I saw the topic and decided to report my situation.
I purchased a pod go recently and I am quite bothered by this noise issue, which is quite evident in clean tones. it occurs after a few minutes in which the pod go is turned on, even without amp simulation on, the problem persists, and if you connect the guitar to the return of the fx loop, the problem does not occur and the tone is much better, things that I have never seen happen on the my pod hd500x, I use both on the same monitor. I believe that the pod go has a serious problem in the input circuit or else I was very unlucky.
