Hello Flick,
Thank you for the support, now I had time to test, and I found a better sweetspot of the trimpot. So in higher volume the hiss will appears, but I am clipping at that point. With higher sustain the clipping is solvable, the hiss still exists in that point, in the chain and alone as well, but I don’t like that tone. So I found my setting on the pedal!
Thanks again!
Additional info, sorry I forgot is. The power supply is a Voodoo Lab X4.