I’m using a Jazzmaser plugged into my new Vox AC15 (15W). I noticed a buzzing sound coming from the amp when not touching any metal on my guitar. I identified it as a grounding issue, as the sound would almost completely disappear when i turned the power strip in my room off. A lot of people say the best solution is to try a friend’s house, but as i’ve already tried, i’m wondering if there’s any other known fixes for this problem. Thanks