Headphone Noise Issue After DSP Card Install

Hi everyone,

I just wanted to share that I’ve successfully installed the DSP card and I’m really enjoying experimenting with the FX. However, since installing it I’ve noticed an issue with the headphone output: there’s a constant, very audible noise that only disappears when I turn the headphone volume knob all the way up. The noise also changes slightly when I navigate through different menus. The other outputs are unaffected.

I’ve already reopened the unit and double-checked that all cables are connected securely. Has anyone else run into this or have suggestions on how to fix it?

Thanks!