High frequency noise

    I have a powered kemper. When I connect to the speaker output I get I high pitch ringing on any profile that uses high gain. I have checked all my outputs and settings, ground lift, changed cables. and nothing seems get rid of this noise. It’s only when I connect it to a cab when I use the the monitor out to my DAW no noise

    Is it like feedback ?

    Only when KPA and cab together, nothing else connected ?

    With or without guitar connected ?

    Any other electronic gadgets around like VGA screen,

    computer, dimmers, WIFI , refrigerator, cellphone,

    powerplant, railroad, TESLA charging station ??

    Just brainstorming here :/

    Or maybe it´s just the poweramp that´s on the fritz .... =O


    // H.

    The adjective for metal is metallic. But not so for iron ... which is ironic.

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