I don't think so. Reddit and Ampero forums I've seen have a TON of reports of the same. A lot of people thought it was just the headphone out, but I'm experiencing it through the other non-XLR output as well. Not the power in my house either. I've run FM9s, Helix, HX Stomp and Fender ToneMaster Pro all on the exact same outlet.....no noise.
How do you monitor your Ampero II?
I play. with my II Stage nightly using headphones. No noise. I've had it since it came out. Best of luck