Hello. I have my Eden amp for a year now and i'm quite happy with it's sound and options. However, when I switch the amp on with nothing plugged in there is still some annoying noise when I increase the master level. It's not a bass problem, not a FX problem, not a wireless problem. It happens at every venue, so no house electricity problem at all. You can hear just the amp with the cabinet itself in the video down below. Have you got the same thing with yours? Any issue to fix that? Or is it normal which I don't think so. Thank you.