Its occurring from power up, no matter what preset is loaded.

Immediately after software reset even. No matter if anything is connected or not. Its 24/7 crackling.

My guitar buddy has tried everything he can think off.

First left channel started crackling, then both channels after a period of 1 year. It's impossible to use it, with this noise ruining everything.

Isnt it rather easy to say what's causing this? Isnt this a common wear and tare with Eventide Orville over time?