse/keyboard or maybe the socket. Try ruling out these things.
I had success on this with the following steps:
1. Test the mains outlet by plugging equipment in elsewhere and make sure no equipment connected together if plugged into seperate outlets or double/triple plugs. Or use a mains noise tester to see if issues in the house (for me my aircon created massive noise on the lines when on)
2. Use only a few very short leads you know work to rule out cabling
3. Try disconnecting all other connections (for me there was a ground loop from the connected SPDIF output)
4. Try the ground lift options in output settings to see if that helps or changes anything
