Hi Italo and thnx for your support!
Today i realize that the cause of noise was a bad cable!! lol … i'm feel so stupid… With right cable, sound it's INCREDIBLE.
I've just the last question: now, eventide it's connected to return's head with just one of two eclipse output… my question is: can i use the other eclipse output with a tuner (not pedal tuner like the B**S one, just a "discount" tuner [little box with stilo battery]), or i'll should demage something (x ex. amp or eclipse)?
Thnx again for your support!