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guitar pedal

High pitch noise from guitar effect pedal board?

I'm getting a high pitch noise (attached) that has something to do with the pedals (also attached)
Noise only happens when going through .
No noise when plugging directly into mixer, or into Clarus, then Mixer.

Guitar --> pedals --> Acoustic Image Clarus --> A&H Mixer --> Peavey Power head

By the sound of the noise itself, can anyone identify what it is and best way to go about addressing it? Thanks!